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ABSTRAK


Pemakaian aditif minyak pelumas telah dimulai sejak permulaan abad ke-20. Aditif yang paling banyak digunakan saat mi adalah senyawa logam dialkil ditiofosfat dan diaril ditiofosfat, khususnya Seng dialkil ditiofosfat.

Penelitian ini mencoba mempelajari pembuatan salah satu jenis aditif Seng dialkil ditiofosfat, yaitu Seng dietil ditiofosfat. Pembuatan Seng dietil ditiofosfat dilakukan melalui 2 tahapan reaksi dengan menggunakan atmosfer nitrogen selama reaksi berlansung . Tahapan pertama melalui pembuatan asam dietil dtiofosfat yang berasal dari reaksi antara etanol dengan fosfor pentasulfida, kernudian pada tahapan kedua asam dietil ditiofosfat direaksikan dengan Zn asetat membentuk Seng dietil ditiofosfat. Variasi suhu reaksi yang dilakukan adalah 300C,400C, 500C, 600C, dan 700C. Dengan komposisi reaktan 25 mL etanol dan 2,8 g P2S5 serta 2 g Zn asetat, menghasilkan produk Seng dietil ditiofosfat ( hasil percobaan ) pada masing-masing suhu reaksi adalah 2,92 g; 3,73 g; 1,61 g; 0,98 g; dan 0,68 g. Berdasarkan perhitungan secara teoritis hasiJ yang di peroleh seharusnya adalah 5,49 g, sehingga produk optimum Seng dietil ditiofosfat adalah pada suhu 400C sebanyak 3,73 g dengan persen hasil 67,89 %.

Seng dietil ditiofosfat yang diperoleh dari penelitian ini mempunyai titik Ieleh antara 87,2 °C - 89,7oC. Hasil analisis Seng dietil ditiofosfat pada masing-masing suhu reaksi dengan spektrofotometer FT-JR menghasilkan pita-pita serapan yang mirip, dengan pita-pita serapan yang terletak pada bilangan geiombang antara 2981,42 Cm' s/d 539,97 Cm". Sementara analisis dengan spektrofotorneter GC-MS diperoleh pada spectrogram massanya informasi fragmen-fragmen ion antara m/z: 45 s/d m/z :186.

Abstrak :
Paduan aluminium telah banyak digunakan pada industri manufaktur otomotif karena memiliki berat yang ringan dan ketahanan korosi yang baik. Salah satu jenis paduan aluminium yang umum digunakan dalam dunia otomotif adalah paduan JIS AC2B atau AA 319 (Al-6,5Si-3Cu, wt. %) sebagai produk coran (casting), Komponen hasil proses pengecoran memerlukan tingkat kekerasan yang cukup tinggi agar proses permesinan dapat berjalan efisien, menjaga tingkat presisi produk, dan meningkatkan usia pakai (life cycle) dari komponen. Peningkatan sifat mekanik dari paduan ini dicapai melalui penambahan unsur paduan dan proses perlakuan panas. Penelitian ini dilakukan guna mempelajari respon dari paduan AA 319 as-cast terhadap proses pengerasan penuaan dengan penambahan unsur paduan Zn sebanyak 4 at.%. Pengujian vacuum porosity dan K-mould dilakukan untuk menganalisa kualitas produk cor yang dihasilkan, sedangkan pengujian tarik dan kekerasan dilakukan guna mengamati respon pengerasan dari paduan ini terhadap proses penuaan (ageing). Sementara itu, observasi struktur mikro dari material dilakukan dengan menggunakan mikroskop optik. Scanning Electron Microscope (SEM) yang dilengkapi dengan Energy Dispersive X-Ray Spectroscopy (EDXS), dan pemetaan X-Ray (X-ray Mapping). Analisa kuantitatif fraksi volume fasa interdendritik dan unsur paduan terlarut di dalam matriks dilakukan dengan metode Quantitative Stereology menggunakan perangkat lunak Soft Imaging Systems analySIS. Identifikasi presipitat dan analisa struktur nano dilakukan menggunakan Transmission Electron Microscope (TEM). Hasil penelitian menunjukkan bahwa penambahan 4 at. % Zn mampu meningkatkan respon paduan terhadap pengerasan penuaan. Hampir seluruh unsur Zn larut di dalam matriks dan memfasilitasi terjadinya pengerasan larutan padat (solid-solution strengthening). Penambahan Zn diidentifikasi mendorong perubahan morfologi fasa interdendritik melalui pembentukan tegangan permukaan, sehingga berpengaruh terhadap sifat mekanis paduan secara umum. Perilaku khusus dari Zn terkait segregasi di sekitar dinding fasa CuAl2, indikasi pembentukan struktur internal dari presipitat O', maupun indikasi pembentukan presipitat yang mengandung Zn turut memberikan kontribusi terhadap peningkatan respon pengerasan penuaan paduan ini.

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Kegunaan logam seng yang luas untuk kebutuhan industri maupun kebutuhan sehari-hari secara otomatis akan meningkatkan angka permintaan terhadap logam seng setiap tahunnya. Mengolah kembali logam seng dari dross seng merupakan salah satu cara agar cadangan mineral seng di bumi tidak habis. Salah satu metode yang dapat dilakukan untuk memperoleh kembali logam seng dari dross seng adalah dengan metode hidro-elektrometalurgi. Proses terdiri dari pemanggangan 700°C, pelindian H2SO4, dan elektrowinning. Penelitian ini meneliti pengaruh dari parameter-parameter pelindian dan elektrowinning pada proses perolehan kembali logam seng. Untuk karakterisasi sampel menggunakan XRD yang dilengkapi dengan perangkat lunak XRD Match!, AAS, dan EDS. Dari penelitian ini, parameter optimal terjadi pada konsentrasi pelindi 2 M H2SO4 dan suhu elektrowinning 25°C pada rapat arus 2000 A/m2. Parameter tersebut menghasilkan efisiensi arus sebesar 91.57% dan kemurnian logam seng sebesar 77.68%.

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Extensive usability of zinc metal for industry needs and daily needs will automatically increase demand for zinc metal annually. Recovery of zinc metal from zinc dross is one way for zinc mineral deposits in the earth is not exhausted. One method that can be done to recover zinc metal from zinc dross is hydroelectrometallurgy method. The pr°Cess consists of roasting 700°C, H2SO4 leaching, and electrowinning. This study investigated the effect of leaching and electrowinning parameters on recovery of zinc metal. For characterization of samples using XRD, that comes with XRD Match! software, AAS, and EDS. From this study, optimal parameters °Ccurred at 2 M H2SO4 leaching concentration and 25°C electrowinning temperature at 2000 A/m2 current density, each performed for 60 minutes. These parameters produced a current efficiency of 91.57% and a purity of 77.68% zinc metal.

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Telah dibuat lapisan tipis (thin film) Seng sulfida (ZnS) dan Seng sulfida-Mangan (ZnS:Mn) pada substrat kaca dengan laju deposisi yang berbeda dengan cara evaporasi termal dan co-evaporasi termal di dalam bejana vakum. Pengukuran terhadap karakteristik impedansi lapisan tipis ZnS dan ZnS:Mn dilakukan di luar vakum untuk frekuensi yang bervariasi antara ribuan hingga jutaan hertz dan laju deposisi yang berbeda dengan ketebalan yang tetap. Ternyata pada daerah frekuensi 1 KHz sampai dengan 10 KHz terjadi penurunan impedansi yang relatif tajam, namun laju penurunan tersebut mulai berkurang pada daerah frekuensi di atas 10 KHz hingga sedikit di bawah 1 MHz. Pada daerah frekuensi di atas 1 MHz bahkan terjadi kenaikan harga impedansi yang menunjukkan telah terjadi gejala relaksasi pada lapisan tipis ZnS dan ZnS:Mn yang diamati. Hasil lain yang diperoleh bahwa permitivitas relatif (K) yang terbentuk pada lapisan tipis tersebut meningkat pengaruhnya pada frekuensi di atas 10 KHz sehingga terlihat bahwa kapasitansi lapisan tipis yang diamati memiliki harga yang tidak konstan, Selain itu nilai kapasitansi dan resistansi lapisan tipis ZnS:Mn mengalami perubahan terhadap variasi kadar Mn dari lapisan tipis tersebut.

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Latar belakang : Infeksi STH masih merupakan masalah kesehatan di Indonesia. Infeksi STH dapat menyebabkan malnutrisi dan sebaliknya. Zinc merupakan salah satu mineral esensial yang konsentrasinya dapat berkurang pada infeksi STH. Belum diketahui pengaruh pengobatan antelmintik terhadap konsentrasi zinc dalam serum pada anak SD. Tujuan : Menganalisis pengaruh pengobatan infeksi soil-transmitted helminths terhadap konsentrasi zinc dalam serum pada anak usia sekolah dasar di Jakarta. Metodologi : Penelitian pre-eksperimental (one group pre and post study) dilakukan pada anak sekolah dasar kelas 3-5 di salah satu SDN di Jakarta Utara. Pemeriksaan FLOTAC dilakukan untuk menentukan infeksi dan intensitas STH, untuk konsentrasi zinc dalam serum dilakukan dengan pemeriksaan Atomic absorption spectrophotometer. Sampel tinja dan darah diambil dua kali yaitu sebelum dan tiga minggu sesudah pengobatan dengan albendazole 400mg selama tiga hari berturut-turut yang diberikan pada semua anak baik yang terinfeksi maupun yang tidak terinfeksi. Hasil : Dari total 115 anak (54,8% perempuan, usia 9-11 tahun) didapatkan sebanyak 63,4% positif terinfeksi STH dengan mayoritas pada anak usia 9 tahun. Status zinc normal (konsentrasi zinc dalam serum ≥ 10,7 μmol/L) sebesar 73,9%. Mayoritas anak berstatus gizi baik dan berhubungan bermakna dengan konsentrasi zinc dalam serum (p=0,011). Anak yang terinfeksi A.lumbricoides dan T.trichiura memiliki konsentrasi zinc dalam serum sebelum pengobatan yang lebih tinggi secara signifikan (p=0,028 dan p=0,014). Konsentrasi zinc dalam serum sebelum pengobatan berkorelasi negatif secara signifikan terhadap selisih konsentrasi zinc (p=0,000). Kesimpulan : Status gizi mempengaruhi konsentrasi zinc dalam serum sebelum pengobatan. Sebelum pengobatan, anak yang terinfeksi A.lumbricoides dan T.trichiura memiliki konsentrasi zinc yang lebih tinggi secara signifikan. Semakin tinggi konsentrasi zinc dalam serum sebelum pengobatan memiliki selisih konsentrasi zinc dalam serum yang semakin kecil. Setelah pengobatan, anak yang terinfeksi T.trichiura dan infeksi campur mengalami selisih konsentrasi zinc yang cukup besar secara signifikan. Diperlukan penelitian lebih lanjut dengan waktu pengawasan yang lebih lama, intensitas infeksi yang lebih berat dan kemungkinan faktor infeksi lain selain STH.

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Background: STH infection is still a health problem in Indonesia. STH infection can cause malnutrition dan vice versa. Zinc is one of essensial mineral that can be depleted in infection that caused by STH. Effect of antelminthic agent to zinc serum in primary school children is unknown. Objective: To analyze the effect of STH treatment to zinc serum concentration in primary school age children in Jakarta. Methodology: Pre-experimental study (one group pre and post study) was carried out on the basis of grade 3-5 school children in one primary school in North Jakarta. FLOTAC examination was conducted to determine the intensity of STH infections and Atomic absorption spectrophotometer was conducted to examine zinc serum concentration. Stool and blood samples were taken twice, before and three weeks after treatment with albendazole 400 mg for three consecutive days, given to all children either infected or uninfected. Results: 63,4% children were infected with STH. Normal zinc status (zinc serum ≥ 10,7 μmol/L) was mostly found (73,9%). Majority of children had good nutrition status and was significantly correlated with pre treatment zinc serum (p=0,011). Children who were infected with A.lumbricoides dan T.trichiura had significantly higher pre treatment zinc serum than uninfected (p=0,028 and p=0,014). Pre treatment zinc serum had significantly negative correlation with difference of zinc serum (p=0,000). Conclusions: Nutritional status was correlating with pre treatment zinc serum. Children who are infected by A.lumbricoides and T.trichiura has higher pre treatment zinc serum. Higher pre treatment zinc serum has smaller zinc difference. Children who are infected by T.trichiura dan mixed infection has significantly bigger difference of zinc serum. Further research is needed in different locations with a larger sample size, longer time observation, heavier intensity and other possibility such as co-infection with other microorganism.

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Ruang Lingkup dan Cara Penelitian: Prevalensi penyakit periodontal di Indonesia sangat tinggi. Cara penanggulangan penyakit ini yang umum dilakukan adalah ?flap operation? (FO). Penyembuhan FO membutuhkan waktu cukup lama. Beberapa peneliti menemukan berat penyakit periodontal erat kaitannya dengan produksi ?gingival crevicular fluid? (GCF), konsentrasi ?alkaline phosphatase? (ALP) dan protein dalam GCF. Mineral zinc (Zn) berperan dalam berbagai fungsi faali tubuh di antaranya mempercepat proses penyembuhan luka bakar dan bedah mayor. Tujuan penelitian ini untuk mengetahui manfaat suplementasi Zn per oral terhadap penyembuhan luka FO, dan apakah aktivitas ALP dapat digunakan sebagai parameternya. Sejumlah 23 subyek dibagi dalam 2 kelompok. Kelompok A (12 orang) memperoleh kapsul ZnSO4 220 mg dan kelompok B (11 orang) mendapat plasebo. Masing-masing 3x1 sehari selama 14 hari. FO dilakukan pada hari ke 5. Pada hari ke 5, 12, 19, 26 (F0, K1, K2, K3) dilakkan pemeriksaan klinik dan laboratorik. Data klinik yang diteliti adalah ?papillary bleeding index? (PBI), kedalaman poket, dan kegoyangan gigi. Pemeriksaan laboratorik meliputi konsentrasi Zn plasma; besar produksi, konsentrasi protein dan aktivitas ALP GCF. Status gizi para subyek juga diperiksa. Hasil dan kesimpulan : Status gizi subyek baik. Data PBI dan kegoyangan gigi kelompok A saat K2 menunjukkan kemaknaan penyembuhan klinik. Konsentrasi Zn menunjukkan kemaknaan penyembuhan klinik. Konsentrasi Zn plasma A selama penelitian (F0 149, K1 127, K2 117 ug/dl) walau tidak bermakna. Saat K1 produksi GCF B meningkat bermakna (p < 0,01) dan konsentrasi protein A menurun bermakna (p < 0,01). Didapatkan perbedaan bermakna (p < 0,01) dari konsentrasi protein A saat K1 dan K3 dibandingkan dengan B. Pemberian ZnSO4 per oral dapat mempercepat penyembuhan FO. Aktivitas ALP GCF tidak mempercepat penyembuhan FO. Aktivitas ALP GCF tidak dapat dinilai, sehingga penggunaan ALP GCF sebagai parameter penyembuhan tersebut belum dapat disimpulkan. ......Scope and Method of Study: the prevalence of periodontal disease in Indonesia is still high. Flap operation (FO) is the common therapy for this disease is closely related to the production of the gingival crevicular fluid (GCF), alkaline phosphatase (ALP) and protein levvel in GCF. Zinc (Zn) is a mineral with various physiological functions eg to accelerate the healing process of burns and wounds after surgery. The purpose of this study is to investigate the benefit of Zn given orally to wound healing after FO and whther the GCF ALP could be used as the parameter of the healing. The 23 subjects were devided into 2 groups. Group A (12 persons) received 220 mg ZnSO capsuls and group B (11 persons) received placebo 3 ti d for 14 days. FO was done on day 5 of the study. On day 5, 12, 19, 26 (FO, K1, K2, K#) the following were examiner: papillary bleeding index (PBI), pocket depth, looseness of the tooth, plasma Zn level, GCF production, protein level, ALP activity in GCF and the nutritional status was assessed. Findings and conclusions: all the subjects were in good nutritional status. PBI and the looseness of the tooth of group A on K2 showed significant clinical healing. Although not significantly different the plasma Zn level of group A (FO 208, K1 227, K2 209 ug/dl) was higher than group B (FO 149, K1 127, K2 117 ug/dl). The GCF production of group B on K1 was significantly increased (p <0,01) and GCF protein level of group A was significantly decreased (p < 0,01). The difference in protein level between group A and group B on K1 and K3 was significant (p<0,01). Thus ZnSO4 given orally accelerated the healing of the FO wound. The use of GCF ALP as a parameter for the healing of an FO wound could not yet be proven.

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Anemia is the main micronutrient deficiency problem among adolescent school girls in Indonesia. Anemia due to iron deficiency often coexists with zine deficiency. Iron and zinc have anlagonistic interaction. Therefore, it was appropriate ratio of iron-zinc supplementation. Objective The study was aimed to investigate the different ratios of iron-zinc supplementation Fe: Zn = 2: 1 and Fe: Zn = 4: 1 on improving the iron and zinc status and eventually reduction of the morbidity of anemic adolescent school girls compared to iron supplementation alone. Methodology A randomized, double blind community trial was conducted among anemic adolescent school girls (10-12 years old). Selection of subjects was conduted in two steps. Firstly, 238 girls (out of 1358 girls), with hemoglobin concentration level < 115 g/L using Hemocue were recruited and given antihelminthic drug (500 mg mebendazole as a single dose). Secondly, those who had hemoglobin concentration < 120 g/L using Cell Dyn from venous blood one week after deworming (n+133) were enrolled into the study. The 133 subjects were assigned randomly to one of the three groups for daily iron-zinc supplementation for 12 weeks with: Group 1 (n=45): iron (60 mg/day), Group 2 (n=45): iron and zinc (30 mg and 15 mg/day) or group 3 (n=43): iron and zinc (60 mg and 15 mg/day).Supplement intake was supervised at base line, weight and height were measured and the available iron and zinc intake from diet was estimated using a model modified from WHO/FAO and Murphy, based on the data 24-hour Food Recall and Food Frequency Questionnare. Iron (hemoglobin/Hb, serum ferritin/SF, serum transferrin receptor/TfR, zinc protoporphyrin/ZPP, Mean Corpuscular Volume/MCV, Red-cell Distribution Width/RDW, body iron/BI) and zinc (serum zinc/SZ) status and supplementation. Morbidity status of diarrhea and Acule Respiratory Infection (ARI) were recorded weekly. The phagocytes cell and Cell-Mediated Immunity were measured only for 50% of the subjects. Results and Discussion By the end of the supplementation, most indicators of iron status were increased significantly in all subjects both they took iron supplementation with or without zinc, and the proportion of iron deficiency anemia reduced. Iron supplementation alone or iron-zinc improved zinc status. The proportion of zinc deficiency was sinificantly reduced only among subjects who took iron-zinc supplementation with the ratio of Fe: Zn =2: 1. which was significantly lower compared to the other two groups at the end of supplementation. In iron/zinc 2 : 1 group, no subject had iron deficiency anemia and zinc deficiency after 12 weeks of supplementation, which suggested that iron-zinc supplementation with the ration of Fe: Zn = 2 : 1 had reduced both iron deficiency anemia and zinc deficiency. In this study, iron deficiency among anemic school girls was due to insufficiency of iron in red blood cell, and iron or iron-zinc supplementation for 12 weeks had less benefit to increase iron status. The possibility; of hemoglobinopathies such as thalassemia trait affecting adolescent girls in this study should be considered as several studies indicated that the prevalence of tlinlassemia trait among the same population in Indonesia is high. Iron deficiency also occurred at the storage level, which increased and reached the normal value with iron or iron-zinc supplementation. At the end of supplementation, the mean value of most indicators of iron status in all groups did not reach the normal value (such as Hb < 120 g/L, ZPP > 40 umol/mol heme, MCV <2 80 fL, RDW > l4%), perhaps the 12-weeks of iron supplementation was not long enough to fulfill iron for the 120 erythrocyte life cycle. lt seems, that the competition between iron and zinc occurred both at the storage level and the erythrocyte formation, and iron-zinc supplementation with the ratio of Fe: Zn = 2: 1 had minimal interaction as the improvement of both iron and zinc status was higher compared to the other groups. Most anemic adolescent school girls in this study had low available iron and zinc intake from the diet, with low intake of enhancers and high intake of inhibitors, which is not enough to promote either iron or zinc absorption from the supplements. The reduction of the proportion ol' subjects suffering from ARI was the highest among subjects who took either iron alone (3l.1% to 6.7%) compared to those who took iron- zinc supplement with ratio 2: 1 (1 7.3% to l1.l%) or iron-zinc supplement with ratio 4: 1(16.3 % to l4%), indicating that iron alone reduced morbidity status in tenn of Acute Respiratory Infection (ARI). However, adding zinc to iron supplements with ratio 2: 1 scents to improve the specific immune response of anemic adolescent school girls, as shown that the ratio of CD-4/CD-S was slightly increased among subjects who took iron-zinc supplement with the ratio of Fe: Zn= 2: 1. Conclusions and Recommendations lt was concluded, that both iron deficiency anemia (22%) and zinc deficiency (15.8%) were problems in the study area. Iron deficiency and hemoglobinopathies such as that assemia trait might be the causes of anemia among adolescent school girls. A daily 30 mg iron and 15 mg zinc supplementation among anemic adolescent schools girls for 12 weeks improved iron and zinc status and reduced iron deficiency anemia and zinc deficiency. Iron supplementation alone increased iron status, while adding zinc to iron supplementation protected the adverse effect of iron on decreasing zinc status. The competition between iron and zinc might occur in the role of both nutrients for erythrocytes formation as well-as at storage level, and supplementation with the ratio of Fe: Zn = 2: 1 had minimal interaction on improving bot.h iron and zinc status. As most of the anemic adolescent school girls had inadequate iron and zinc intake from the diet, the deficiencies of other micronutrients such as; vitamin A, folic acid and vitamin B12 should also be considered as the causes of anemia. Combined iron-zinc supplementation with the ratio of Fe: Zn = 2: 1 was appropriate on reducing the risk of anemic adolescent school girls suffering from Acute Respiratory Infection, however the mechanism of both iron and zinc on enhancing immune system could not clearly be shown from the results of this study. It is recommended to establish an iron-zinc supplementation program with ratio of 2: 1 through the existing channel of school health program to alleviate iron de iciency anemia and zinc deficiency 'among adolescent girls. Research cum action prioritized is to explain the contribution of bioavailability iron and zinc intake from the diet including increase the enhancers and minimize the inhibitors to the absorption of iron-zinc supplementation with ratio of Fe: Zn = 2: 1. The possibility of hemoglobinopathies such as thalassemia trait, as the cause of anemia needs further investigations.

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ABSTRAK
Penyakit diare merupakan salah satu penyebab utama morbiditas dan mortalitas pada anak balita di seluruh dunia. Kejadian diare masih menjadi fenomena yang perlu segera ditangani dan menjadi perhatian para penyedia layanan kesehatan dalam memberikan penanganan diare. Pemberian seng merupakan salah satu strategi pengendalian penyakit diare. Untuk mengurangi durasi dan prevalensi kasus diare berulang, diperlukan kepatuhan terhadap pengobatan seng. Tujuan penelitian ini adalah untuk mendeskripsikan kepatuhan minum zinc pada balita yang mengalami diare berulang. Metode penelitian ini menggunakan desain deskriptif. Sampel yang digunakan dalam penelitian ini berjumlah 112 responden. Teknik pengambilan sampel dalam penelitian ini menggunakan metode non-probability sampling melalui consecutive sampling. Hasil penelitian menunjukkan bahwa 61,6% responden menghabiskan seng dalam 10 hari. Kesimpulan penelitian ini menunjukkan bahwa kepatuhan minum seng dalam waktu 10 hari berasal dari 20,5% responden Jawa, 29,5% responden berpendidikan tinggi, 38,3% responden berpengetahuan, 30,3% responden ibu rumah tangga. tangga dan 32,1% responden berpenghasilan tinggi.

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ABSTRACT
Diarrheal disease is one of the main causes of morbidity and mortality in children under five worldwide. The incidence of diarrhea is still a phenomenon that needs to be addressed immediately and becomes the attention of health service providers in providing diarrhea management. Zinc administration is one of the strategies to control diarrheal disease. To reduce the duration and prevalence of recurrent diarrhea cases, adherence to zinc treatment is required. The purpose of this study was to describe the compliance with zinc drinking in toddlers who experience recurrent diarrhea. This research method uses a descriptive design. The sample used in this study amounted to 112 respondents. The sampling technique in this study used a non-probability sampling method through consecutive sampling. The results showed that 61.6% of respondents used up zinc within 10 days. The conclusion of this study showed that compliance with zinc drinking within 10 days came from 20.5% Javanese respondents, 29.5% highly educated respondents, 38.3% knowledgeable respondents, 30.3% housewives respondents. stairs and 32.1% of high income respondents.

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Latar Belakang: Sebanyak 149,2 juta anak di dunia mengalami kejadian stunting. Stunting adalah kondisi gagal tumbuh kembang anak yang diakibatkan oleh kurangnya gizi di seribu hari pertama anak. Berbagai penyebab mampu mempengaruhi kejadian stunting dan salah satunya adalah status gizi yang kurang. Zink yang termasuk dalam mikronutrien diyakini memiliki kaitan dengan kejadian stunting. Kadar zink yang rendah kerap kali dihubungkan dengan gagalnya pertumbuhan linear anak. Tujuan: Mengevaluasi perbedaan kadar zink pada saliva anak usia 6 – 8 tahun pada kelompok anak stunting dan non stunting dan mengevaluasi hubungan antara kadar zink pada saliva anak usia 6 – 8 tahun dan status stunting dan non stunting. Metode: Penelitian ini merupakan penelitian laboratorik dengan menggunakan 86 sampel saliva anak usia 6 – 8 tahun yang mengalami stunting dan non stunting di NTT. Sampel saliva subjek diuji dengan QuantichromTM Zinc Assay Kit dan dibaca menggunakan microplate reader pada panjang gelombang 425 nm. Selanjutnya, data diolah menggunakan SPSS. Hasil: Kadar zink pada saliva anak stunting usia 6 – 8 tahun di NTT sebesar 0,096 ppm dan pada saliva anak non stunting sebesar 0,105 ppm. Selanjutnya, didapatkan nilai korelasi r sebesar 0,657 dan p< 0,05 antara kadar zink pada saliva anak usia 6 – 8 tahun di NTT dan status stunting. Kesimpulan: Terdapat perbedaan bermakna antara kadar zink pada saliva anak usia 6 – 8 tahun pada kelompok anak stunting dan non stunting. Selain itu, terdapat korelasi antara kadar zink dan status stunting dan non stunting pada saliva anak usia 6 – 8 tahun. ......Background: As many as 149.2 million children worldwide experience stunting. Stunting is a condition of failure in child growth and development caused by a lack of nutrition in the child's first thousand days. Various causes can influence the incidence of stunting and one of them is poor nutritional status. Zinc, which is a micronutrient, is believed to have a connection with stunting. Low zinc levels are often associated with the failure of children's linear growth. Objectives: To evaluate differences in zinc levels in the saliva of children aged 6-8 years in the stunting and non-stunting groups and to evaluate the relationship between zinc levels in the saliva of children aged 6 – 8 years and stunting and non-stunting status. Methods: This study was a laboratory study using 86 saliva samples of children aged 6 – 8 years who were stunted and non-stunted in NTT. The subject's salivary samples were tested with the QuantichromTM Zinc Assay Kit and read using a microplate reader at a wavelength of 425 nm. Furthermore, the data is processed using SPSS. Results: The zinc level in the saliva of stunted children aged 6-8 years in NTT was 0.096 ppm and 0.105 ppm in the saliva of non-stunted children. Furthermore, a correlation value of 0.657 and p < 0.05 was obtained between zinc levels in the saliva of children aged 6-8 years in NTT and stunting status. Conclusion: There is a significant difference between zinc levels in the saliva of children aged 6-8 years in the stunting and non-stunting groups. In addition, there is a correlation between zinc levels and stunting and non-stunting status in the saliva of children aged 6-8 years