Hasil Pencarian  ::  Simpan CSV :: Kembali

"This title discusses various effects of heavy metal exposure to legumes as well as the bioremediation potential of rhizosphere microbes. Availability of heavy metals, their uptake and the effects of metals on various signaling pathways within legumes are presented. Furthermore, the effects of heavy metals to nitrogen fixing microorganisms and how microsymbionts can overcome metal stress is presented in detail. The role of nitrogen fixers in decontamination of heavy metal toxicity, mycoremediation of metal contaminated soils, microbially mediated transformation of heavy metals and action of plant growth promoting rhizobacteria and nitrogen fixers together in detoxifying heavy metals are broadly explained."

"Pengamatan kandungan logam berat Pb, Cd, Cu, Zn dan Ni di perairan muara Sungai Membramo Papua telah dilakukan pada bulan Agustus 2003. Hasilnya menunjukkan kandungan Pb, Cd, Cu, Zn, dan Ni masih sesuai dengan Nilai Ambang Batas yang ditetapkan oleh Kementerian KLH 1988 untuk kepentingan perikanan. Secara keseluruhan dalam air laut kadar Zn lebih tinggi dibandingkan dengan logam yang lain, sedangkan dalam sedimen kadar Ni lebih tinggi. Data ini menunjukkan bahwa pada saat pengamatan perairan muara Sungai Membramo lebih banyak menerima masukan limbah yang mengandung Zn dan Ni.

---

Heavy Metals Content Pb, Cd, Cu, Zn And Ni In Sea Water And Sediment In Membramo Estuary And Its Relationship With Fishery Cultivation. Obervation on heavy metals Pb, Cd, Cu, Zn and Ni content in Jakarta Bay were carried out in August 2003. The results showed that the Pb, Cd, Cu, Zn, and Ni content still in line with threshold value stated by for fisheries. By the all, in sea water Zn content is higher compared to the others, while in sediment Ni is higher. This data showed the result show that on waters of Membramo River Zn and Ni waste than others elements."

"Pengamatan kadar logam berat dalam air laut di Teluk Jakarta telah dilakukan pada bulan Mei 2004. Logam berat yang diteliti adalah Hg, Pb, Cd, Cu, dan Ni. Pengamatan ini ada kaitannya dengan kematian massal ikan-ikan yang terjadi di Teluk Jakarta. Pengamatan ini dilakuan di pantai Ancol 1 (3 stasiun), muara Sungai Dadap (4 Stasiun), pantai Ancol 2 (4 stasiun) dan Cilincing (3 stasiun). Hasilnya menunjukkan kadar Hg, Cd dan Cu rerata di pantai Ancol 1 berturut-turut adalah <0.001 ppm, Pb 0.001 ppm, Zn 0.004 ppm, dan Ni 0.001 ppm. Di pantai Ancol 2 kadar Hg, Cd, dan Zn rerata berturut-turut adalah <0.001 ppm, Pb 0.002 ppm, dan Cu 0.001 ppm dan Ni 0.0017 ppm. Di Cilincing kadar Hg, Cd, dan Zn rerata adalah <0.001ppm, Pb dan Cu masing-masing 0.002 ppm, dan Ni 0.0045 ppm Di muara Sungai Dadap kadar Hg dan Cd masing-masing adalah 0.001 ppm, Pb dan Zn masing-masing adalah 0.0027 ppm, Cu 0.001 ppm, dan Ni 0.0012 ppm. Di pantai Ancol 3 kadar Hg rerata adalah 0.021 ppm, Pb 0.55 ppm dan Cd 0.1 ppm. Kadar keenam logam berat tersebut di pantai Ancol 1, 2, Cilincing, dan muara Sungai Dadap relatif lebih rendah dibandingkan dengan NAB yang ditetapkan oleh Kantor MNLH (2004) untuk biota laut yakni 0.001 ppm untuk Hg dan Cd, 0.008 ppm untuk Pb dan Cu, dan 0.05 ppm untuk Zn dan Ni, sedangkan di pantai Ancol 3 kadar Hg, Pb, dan Cd lebih tinggi dibandingkan dengan NAB tersebut. Dengan demikian kadar Hg, Pb, Cd, Cu, Zn, dan Ni di perairan pantai Ancol 1, 2, Cilincing dan muara Sungai Dadap belum berbahaya bagi kehidupan ikan-ikan di Teluk Jakarta, sedangkan di perairan Ancol 3 kadar Hg, Pb, dan Cd sudah berbahaya bagi kehidupan biota laut. Namun demikian kematian massal ikan-ikan di perairan ini bukan disebabkan oleh logam berat tersebut, akan tetapi oleh faktor lain yang salah satunya adalah ledakan mendadak fitoplankton beracun yang mengeluarkan toksin dimana air laut menjadi berwarna merah dan kejadian ini dikenal dengan pasang merah (red tide).

---

Effect of Heavy Metals Pollution to Seawater Quality and Fishery Resources (Case Study on Fish Death in Jakarta Bay). Observation on heavy metals content in sea water were carried out in Jakarta Bay waters in May 2004. Heavy metals observed were Hg, Pb, Cd, Cu, Zn and Ni. This observation is conducted with fishes total death in this waters. Observation is done in Ancol beach 1 (3 stations), Ancol beach 2 (4 stations), Cilincing (3 stations), and Dadap River estuary (4 Station). The results showed that the average concentration of Hg, Cd and Cu in Ancol beach 1 were <0.001 ppm respectively, Pb is 0.001 ppm, Zn is 0.004 ppm, and Ni is 0.001 ppm. In Ancol beach 2 the average concentration of Hg, Cd, and Zn were <0.001 ppm, Pb is 0.002 ppm, Cu is 0.001 ppm and Ni 0.0017 ppm. In Cilincing the average concentration of Hg, Cd, and Zn were <0.001 ppm respectively, Pb and Cu were 0.002 ppm, and Ni was 0.0045 ppm. In Dadap River Estuary the average concentration of Hg and Cd were 0.001 ppm, Pb and Zn were 0.0027 ppm, Cu was 0.001 ppm, and Ni between 0.0012 ppm. The concentration of that sixth heavy metals in Ancol beach 1, 2, Cilincing, and Dadap River estuary still lower compared to the Threshold Value (TV) stated by The Office of State Ministry for Life Environment (2004) for sea biota namely 0.001 ppm for Hg and Cd, 0.008 ppm for Pb and Cd, 0.05 ppm for Zn and Ni. That way the concentration of Hg, Pb, Cd, Cu, Zn, and Ni in Ancol beach 1, 2, Clilincing and Dadap estuary not danger for sea biota, while in Ancol beach 3, the average concentration of Hg, Pb, and Cd has danger for sea biota. Thereby total death of fishes in this waters not caused by heavy metals, but by others factors, one of that factors is blooming toxic phytoplankton which produced toxin where sea water change to be red, and this phenomena known as red tide."

"

---

ABSTRACTHeavy metals can be emitted into environment by both natural and anthropogenic sources, mainly mining and industrial activity. Human exposure occurs through all environmental media. Infants are more susceptible to the adverse effects of exposure. Increasing attention is now being paid to the mental development of children exposed to heavy metals. The purpose of this book is to evaluate the existing knowledge on intellectual impairment in children exposed to heavy metals in their living environment and to identify the research needs in order to obtain a clearer picture of the situation in countries and regions at risk, in which the economy is closely related to metallurgy and heavy metals emission, and to recommend a strategy for human protection. In greater detail the main objectives could be formulated as follows: to review the principal sources of single, and complex mixtures of, heavy metal pollutants in the environment; to identify suitable methodology for chemical analyses in the environment and in humans; to evaluate the existing methods for measuring mental impairment, including their reliability and validity; to recommend a standard testing protocol to be used in future research; to assess the future role of environmental heavy metal pollution in countries and regions at risk and its effects on children's neurological development; to recommend a prevention strategy for protecting children's health and development. "

"Latar Belakang :Pekerja sektor informal tepi jalan merupakan salah satu kelompok pekerja yang perlu mendapat perhatian dikarenakan jumlahnya yang terus berkembang dan risiko penyakit akibat kerja yang cukup besar. Hasil studi pendahuluan menunjukkan terdapat 46,7 pekerja sektor informal pengecat mobil tepi jalan mengalami gangguan fungsi paru. Tujuan penelitian ini adalah untuk mengetahui hubungan antara pajanan logam berat dengan kejadian Penyakit Paru Obstruktif Kronis PPOK pada pekerja informal tepi jalan wilayah DKI Jakarta.Metode :Desain yang digunakan adalah cross sectional, dengan jumlah sampel sebanyak 90 data sekunder pekerja sektor informal tepi jalan. Variabel bebas dalam penelitian ini adalah karakteristik pekerja, karakteristik pekerjaan, dan kadar logam berat dalam darah. Analisis dilakukan secara univariat, bivariat dan multivariate serta dengan menghitung nilai rasio prevalensi.Hasil :Hasil penelitian menunjukkan bahwa prevalensi pekerja yang mengalami PPOK sebesar 11,1 , terdapat 3 variabel yang berhubungan secara signifikan dengan PPOK, yaitu usia diatas 42 tahun OR = 12,0; 95 CI = 2,351-61,249 , perokok sedang berat OR = 8,308; 95 CI =1,646-41,920 , dan masa kerja ge;13 tahun OR = 12,84; 95 CI = 2,509-65,729 . Berdasarkan temuan prevalensi yang tinggi pada pekerja dengan PPOK maka disarankan kepada dinas tenaga kerja dan dinas kesehatan untuk melakukan upaya promotif serta preventif agar pekerja sektor informal tepi jalan dapat terjaga kesehatan dan keselamatan kerjanya.

---

Background Roadside informal workers is groups of workers that needs attention because of the growing number and the risk of major work related desease.The preliminary study showed that 46,7 of roadside car painting workers experienced lungfunction disorder. The aim of the study is to know the association between heavy metal exposure with the incidence of Chronic Obstructive Pulmonary Disease COPD on roadside informal workers in Jakarta.Method The design used is cross sectional. Ninety secondary data of roadside informal workers were studied. The independent variables in this research are workers characteristic, job characteristic, and levels of heavy metals in the blood. Univariate, bivariate, and multivariate analysis were performed and prevalence ratios were calculated.Result The results showed that the prevalence of workers who had COPD 11.1 . Three variables have significant association with COPD, those are age over 42 years OR 12.0, 95 CI 2,351 61,249 , heavy smokers OR 23.5 95 CI 0.024 8,607 and working time ge 13 years OR 12,84, 95 CI 2,509 65,729. Based on finding of high workers prevalence that have COPD 11,1 therefore suggested work laborer department and health department to increase the promotif and preventif effort, in order that the savety and the health status of roadside informal workers will be aware."

"Metals accumulation in sediments from both natural and anthropogenic sources occurs in the same way, making it difficult to identify and determine the origin of heavy metals present in the sediments. Moreover, the total concentration of metals often does not accurately represent their characteristics and toxicity. In order to overcome the mentioned obstacles, it is necessary to evaluate the individual fractions of the metals to fully understand their actual and potential environmental effects. Single extraction is thus used generally to provide a rapid evaluation of the exchangeable metal fraction in sediments. However, complicated sequential extraction procedures are used to provide more detailed information regarding different metal phase associations."

"Untuk meneliti kandungan Pb dalam tanaman kangkung telah dilakukan penelitian menggunakan kangkung darat (Ipomoea reptans) yang ditanam pada media hidroponik, dan disiram dengan Multigrow Complete Plant Food (2000 mg/L) larutan Pb (2 mg/L) dua kali sehari. Sampel kangkung diambil berdasarkan umur tanaman (3 dan 6 minggu), dan bagian tanaman (akar dan seluruh bagian tanaman tanpa akar). Digunakan Inductively Coupled Plasma Spectrometer (ICPS) Fison 3410+ untuk mengukur kandungan Pb dalam sampel. Dari penelitian ini diperoleh hasil bahwa dalam tanaman akumulasi Pb terutama terdapat di akar.Pada tanaman kangkung yang berumur 6 minggu Pb terdapat dalam akar sebanyak 3.36 mg/kg sampel dan di bagian lain dari tanaman terdapat kandungan Pb sebesar 2.09 mg/kg sampel, dimana jumlah ini melampaui jumlah maksimum yang diperolehkan untuk dikonsumsi yang ditetapkan oleh Badan Pengawasan Obat dan Makanan (maximum dietary allowance) yaitu 2 mg/kg; sedangkan pada tanaman yang berumur 3 minggu kandungan Pb nya dalam akar adalah 1.86 mg/kg sampel dalam bagian lain dari tanaman sebesar 1.13 mg/kg dan tidak melampaui batas yang ditetapkan oleh BPOM. Karena itu dianjurkan untuk memanen kangkung pada umur tidak lebih dari 3 minggu.

---

Study on Pb Content in 3 Week and 6 Week Old Kangkung (Ipomoea reptans Poir) Planted in Pb containing Media. A study on the content of Pb in kangkung has been conducted. Land kangkung (Ipomoea reptans) was used as the sample, and was planted in hydrophonic media, and watered with Multigrow Complete Plant Food (2000 mg/L) and Pb solution (2 mg/L) twice a day. Samples were taken based on the age (3 and 6 week old), and part of the plant (root and all parts without root). Inductively Coupled Plasma Spectrometer (ICPS) Fison 3410+ was used to measure the Pb content. It was shown that in the plant the accumulation was mostly happened in the root. The 6 week-old plant contained Pb not just in the root (3.36 mg/kg sample) but also in the other part of the plant (2.09 mg/kg sample) and those were exceeded the maximum dietary allowance (2 mg/kg sample) regulated by the Indonesian FDA; while in the 3 week-old plant the Pb content in the root was 1.86 mg/kg sample and in the other part of the plan was 1.13 mg/kg, which is not exceeded the dietary allowance. So it is advisable to harvest the kangkung vegetable at the most of 3 week-old."

"The partial toxicity test of copper (Cu2+),zinc (Zn2+) and cyanide (CN-) for young cobia (Rachycentron canadum) fishes 45 days-ld were conducted in Doson station during ten days (Yr 2005)...."

"A survey on heavy metal content in seawater and sediment was conducted in Jakarta bay in May and October 2004.There is indication of significant presence of heavy metal in sediment...."