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Pajanan Hg pada Petambang Emas Tradisional Di Kabupaten Gunung Mas, Kalimantan Tengah
Increasing traditional gold mining activities can cause environmental pollution and affected the public health. So that, the study was needed in order to assess the determinants that influenced Hg exposure biomarker of population working in or living near gold mining and processing in Gunung MasDistrict, Central Kalimantan. Subjects in cross sectional study were 112 traditional miners and 112 livingnear gold mining and processing. The content of mercury in ambient, water and fish were measured; and the subjects were interviewed by using questionaires. Subjects completed the questionaire and provided urinary, hair and blood samples. Detection of mercury using Atomic Absorption Spectrophotometer (AAS) and cold vapour method was conducted at Ecology Health Research Center Laboratory. The result showed that; the mean concentration of ambient mercury was 0.072 + 0,0198 mg/m3 in mining area and 0.0369 +0,0092 mg/m3 in outside of mining area respectively. The highest mean level of mercury in fish 0.3167 ppm from market in Kurun District. Intake of inhalation mercury 0.02285 mg/kg, day for miners and 0.01406 mg/kg, day for non-miner living near the mining and processing. Mean of urinary mercury was 0.0547 ppm, mean of mercury in hair was 22.1134 ppm, and mean of mercury in blood was 0.0267 ppm. Over all, regression analysis showed a significant association. Log (Urinary Hg) = -3,507 + 379,745 (intake Hg inhalation) -0.170 (living) with 85,3% predicted (Hair mercury) = 2.013 + 0.007 (living time) + 0.642 (intake Hg inhalation) + 0.102 log (intake Hg from fish) - 558 (job) with r = 0.890. Blood mercury = -1.627 + 9.046 (intake Hg inhalation) - 0.141 (job) with r = 0.404. Intake of Hg inhalation was highly influenced by Hg exposure biomarker.
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