THE ANALYSIS OF MERCURY (HG) POLLUTION IN WATER, SEDIMENTS, AND SHRIMP AT BENDUNG LAMBUNU RIVER DUE TO CONVENTIONAL GOLD MINING ACTIVITIES IN PARIGI MOUTONG

Dirahayu Astuti, Fitryane Lihawa, Marike Mahmud

Abstract


This study aims to investigate mercury (Hg) pollution in water, sediments, and shrimp at Bendung Lambunu River due to conventional gold mining activities in Parigi Moutong. The study was held for four months starting from October 2019-January 2020. The study used a laboratory-based analytic-observational method with an observation of mercury (Hg) levels in the water, sediments, and shrimp at Bendung Lambunu River using ASS (Atomic Absorption Spectrophotometer) and Mercury Analyzer. The study indicates that there is no mercury in the water sample. Contrastively, the laboratory study of sediments from Bendung Lambuni River identifies mercury. The highest mercury level on the first, second, and third day that is 0.04959 mg/Kg (lower reaches), 0.05998 mɡ/Kɡ (mid-river), and 0.06705 mg/Kg (lower reaches) respectively have been categorized as hazardous as the levels have exceeded the quality standard that is 0.01 mg/Kg. Besides, the study of shrimp from Bendung Lambuni River at Laboratorium Kesehatan identifies mercury. The highest mercury (Hg) level on the first, second, and third day is 0.000128 mg/Kg (upper reaches), 0.000173 mg/Kg (lower reaches), and 0.000113 mg/Kg (lower reaches).

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