Analisis Kandungan Merkuri (Hg) Pada Sedimen dan Ikan di Teluk Buyat

Eka Suci Rahmawati; Sri Seprianto Maddusa; Angela Fitriani Clementine Kalesaran

doi:10.31004/koloni.v5i3.1144

Authors

Eka Suci Rahmawati Universitas Sam Ratulangi
Sri Seprianto Maddusa Universitas Sam Ratulangi
Angela Fitriani Clementine Kalesaran Universitas Sam Ratulangi

DOI:

https://doi.org/10.31004/koloni.v5i3.1144

Keywords:

mercury (Hg), coastal ecosystem, sediment and fish, gold mining impact, Buyat Bay.

Abstract

Buyat Bay is a coastal water area in East Bolaang Mongondow Regency, North Sulawesi, located near gold mining activities. Mercury (Hg) is one of the heavy metals that can be present in sediments and marine biota through bioaccumulation and biomagnification processes. This study aims to analyze mercury (Hg) levels in sediments and fish in Buyat Bay. The method used was descriptive quantitative with field surveys and laboratory analysis using Inductively Coupled Plasma-Mass (ICP-MS). Sediment samples were taken from 16 coordinate points, while the fish samples consisted of four species commonly consumed by the public: uhi (Sphyraena barracuda), jambrung (Siganus javus), cockatoo (Scarus forsteni), and geloma (Johnius carouna). The results showed that five of the 16 sediment points exceeded the NOAA Effect Range Median (ERM) threshold of 0.71 µg/g, with the highest level at Point 4 at 10.0792 µg/g. Meanwhile, all fish samples showed mercury levels below the SNI 7387:2009 threshold of 0.5 µg/g, with the highest level in geloma fish at 0.2106 µg/g. In conclusion, five out of sixteen sediment sampling sites in Buyat Bay exhibited mercury concentrations exceeding the NOAA Effect Range Median (ERM) threshold, whereas mercury concentrations in uhi, jambrung, parrotfish (kakatua), and croaker (geloma) were below the maximum limit established by the Indonesian National Standard (SNI 7387:2009), indicating that they met the established maximum limit.

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