Abstract
Violet Batissa (Batissa violacea) is an important economic organism on the west-south coast of Aceh, because it is relatively high consumed by the community. However, gold mining activities carried out around the watershed are estimated to pollute the river and cause B. violacea to also be affected. The purpose of this study was to determine the level of mercury (Hg) and Lead (Pb) contamination in clam meat in Teunom, Aceh Jaya Regency. The research was conducted from June to September 2021. Sampling of clam was done by purposive sampling method. Hg and Pb were analyzed in clam meat using the Atomic Absorption Spectrophotometer (AAS) method. The results of the analysis showed that the Hg content in clam meat was between 0.12-0.63 mg/kg (mean 0.35±0.26 mg/kg), water 0.0026-0.0103 mg/kg (mean 0.0052±0.004 mg/kg), and sediment 1.3224-3.8767 mg/kg (mean 2.2324±1.427 mg/kg). Furthermore, the results of the analysis showed that the Pb content in clam meat, water and sediment had the same value at 3 stations with values 0.0002±0 mg/kg, 0.0003±0 mg/kg, and 0.0002±0 mg/kg, respectively. The conclusion of this study is that the Hg content in water and sediment has exceeded the threshold, while the clam meat is still in good quality standards. The Pb content in clam meat, water and sediment were also in good quality standards. Based on our study, B. violacea is still safe for consumption, while the water has been polluted and is recommended not to be utilized for human consumption.Keywords:Heavy metalRiverWaterSedimentBatissa violacea
Highlights
Violet Batissa (Batissa violacea) is one of the important aquatic resources for human
The clam meat, sediment and water samples were brought to the Laboratory of the Research and Industrial Standardization Institute, Banda Aceh, Indonesia to analyze the content of heavy metals Hg and Pb using the Atomic Absorption Spectrophotometer (AAS) method
The results of the analysis showed the average value of heavy metal Hg in clam meat at St. 1 reached 0.63±0.49 mg/kg and has exceeded the tolerance threshold, followed by St. 3 and St. 2 with values of 0.3±0.17 mg/kg and 0.12±0.09 mg/kg, respectively
Summary
Violet Batissa (Batissa violacea) is one of the important aquatic resources for human. One of the broad distribution areas of B. violacea in Aceh Jaya is in Teunom District. Since decades ago, this district has been known for its clam production area, especially freshwater clams (B. violacea). The Banda Aceh – Meulaboh Aceh Barat route, precisely in the villages of Seunebok Padang, Batee Roo, and Aron - Tanoh Manyang dozens of traders selling clams of various sizes. The results of our survey on November 2, 2020 at the B. violacea sales center in Teunom District found that the average size of clams sold by traders were: large size with an average weight of 135.68 g, length 76.5 mm, 85.92 mm wide, and shell thickness 42.56 mm; medium size with an average weight of 52.38 g, length 59.79 mm, width 67.09 mm and shell thickness 35.0 mm; small size with an average weight of 10.98 g, length 35.7 mm, width 38.78 mm
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