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Konsentrasi Logam Berat Timbal (Pb) dan Tembaga (Cu) pada Hasil Tangkapan Nelayan Pesisir Semarang dan Tegal Jawa Tengah
Summary
This study measured lead (Pb) and copper (Cu) concentrations in fish caught by coastal fishermen in Semarang and Tegal, Central Java, Indonesia. Heavy metals were detected in fish tissues, reflecting contamination in the coastal waters. Since microplastics can adsorb and concentrate heavy metals before being ingested by fish, they may amplify the metal burden in seafood consumed by local communities.
Coastal areas of Semarang and Tegal are the fishing ground area of traditional fishermen. But with the increasing activity in coastal and marine areas it will increase heavy metal contaminants in these waters which are allegedly contaminating existing biota. Heavy metals are pollutants that can accumulate in marine life. This study aims to know the concentration of lead metals (Pb) and copper (Cu) on the catch of the coastal fishermen of Semarang and Tegal, Central Java. Analysis of Pb and Cu concentration in tissue organisms using ICPMS. The results of the analysis showed that Pb and Cu metals were found in biota such as white shrimp (P. merguensis), crab (P. pelagicus), coocle (A. inaequivalvalvis) and gastropods (H. ternatanus). The highest concentration of Pb in the four biota captured in Semarang (4.48-5.76 ppm) and Tegal (0.53-3,055 ppm). Whereas the highest Cu metal in the biota argued in the Tegal waters (0.16 - 0.197ppm) while in Semarang (0.03-0.177 ppm) Semarang. The highest concentration of Pb (3,055-5.58 ppm) is found in gastropods both in Semarang and Tegal. Thus, the metal Cu (0.177-0.197 ppm) in gastropods from Tegal and Semarang. Gastropods accumulate the highest Pb and Cu metal in the two regions of the fishing ground. Pesisir Semarang dan Tegal merupakan daerah fishing ground nelayan tradisional. Namun dengan semakin meningkatnya aktifitas di wilayah pesisir dan laut tersebut akan meningkatkan kontaminan logam berat di perairan tersebut yang diduga akan mengkontaminasi biota yang ada. Logam berat merupakan polutan yang dapat terakumulasi dalam biota laut. Penelitian ini bertujuan untuk mengetahui konsentrasi logam Timbal (Pb) dan Tembaga (Cu) pada Hasil Tangkapan Nelayan Pesisir Semarang dan Tegal Jawa Tengah. Analisa konsentrasi Pb dan Cu dalam jaringan organisme menguunakan ICPMS. Hasil analisa menunjukkan logam Pb dan Cu ditemukan dalam biota seperti udang putih (P. Merguensis), rajungan (P. pelagicus), kerang bulu (A. inaequivalvis) dan gastropoda (H. ternatanus). Konsentrasi tertinggi Pb di keempat biota yang ditangkap di Semarang (4,48–5,76 ppm) dan Tegal (0,53– 3,055 ppm). Sedangkan logam Cu tertinggi pada biota yang ditangkap di perairan Tegal (0.16– 0.197ppm) sedangkan di Semarang (0.03–0.177 ppm) Semarang. Konsentrasi tertinggi Pb (3,055–5,58 ppm) terdapat dalam gastropoda baik di Semarang maupun Tegal. Demikian logam Cu tertingggi (0,177 - 0,197 ppm) pada gastropoda dari Tegal dan Semarang. Gastropoda mengakumulasi logam Pb dan Cu tertinggi di kedua daerah fishing ground tersebut.
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