การปนเปื้อนและการเพิ่มกำลังทางชีวภาพของบิสฟินอลเอ (Bisphenol A) ในหอยแมลงภู่ที่เพาะเลี้ยง บริเวณอ่าวตากวน นิคมอุตสาหกรรมมาบตาพุด จังหวัดระยอง
Contamination and biomagnification of bisphenoa a in cultured green mussel (Perna viridis) in Takuan Bay, Map Ta Phut Industrial Estate, Rayong Province
Abstract:
This research focused on the distribution and biomagnification of Bisphenol A (BPA) in marine ecosystems at the Chakmak River mouth and Takuan Bay, Map Ta Phut Industrial Estate, Rayong Province. BPA concentrations were measured in seawater, sediments, and mussels, ranging from 50-1060 ng/L, 33-240 ng/g, and 384-513 ng/g, respectively. These levels indicate that BPA in seawater could potentially impact aquatic organisms at concentrations below 1.5 µg/L. A distinct contamination pattern was observed, with BPA levels in seawater and sediments decreasing with increasing distance from the Chak Mak canal. Stable isotopes of carbon (δ13C) and nitrogen (δ15N) were utilized to estimate the trophic positions of organisms within the food web. The δ13C values ranged from -22.08 to -16.18‰, and δ15N values ranged from 6.48 to 12.06‰ in aquatic biota and environmental samples. The lowest δ13C value was found in particulate organic matter (-22.08±2.28‰), while the highest was in mussels (-16.18±0.24‰). For δ15N, the lowest values were in sediments (6.48±1.59‰), and the highest was in mussels (12.06±0.52‰). The trophic structure of Takuan Bays marine ecosystem was categorized into three levels: producers (phytoplankton), primary consumers (zooplankton and mussels), and secondary consumers (mussels). Furthermore, BPA was found to increase in bioavailability as it moved up the food chain in the Takuan Bay area. This study underscores the critical need for continuous monitoring of BPA contamination in marine ecosystems to understand its ecological impacts better.