Micro-pollutant Research Centre (MPRC), Cluster of Water and Environmental Engineering, Civil Engineering Department, Faculty of Civil Engineering & Built Environment, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, Batu Pahat, Johor, Malaysia.
Institute of Ocean and Earth Sciences (IOES), University of Malaya, 50603 Kuala Lumpur. Malaysia.
Mar Pollut Bull. 2020 May;154:111115. doi: 10.1016/j.marpolbul.2020.111115. Epub 2020 Apr 1.
The current study aimed to develop a suitable molecular marker [Linear alkylbenzenes (LABs)] approach for pollution determination in mangrove oysters of peninsular Malaysia. C. belcheri species were collected from rivers of Merbok, Perai, Klang, Muar and PulauMerambong (An Island). The LABs were extracted from C. belcheri and determined using GC-MS. The LABs indices which included I/E, L/S and C13/C12 were applied to describe the sources and biodegradation of LABs. The results revealed that the maximum concentrations were detected in oysters from Klang (27.91 ng gdw), while the lowest concentrations were detected in oysters from Merbok (8.12 ng gdw). Moreover, I/E ratios varied between 2.83 and 6.40, indicating the secondary treatment effluents being discharged to coastal zones. The results of this study suggested that the oysters absorbed LABs mainly in dissolved phase. Therefore, mangrove oysters are a good biosensor for LABs contamination in the aquatic environment.
本研究旨在开发一种适用于马来西亚半岛红树林牡蛎污染测定的分子标记[直链烷基苯（LABs）]方法。从 Merbok、Perai、Klang、Muar 和 Pulau Merambong（一个岛屿）的河流中采集了 C. belcheri 物种。从 C. belcheri 中提取 LABs 并使用 GC-MS 进行测定。应用 LABs 指数，包括 I/E、L/S 和 C13/C12，来描述 LABs 的来源和生物降解。结果表明，Klang 牡蛎中的浓度最高（27.91 ng gdw），而 Merbok 牡蛎中的浓度最低（8.12 ng gdw）。此外，I/E 比值在 2.83 至 6.40 之间变化，表明二级处理废水被排放到沿海地区。本研究结果表明，牡蛎主要吸收溶解相中的 LABs。因此，红树林牡蛎是水生环境中 LABs 污染的良好生物传感器。
