Wuxi Fisheries College, Nanjing Agricultural University, Wuxi, 214081, China.
Laboratory of Fishery Microchemistry, Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi, 214081, China.
Bull Environ Contam Toxicol. 2024 May 25;112(6):78. doi: 10.1007/s00128-024-03906-w.
Anodonta woodiana samples from Xidong Water Works and Mashan in Taihu Lake, Yiyang near Dongting Lake, and Taiping Harbor in Gehu Lake preserved in a "specimen bank" established for the "Freshwater Mussel Watch" monitoring program were used to determine the historical metal backgrounds from different waters in the present study. The elements Co, Ni, Mo, Cd, Al, Cr, Mn, Fe, Cu, Zn, As, Ba, and Pb were determined using A. woodiana from four lacustrine sites. The results showed that Al, Cr, Mn, Fe, Cu, Zn, As, Ba, and Pb were all detected, whereas Co, Ni, Mo, and Cd were below the detection limits of 0.0165, 0.0106, 0.0189 and 0.0182 µg kg, respectively. In particular, A. woodiana was noted to be an unusual Mn hyperaccumulator (ranged from 5124.09 to 13015.47 µg g). The results of discriminant analysis showed that the four water samples could be accurately separated. This difference has the potential to infer the background difference of heavy metal pollution in different lacustrine habitats.
取自东洞庭湖附近益阳市的洗洞水厂、太湖的马山以及隔湖的太平港的“淡水贻贝观察”监测项目“标本库”中的无齿蚌（Anodonta woodiana）样本，被用于确定本研究中来自不同水域的历史金属背景。利用来自四个湖泊地点的无齿蚌（Anodonta woodiana），确定了 Co、Ni、Mo、Cd、Al、Cr、Mn、Fe、Cu、Zn、As、Ba 和 Pb 等元素。结果表明，所有元素均被检测到，而 Co、Ni、Mo 和 Cd 的检出限分别为 0.0165、0.0106、0.0189 和 0.0182µg kg。特别是，无齿蚌（Anodonta woodiana）被认为是一种不寻常的 Mn 超富集物（范围为 5124.09 至 13015.47µg g）。判别分析的结果表明，这四个水样可以准确地分开。这种差异有可能推断出不同湖泊生境中重金属污染的背景差异。
