Determination of Trace Elements in Marine Cetaceans by ICP-MS and Health Risk Assessment
DING Yu-long1, NING Xi1, 2, GUI Duan1, MO Hui3, LI Yu-sen1, WU Yu-ping1*
1. School of Marine Sciences, Sun Yat-sen University, Zhuhai 519082, China 2. School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China 3. South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
Abstract：The liver, kidney and muscle samples from seven cetaceans were digested by microwave digestion, and trace elements amounts of V, Cd, Cu, Zn, As, Cr, Ni, Mn, Se, Hg and Pb were determined by inductively coupled plasma mass spectrometry (ICP-MS), and the health risk assessment for Zn, Cu, Cd, Hg, Se in the liver was conducted. The results of international lobster hepatopancreas standard (TORT-2) showed acceptable agreement with the certified values, and the relative standard deviation (RSD) of eleven kinds of trace elements were less than 3.54%, showing that the method is suitable for the determination of trace elements in cetaceans. The experimental results indicated that different tissues and organs of the dolphins had different trace elements, presenting the tissue specificity. There is a certain inter-species difference among different dolphins about the bioaccumulation ability of the trace elements. The distribution of trace elements in whales presented a certain regularity: the contents of most elements in liver, kidney were much higher than the contents of muscle tissues, Cu, Mn, Hg, Se, and Zn exhibit the higher concentrations in liver, while Cd was mainly accumulated in kidney. And according to the health risk assessment in liver, the exceeding standardrate of selenium and copper in seven kinds of whales was 100%, suggesting that these whales were suffering the contamination of trace elements. The experimental results is instructive to the study of trace elements in cetaceans, while this is the first report for the concentrations in organs of Striped dolphin, Bottlenose dolphin, Fraser’s Dolphin and Risso’s dolphin in China, it may provide us valuable data for the conservation of cetaceans.
Key words：Pearl river estuary;Cetaceans;Inductively coupled plasma mass spectrometry;Microwave digestion;Trace elements
丁玉龙1，宁 曦1, 2，桂 端1，莫 辉3，李育森1，吴玉萍1* . ICP-MS法测定海洋鲸豚的微量元素及其健康风险评估 [J]. 光谱学与光谱分析, 2015, 35(09): 2407-2411.
DING Yu-long1, NING Xi1, 2, GUI Duan1, MO Hui3, LI Yu-sen1, WU Yu-ping1* . Determination of Trace Elements in Marine Cetaceans by ICP-MS and Health Risk Assessment . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2015, 35(09): 2407-2411.
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