An Investigation of Toxic Metal Levels (Pb, Cd, Cr, As, Hg) in Dried Porphyra and Laminaria Collected from Coastal Cities, China

文献类型： 外文期刊

第一作者： Chen, Yan

作者： Chen, Yan;Wang, Fu-hua;Wen, Dian;Yang, Hui;Zhao, Xiao-li;Liu, Yong-tao;Wang, Fu-hua

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关键词： Porphyra; Laminaria; Seaweed; Toxic heavy metal; Provisional tolerable weekly intake; Risk assessment

期刊名称：BIOLOGICAL TRACE ELEMENT RESEARCH （ 影响因子：3.738； 五年影响因子：3.44 ）

ISSN： 0163-4984

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收录情况： SCI

摘要： This investigation was aimed at determining the concentration levels of five toxic heavy metals (lead, cadmium, chromium, arsenic, and mercury) in dried Porphyra and Laminaria samples from coastal city of China. Inductively coupled plasma-mass spectrometry (ICP-MS) was used for determination of lead, cadmium and total arsenic. Atomic fluorescence spectrometry was used for mercury, and liquid chromatography coupled with ICP-MS was used for arsenic speciation. The mean concentrations of lead, cadmium, chromium, total arsenic, and mercury were 0.96 +/- 0.03 mg/kg, 2.62 +/- 0.07 mg/kg, 1.64 +/- 0.08 mg/kg, 36.67 +/- 0.53 mg/kg, and 7.56 +/- 0.42 mu g/kg for Porphyra samples and 0.61 +/- 0.03 mg/kg, 0.48 +/- 0.02 mg/kg, 3.78 +/- 0.56 mg/kg, 43.85 +/- 1.42 mg/kg, and 46.61 +/- 2.02 mu g/kg for Laminaria samples. The results were comparable with previous similar research. The potential health risk assessment was conducted by comparing the calculated weekly intakes of toxic metals from Porphyra and Laminaria with provisional tolerable weekly intake. Consumption of these seaweeds does not seem to pose a risk for the consumers' health regarding their content of heavy metals. However, the potential health risk of cadmium should not be overlooked for consumers with high intake of Porphyra.

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