| 杜冰,孙鲁闽,郝文博,梁晓萍,罗霞,薛骋.台海浅滩渔场不同水产品中重金属含量与暴露风险评价[J].农业环境科学学报,2016,35(11):2049-2058. |
| 台海浅滩渔场不同水产品中重金属含量与暴露风险评价 |
| Concentration and risk assessment of heavy metals in aquatic products collected from Taiwan shallow fishery |
| 投稿时间：2016-05-09 |
| DOI：10.11654/jaes.2016-0634 |
| 中文关键词: 水产品，重金属，风险评估 |
| 英文关键词: aquatic product, heavy metal, risk assessment |
| 基金项目:国家自然科学基金项目(41406120)；福建省自然科学基金项目(2015J05032) |
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| 中文摘要: |
| 为考察台海浅滩渔场水产品中重金属含量，采用电感耦合等离子体质谱(ICP-MS)和原子荧光光谱仪(AFS)分析了台湾浅滩渔场采集的59种[共165尾(只)]典型水产品样品中Hg、Cr、Cu、Zn、Cd与Pb 6种重金属的含量，并使用单因子污染指数(Pi)、重金属污染指数(MPI)、每周可耐受摄入量(PTWI)以及食入健康风险指标(Ri总)分别评估其污染程度、食用安全性与健康风险。浓度结果表明，除Cd(超标率10.4%)外，绝大多数捕捞水产品中各项重金属含量均达到无公害水产品的国家标准(GB 18406.4-2001)。Pi结果表明：有17.9%的样品中Cr、1.8%的样品中Cu和3.7%的样品中Zn发生轻度污染，有0.6%的样品中Hg与1.9%样品中Pb达到或超过中度污染，Cd的污染程度最高，有5.6%的样品达到重度污染。MPI结果显示，底栖生物与以之为食的肉食性种类水产品污染指数较高，但总体上各种水产品XMPI依然处于较低的水平。PTWI结果显示，Hg、Cu、Zn与Pb均处于低风险或无风险的范畴，但有3.6%的样品中Cd超过推荐阈值，Cr安全性最差，有30.3%的样本超过了推荐阈值。健康风险模型结果显示，所有样品均未超过国际辐射防护委员会(ICRP)推荐的最大可接受水平(5×10-6·a-1)。总体上看，当前台海浅滩渔场水产品尚未出现明显的污染安全问题，但Cd与Cr等元素的潜在风险值得进一步关注。 |
| 英文摘要: |
| A total of 165 samples including 59 species of typical aquatic products collected from the Taiwan shallow fishery was analyzedwith atomic fluorescence spectrometer(AFS) for Hg and inductively coupled plasma-mass spectrometer(ICP-MS) for Cr, Cu, Zn, Cd and Pb. Pollution level, consumer safety and health risk of the aquatic products were evaluated with single factor pollution index(Pi), heavy metal pollution index(MPI), provisional tolerable weekly intake(PTWI) and food health risk index(Ri total). The results indicated that except for Cd, the heavy metal concentrations were lowered than the prescript values set by the national standard for aquatic products(GB 18406.4-2001). Pi results showed that about 17.9%, 1.8% and 3.7% samples were slightly polluted with Cr, Cu and Zn, respectively; more than 0.6% and 1.9% samples reached or exceeded the values of "moderate pollution" set for Hg and Pb, and more than 5.6% samples were at the level of "heavy pollution" for Cd. MPI results indicated that relatively high XMPI values were observed on benthic and related fishes. Overall, the XMPI values of the aquatic products were at a low level. Analysis with PTWI showed that Hg, Cu, Zn and Pb were at low or none risk level. However, concentrations of Cd in 3.6% samples and Cr in 30.3% samples had exceeded the recommended threshold values. Assessment with health risk model suggested that the pollutant concentrations did not exceed the recommended maximum acceptable levels set by International Commission on Radiological Protection(ICRP). Although no obvious pollution safety problems were found in the aquatic products of Taiwan shallow fishery, potential risks of Cr and Cd still call for continual monitoring and further attention. |
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