Tianjin Academy of Environmental Sciences, Tianjin, 300191, China.
Tianjin Huanke Testing Technology Company Limited, Tianjin, 300191, China.
Environ Sci Pollut Res Int. 2016 Sep;23(17):17801-10. doi: 10.1007/s11356-016-6948-y. Epub 2016 Jun 1.
Fourteen aquatic organism samples were collected from Bohai Bay, and concentrations of five heavy metals were measured to evaluate the pollution levels in aquatic organisms and the potential risk to human health. The concentrations of Zn and Cu were much higher than those of Cd, Cr, and Pb in all the organisms. In general, the heavy metal concentration levels were in the order phytoplankton < zooplankton < fish < shrimp < shellfish. Heavy metal concentrations in higher trophic-level aquatic organisms in Bohai Bay were compared to those in the organisms from other worldwide coastal waters. The concentration levels of most heavy metals were higher than the 75th percentile, except that Pb concentration was between the 25th and 50th percentiles. The calculated bioconcentration factors (BCF) of Cr, Cu, and Pb for phytoplankton were less than 100, indicating no accumulation in primary producers. The bioaccumulation factor (BAF) of Pb for zooplankton was the highest, indicating significant Pb accumulation in zooplankton. For higher trophic-level aquatic organisms, the order of BAF values was fish < shrimp < shellfish for most metals except for Pb. The human health risk assessment suggests that strict abatement measures of heavy metals must be taken to decrease the health risk caused by consuming aquatic products.
从渤海湾采集了 14 个水生生物样本，测量了五种重金属的浓度，以评估水生生物的污染水平和对人类健康的潜在风险。在所有生物中，Zn 和 Cu 的浓度都远高于 Cd、Cr 和 Pb。一般来说，重金属浓度水平的顺序为浮游植物<浮游动物<鱼类<虾类<贝类。将渤海湾高营养级水生生物的重金属浓度与来自其他世界沿海水域的生物进行了比较。除 Pb 浓度在第 25 至 50 百分位之间外，大多数重金属的浓度水平均高于第 75 百分位。计算的浮游植物 Cr、Cu 和 Pb 的生物浓缩系数（BCF）均小于 100，表明初级生产者中没有积累。浮游动物的 Pb 生物积累系数（BAF）最高，表明浮游动物中 Pb 大量积累。对于高营养级水生生物，大多数金属的 BAF 值顺序为鱼类<虾类<贝类，除了 Pb。人体健康风险评估表明，必须采取严格的重金属减排措施，以降低食用水产品造成的健康风险。
