Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China.
State Key Laboratory of Marine Resource Utilization in South China Sea, College of Oceanology, Hainan University, Haikou 570228, China.
Sci Total Environ. 2018 Jun 1;626:621-629. doi: 10.1016/j.scitotenv.2018.01.108. Epub 2018 Feb 19.
The total arsenic (As) and As species were analyzed in 19 species of wild marine organisms collected from 12 locations in Daya Bay, China; additionally, both the levels of As in the seawater and sediments and the salinity were investigated. The greatest level of As was found in crabs (13.4-35.1 μg/g), followed by shrimps (8.52-27.6 μg/g), benthic fish (3.45-28.6 μg/g), and pelagic fish (1.22-5.23 μg/g). There were significantly positive correlations between the As concentrations in the benthic fish Callionymus richardsonii/shrimp Metapenaeopsis palmensis and those in sediments, indicating that As levels in them were highly dependent on those in the sediments. Arsenobetaine (AsB) (87.3-99.8%) was the most dominant form of As found in all marine organisms. In benthic fish and shrimp, the bioaccumulation of As, especially AsB, was positively correlated with the salinity of the seawater, indicating that the salinity could control the transfer of As. The calculated hazard quotients (HQs) of the inorganic As in the marine organisms were all <1; thus, there was no apparent health hazard through the consumption of wild marine organisms.
在中国大亚湾的 12 个地点采集了 19 种野生海洋生物，分析了其总砷 (As) 和 As 物种；此外，还调查了海水中和沉积物中的 As 水平以及盐度。结果发现，As 含量最高的是蟹类（13.4-35.1μg/g），其次是虾类（8.52-27.6μg/g）、底栖鱼类（3.45-28.6μg/g）和洄游鱼类（1.22-5.23μg/g）。底栖鱼类 Richardsoni 蟹/虾类 Palmensis 对虾的 As 浓度与沉积物中的 As 浓度之间存在显著的正相关关系，表明它们体内的 As 水平高度依赖于沉积物中的 As 水平。所有海洋生物中最主要的 As 形式均为砷甜菜碱（AsB）（87.3-99.8%）。在底栖鱼类和虾类中，As，尤其是 AsB 的生物累积与海水盐度呈正相关，表明盐度可以控制 As 的迁移。海洋生物中无机 As 的计算危害商数（HQs）均<1；因此，通过食用野生海洋生物不存在明显的健康危害。
