South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China; Guangdong Provincial Key Laboratory of Fishery Ecology and Environment, Guangzhou 510300, China; Key Laboratory of Open-Sea Fishery Development, Ministry of Agriculture, Guangzhou 510300, China.
South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China; Guangdong Provincial Key Laboratory of Fishery Ecology and Environment, Guangzhou 510300, China; Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture, Guangzhou 510300, China.
Ecotoxicol Environ Saf. 2018 Nov 15;163:551-557. doi: 10.1016/j.ecoenv.2018.07.114. Epub 2018 Aug 1.
This study investigated the total concentrations and bioaccessibility of heavy metals in edible tissues and trophic levels of 12 marine organism species in the South China Sea. The results were used to estimate health risks to humans. Of the heavy metals detected, nickel (Ni) was present at the highest concentrations, followed in descending, order by iron (Fe), zinc (Zn), manganese (Mn), chromium (Cr), copper (Cu), cadmium (Cd) and lead (Pb). Cd had the highest percentage bioaccessibility (61.91%). There were no correlations between log-transformed total metal concentrations and trophic level values, nor between log-transformed bioaccessibility metal concentrations and trophic level values. This indicates there is no biomagnification among these trace metals. The carcinogenic risk probabilities for Pb and Cr to urban and rural residents were below the acceptable level (< 1 × 10). The target hazard quotient (THQ) value for each metal and the total THQ values for all metals studied indicated no significant risk of non-carcinogenic effects to urban and rural residents from consuming marine organisms from the South China Sea.
本研究调查了南海 12 种海洋生物的可食组织和营养级中重金属的总量浓度和生物可给性，用于评估对人类的健康风险。在所检测的重金属中，镍 (Ni) 的浓度最高，其次是铁 (Fe)、锌 (Zn)、锰 (Mn)、铬 (Cr)、铜 (Cu)、镉 (Cd) 和铅 (Pb)。Cd 的生物可给性最高（61.91%）。总金属浓度的对数变换值与营养级值之间没有相关性，生物可给性金属浓度的对数变换值与营养级值之间也没有相关性。这表明这些痕量金属之间没有生物放大作用。Pb 和 Cr 对城市和农村居民的致癌风险概率低于可接受水平（<1×10）。对于每种金属的目标危害系数 (THQ) 值和所有研究金属的总 THQ 值均表明，从南海食用海洋生物对城市和农村居民没有产生非致癌影响的显著风险。
