Environmental and Computational Chemistry Group, University of Cartagena, Cartagena, Colombia.
Int J Environ Health Res. 2009 Oct;19(5):343-55. doi: 10.1080/09603120902749090.
Fish belonging to several trophic levels from Cartagena Bay, a tropical estuary, were collected and analyzed for total mercury (T-Hg) concentrations in muscle. T-Hg concentrations varied from 0.010-0.526 microg/g, and the overall average was 0.051 +/- 0.002 microg/g. Carnivorous species presented the highest T-Hg mean value (0.100 +/- 0.006 microg/g), followed by omnivorous (0.076 +/- 0.014 microg/g) and detritivorous (0.028 +/- 0.001 microg/g). The relationships between weight and T-Hg content were found for the carnivorous species Sciades herzbergi (r = 0.508, p < 0.001) and not for the detritivorous Mugil incilis (r = 0.086, p = 0.207). Although results suggest fish from the bay pose a low health threat for humans in terms of Hg exposure, vulnerable groups such as pregnant women, should avoid eating large size carnivorous species. Knowledge about species with low Hg content should be widespread within fishing communities, guaranteeing adequate nutrition by including fish in the diet and reducing the risk of Hg poisoning.
从热带河口卡塔赫纳湾采集了几种营养级别的鱼类，并分析了其肌肉中的总汞（T-Hg）浓度。T-Hg 浓度范围为 0.010-0.526μg/g，总体平均值为 0.051±0.002μg/g。肉食性物种的 T-Hg 平均值最高（0.100±0.006μg/g），其次是杂食性物种（0.076±0.014μg/g）和碎屑食性物种（0.028±0.001μg/g）。研究发现，肉食性的 S. herzbergi （r = 0.508，p < 0.001）与碎屑食性的 M. incilis （r = 0.086，p = 0.207）之间存在体重与 T-Hg 含量之间的关系。尽管结果表明，从该海湾捕获的鱼类对人类的汞暴露风险较低，但孕妇等弱势群体仍应避免食用大型肉食性鱼类。在渔业社区中，应广泛普及低汞含量鱼类的知识，通过在饮食中加入鱼类来保证充足的营养，同时降低汞中毒的风险。
