Table_1_Heavy metal contamination in duck eggs from a mercury mining area, southwestern China.DOCX

ObjectiveMercury (Hg) contamination in the environment around mercury mines is often accompanied by heavy metal contamination.
MethodsHere, we determined concentrations of chromium (Cr), zinc (Zn), strontium (Sr), barium (Ba), and lead (Pb) in duck eggs from a Hg mining area in Southwest China to assess the contamination and health risk.
ResultsDuck eggs obtained from the mining area exhibit higher concentrations of Cr, Zn, Sr, Ba, and Pb compared to those from the background area, with egg yolks containing higher metal levels than egg whites. Specifically, the mean Cr, Zn, Sr, Ba, and Pb concentrations of duck eggs from the Hg mining area are 0.38, 63.06, 4.86, 10.08, and 0.05 μg/g, respectively, while those from the background area are only 0.21, 24.65, 1.43, 1.05, and 0.01 μg/g. Based on the single-factor contamination index and health risk assessment, heavy metal contamination in duck eggs poses an ecological risk and health risk.
ConclusionThis study provides important insight into heavy metal contamination in duck eggs from Hg mining areas.

【研究目的】汞矿周边环境中的汞（Hg）污染往往伴随重金属污染。【研究方法】本研究测定了中国西南某汞矿区鸭蛋中铬（Cr）、锌（Zn）、锶（Sr）、钡（Ba）及铅（Pb）的含量，以评估该区域的污染状况与健康风险。【研究结果】采集自该汞矿区的鸭蛋中Cr、Zn、Sr、Ba及Pb的含量显著高于背景区域鸭蛋，且蛋黄中的重金属含量高于蛋清。具体而言，汞矿区鸭蛋的Cr、Zn、Sr、Ba、Pb平均含量分别为0.38、63.06、4.86、10.08和0.05 μg/g，而背景区域鸭蛋的对应平均含量仅为0.21、24.65、1.43、1.05和0.01 μg/g。基于单因子污染指数与健康风险评估，该区域鸭蛋中的重金属污染兼具生态风险与健康风险。【研究结论】本研究为汞矿区鸭蛋中的重金属污染研究提供了重要参考。