Cheng Jinping, Gao Lili, Zhao Wenchang, Liu Xiaojie, Sakamoto Mineshi, Wang Wenhua
School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
Sci Total Environ. 2009 Apr 1;407(8):2625-30. doi: 10.1016/j.scitotenv.2009.01.032. Epub 2009 Feb 8.
Zhoushan Island is situated in the coast of the East China Sea. In order to assess the potential health risks associated with dietary consumption of mercury, hair samples from 59 piscatorial households, thirteen species of fish, crops and poultry samples were collected from the fishing villagers of Zhoushan. Total mercury (T-Hg) and methylmercury (MeHg) concentrations in the fathers' hair (mean, 5.7 and 3.8 microg/g) were approximately 2.5 and 2.1 times greater and 2.6 and 2.0 times higher than those of their wives (2.3 and 1.8 microg/g) and their children (2.2 and 1.7 microg/g), respectively. However, the mean quantity of the fish consumed by the fathers was 2.5 and 2.4 times higher than those of the mothers and children, implying that there was a wide variation in hair Hg concentrations between the fathers and the mothers and children of the same household, which was probably related to the quantity, frequency and type of fish consumed. The average T-Hg and MeHg concentrations in all species of fish were 0.26 and 0.18 microg/g, respectively. Approximately, 15% and 19% of the samples showed T-Hg and MeHg levels which exceeded the limit established by the Chinese National Standard Agency (CNSA) (0.3 and 0.2 microg/g), respectively. However, T-Hg and MeHg levels in crops, poultry, milk, drinking water, food oil and salt samples were all below the corresponding CNSA limit. The estimated total daily dietary intakes of T-Hg and MeHg via different food types showed that fish intake was the major source (>85%) of Hg exposure. The consumption advisories for the total quantity of thirteen species of fish were 69.3, 58.7 and 15.0 g per day for fathers, mothers and children, respectively.
舟山岛位于中国东海沿岸。为评估膳食汞摄入相关的潜在健康风险，从舟山渔村采集了59户渔民家庭的头发样本、13种鱼类样本、农作物和家禽样本。父亲头发中的总汞（T-Hg）和甲基汞（MeHg）浓度（均值分别为5.7和3.8微克/克）比其妻子（2.3和1.8微克/克）和孩子（2.2和1.7微克/克）的浓度分别高出约2.5倍和2.1倍，以及2.6倍和2.0倍。然而，父亲的鱼类摄入量均值比母亲和孩子分别高出2.5倍和2.4倍，这意味着同一家庭中父亲与母亲及孩子的头发汞浓度存在很大差异，这可能与鱼类的摄入量、食用频率和种类有关。所有鱼类的平均T-Hg和MeHg浓度分别为0.26和0.18微克/克。分别约有15%和19%的样本显示T-Hg和MeHg水平超过了中国国家标准机构（CNSA）设定的限值（0.3和0.2微克/克）。然而，农作物、家禽、牛奶、饮用水、食用油和盐样本中的T-Hg和MeHg水平均低于相应的CNSA限值。通过不同食物类型估算的T-Hg和MeHg每日膳食总摄入量表明，鱼类摄入是汞暴露的主要来源（>85%）。13种鱼类的每日食用建议量分别为：父亲69.3克、母亲58.7克、孩子15.0克。
