吉林省居民膳食汞暴露评估

Assessment on dietary mercury exposure risk among residents in Jilin province

中文关键词:  总汞  膳食暴露  吉林省  风险评估

英文关键词:total mercury  dietary exposure  Jilin province  risk assessment

中文摘要:

      目的 掌握吉林省居民主要食物中汞含量水平, 对居民食品中汞的膳食暴露健康风险进行初步评估。方法 按照随机采样方法, 2015~2016年在全省63个县市区采集8类1237份食物样品, 按照GB/T 5009.17-2003《食品中总汞及有机汞的测定》, 结合居民膳食消费数据, 计算、比较每周耐受摄入量(provisional tolerable weekly intake, PTWI)。结果 8类食物中汞的平均含量均值为7.07 μg/kg。总汞的每周平均暴露量为0.50~1.01 μg/kg?bw, 占PTWI的12.54%~25.19%。谷物类、水产类和蔬菜类是居民膳食中总汞的主要来源。结论 吉林省地区居民膳食中总汞暴露水平是安全的。谷物类食品对居民膳食贡献率最高, 且吉林省谷物类食物消费量大, 故建议强化谷物类食物中汞污染的控制, 从源头上降低其污染量, 减少膳食风险。

英文摘要:

      Objective To master the mercury level in main foods among residents in Jilin province, and preliminarily assess the risk of dietary mercury exposure. Methods 1237 samples of 8 categories of food were collected from 63 counties/cites of Jilin province during 2015~2016 by the random sampling method. According to GB/T 5009.17-2003 Determination of total mercury and organic-mercury in foods, with the food consumption data, the provisional tolerable weekly intake (PTWI) was calculated and compared. Results The average concentration of mercury in 8 categories of food was 7.07 μg/kg. The weekly exposure level of total mercury ranged from 0.50~1.01 μg/kg?bw, which accounted for 12.54%~25.19% of the PTWI. Cereals, aquatic and vegetable categories were the main source of dietary total mercury exposure. Conclusion The dietary exposure levels of total mercury in Jilin province are safe. Considering the highest rate of dietary mercury exposure contributed by cereals and large amount consumption of cereals in Jilin province, it is necessary to strengthen the control of mercury pollution in cereals and decrease the pollution from source to reduce the dietary risk.