食品科学

• 营养卫生 • 上一篇    下一篇

浙江沿海海产品甲基汞污染调查及膳食风险评估

梅光明,张小军,钟 志,宋 凯,李子孟,郭远明*   

  1. 浙江省海洋水产研究所,浙江省海水增养殖重点实验室,浙江 舟山 316021
  • 出版日期:2016-09-15 发布日期:2016-09-22

Survey of Methylmercury Contamination in Coastal Seafoods in Zhejiang Province and Potential Dietary Health Risk Assessment

MEI Guangming, ZHANG Xiaojun, ZHONG Zhi, SONG Kai, LI Zimeng, GUO Yuanming*   

  1. Key Laboratory of Mariculture and Enhancement of Zhejiang Province, Marine Fisheries Research Institute of Zhejiang,Zhoushan 316021, China
  • Online:2016-09-15 Published:2016-09-22

摘要:

运用高效液相色谱-原子荧光联用法研究海产品肌肉中汞形态分布特征,调查了浙江沿海50 个品种共计891 个样本中甲基汞含量,并结合浙江省居民水产品消费量,对海产品甲基汞污染食用风险进行了评估。结果显示:94.2%的海产品均有甲基汞检出,甲基汞是海产品肌肉中汞元素的主要存在形态,其含量占总汞质量分数65.0%~95.2%,所有样品甲基汞含量范围为0~0.95 mg/kg,均低于国家标准限量值;不同鱼类甲基汞含量存在差异,营养级别高的鱼类对甲基汞的生物富集能力较强,鲨鱼、金枪鱼等大型肉食性鱼类甲基汞含量明显高于一般鱼类,存在超标可能性;风险评估表明,浙江沿海一般海产品甲基汞污染食用风险较低,但长期或大量食用金枪鱼和鲨鱼等甲基汞污染较高的海产品,存在健康风险。

关键词: 浙江沿海, 海产品, 甲基汞, 污染调查, 风险评估

Abstract:

The distribution characteristics of mercury in seafood muscle were studied by using high performance liquid
chromatography and atomic fluorescence spectrometry. The methylmercury contents in 891 samples of 50 species in coastal
areas of Zhejiang province were determined. Taking into consideration the data of aquatic product consumption in daily
life, health risks from methylmercury in seafoods were assessed. Results showed that more than 94.2% of these samples
contained detectable levels of methylmercury. Methylmercury was the major form of mercury in aquatic products with
total mercury content ranging from 65.0% to 95.2%. The determined values of methylmercury in all samples ranged from
0 to 0.95 mg/kg, which were lower than the maximum allowable limit stipulated in the national standard. Aquatic products
with different trophic levels had different abilities of methylmercury bioconcentration. The fish with higher nutrient level
have stronger bioconcentration ability. Methylmercury contents in the large predatory fish such as shark and tuna were
significantly higher than those in common fish. The risk assessment indicated that health risk from methylmercury in seafood
products in Zhejiang coastal areas was low except in the case of long-term or high-level consumption fish such as shark and
tuna with high methylmercury concentration.

Key words: Zhejiang coastal areas, seafood, methylmercury, pollution investigation, risk assessment

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