李子孟 王范盛 朱剑

摘要 采用电感耦合等离子体质谱法（ICP-MS）对浙江省沿海常见海产品中的总砷和无机砷含量进行测定，采集并检测27种775个海产品样品，结果显示，不同种类海产品的总砷含量均值在0.5～17.0 mg/kg，其中总砷含量最高的是紫菜，均值达17.0 mg/kg，其次为甲壳类、头足类和贝类，鱼类总砷含量最低。根据不同种类海产品砷迁移规律和生活习性，推断藻类中总砷含量水平主要与它本身的细胞壁特性相关;贝类中总砷含量对沉积物中砷的富集率为27%～58%，蛤蜊相比其他贝类对砷的富集能力更强，为文蛤、青蛤总砷含量较高的主要原因;甲壳类中日本鲟和中华管鞭虾相对砷含量较高是因为較广的食性范围;鲈鱼为凶猛肉食性鱼类，总砷含量高的主要原因是摄食富集。

关键词 总砷;ICP-MS;含量测定;海产品;浙江省沿海

中图分类号 TS254.7 文献标识码 A

文章编号 0517-6611（2021）01-0186-02

doi：10.3969/j.issn.0517-6611.2021.01.050

Abstract In this study， the content of total arsenic and inorganic arsenic in the common marine products of Zhejiang Province was determined by inductively coupled plasma mass spectrometry （ICP-MS）. 27 kinds of 775 samples of marine products were collected and detected. The results showed that the average content of total arsenic in different kinds of marine products was between 0.5-17.0 mg/kg， among which Porphyra was the highest with the average content of 17.0 mg/kg，followed by crustaceans， cephalopods and shellfish， and the content of total arsenic in fish was the lowest among the three species. According to the migration rule and living habit of arsenic in different kinds of seafood， it was inferred that the level of total arsenic in algae was mainly related to its own cell wall characteristics;the enrichment rate of total arsenic in shellfish to arsenic in sediment was 27%-58%， and the enrichment ability of clam to arsenic was stronger than other shellfish， which was the main reason for the high content of total arsenic in clam and Cyclina sinensis;the relatively high arsenic content of Japanese sturgeon and Chinese tube prawns in crustaceans was due to the wide range of food habits;Perch was a fierce carnivorous fish， the main reason for the high total arsenic content was the enrichment of food.

Key words Total arsenic;ICP-MS;Content determination;Seafood;Zhejiang coastal area

目前，居民在日常饮食生活中的主要消费海产品包括鱼、虾、蟹、贝4类。随着工业的发展，自然环境不断遭到破坏，工业污染物的大量排放使得重金属残留于水体土壤中，水污染、土壤污染等污染问题日益严重，根据近几年的调查发现，我国各地区的水产品均受到了不同程度的污染，如华东地区市场上的水产品主要的重金属污染是铅、砷、镉，受污染物影响的种类主要为虾、蟹、贝类等水产品[1]。

砷（As）是一种广泛分布于自然环境中类金属元素，本身具有的毒性不仅会抑制动植物细胞酶的活性，更对人体有较强的致癌性，2017年世界卫生组织国际癌症研究机构（IARC）已将其列为I类致癌物[2-3]。……