2017~2019年日照市市售海带中铅、镉、汞、砷、无机砷污染监测分析

Monitoring and analysis of lead, cadmium, mercury, arsenic and inorganic arsenic pollution in marketed kelp sold in Rizhao city from 2017 to 2019

中文关键词:  海带  铅  镉  汞  砷  无机砷  污染

英文关键词:kelp  lead  cadmium  mercury  arsenic  inorganic arsenic  pollution

中文摘要:

      目的 调查日照市市售海带中常见污染物铅、镉、汞、砷、无机砷污染的含量。方法 在市直、县区各农贸市场、超市、食堂等进行随机采样, 用电感耦合等离子体质谱仪(inductively coupled plasma mass spectrometer, ICP-MS)测定市售海带中铅、镉、汞、砷的含量, 用液相色谱-原子荧光光谱仪测定无机砷的含量, 并按照湿、淡干、盐干等3种海带样品进行分类, 对检测结果进行比较分析。结果 3类样品中铅、镉、汞、砷及无机砷的含量在不同年度之间具有一致性。在同一年度中, 铅、镉、砷含量的平均值为湿<盐干<淡干; 汞含量平均值为湿<盐干、淡干, 盐干、淡干样品中汞含量无显著差异; 湿样品无机砷含量均合格, 而淡干、盐干样品合格率偏低。结论 海带中铅、镉、汞、砷、无机砷污染普遍存在, 监管与安全风险评估中应重视在湿、淡干与盐干海带中铅、镉、汞、砷、无机砷含量的差别。

英文摘要:

      Objective To investigate the pollution contents of lead, cadmium, mercury, arsenic and inorganic arsenic in the kelp sold in Rizhao. Methods Random sampling was conducted in farmers' markets, supermarkets and canteens in cities and counties. The contents of lead, cadmium, mercury, and arsenic in commercial kelp were determined by inductively coupled plasma mass spectrometer (ICP-MS), the contents of inorganic arsenic were determined by liquid chromatography-atomic fluorescence spectrometer, and the detection results were compared and analyzed according to the classification of wet, light-dry, and salt-dry kelp samples. Results The contents of lead, cadmium, mercury, arsenic and inorganic arsenic in the 3 categories of samples were consistent from year to year.In the same year, the average contents of lead, cadmium and arsenic were wet