粳稻谷中总砷和无机砷含量的测定及分布情况  

Determination and distribution of total arsenic and inorganic arsenic in japonica rice

作　　者：乔丽娜 崔高飞 徐波 Qiao Lina;Cui Gaofei;Xu Bo(Liaoning Inspection,Examination&Certification Centre,Shenyang 110032;Shenyang Grain and Oil Inspection and Monitoring Institute,Shenyang 110003)

机构地区：[1]辽宁省检验检测认证中心,沈阳110032 [2]沈阳市粮油检验监测所,沈阳110003

出　　处：《粮食与食品工业》2021年第1期65-68,共4页Cereal & Food Industry

摘　　要：本文采用ICP-MS法和LC-AFS法分别测定粳稻谷中的总砷和无机砷含量。结果表明:总砷在0~10 ng/mL的浓度范围内呈良好的线性关系,检出限为0.0207 ng/mL;As^3+和As^5+在0~50 ng/mL的浓度范围内呈良好的线性关系,As^3+检出限为0.24 ng/mL,As^5+检出限为0.44 ng/mL;44份粳稻谷样品检测结果表明,粳稻谷中无机砷含量占总砷含量的百分比范围为50.5%~78.9%。The contents of total arsenic and inorganic arsenic in japonica rice were determined by ICP-MS and LC-AFS.There was a good linear relationship between total arsenic and its concentration in the range of 0~10 ng/mL.The detection limit was 0.0207 ng/mL.There was a good linear relationship between inorganic arsenic and its concentration in the range of 0~50 ng/mL.The detection limit of As^3+was 0.24 ng/mL and the detection limit of As^5+was 0.44 ng/mL.The results of 44 samples of japonica rice showed that the inorganic arsenic content as a percentage of total arsenic content ranged from 50.5%to 78.9%.

关 键 词：粳稻谷 总砷 无机砷 测定 分布 

分 类 号：TS210.7[轻工技术与工程—粮食、油脂及植物蛋白工程]