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当前位置: 首页 > 文章 > 基于多壁碳纳米管/Nafion修饰电极的溶出伏安法测定大豆和大米重金属铅含量 中国油料作物学报 2020 (3) 350-355
Position: Home > Articles > Determination of heavy metal lead in soybean and rice use a multi-walled carbon nanotube/Nafion modified electrode by stripping voltammetry Chinese Journal of Oil Crop Sciences 2020 (3) 350-355

基于多壁碳纳米管/Nafion修饰电极的溶出伏安法测定大豆和大米重金属铅含量

作  者：
王忠政;洪琦
单  位：
关键词：
多壁碳纳米管;Nafion分散液;重金属铅;粮油产品
摘  要：
建立了一种测定大豆和大米中重金属铅含量的多壁碳纳米管/Nafion溶出伏安方法。该方法对重金属铅的线性方程为y=4.66x+46.19,相关系数为0.994,线性范围0.1～20.0μmol/L。实际样品测试中多壁碳纳米管/Nafion材料对大豆中铅的样品回收率为99.50%～100.37%,相对标准偏差小于5.36%;对大米中铅的回收率为98.75%～101.25%,相对标准偏差小于5.63%。该方法可适用于大豆和大米为主的粮油产品中重金属铅的检测,为加强食品安全保障提供技术支撑。
译  名：
Determination of heavy metal lead in soybean and rice use a multi-walled carbon nanotube/Nafion modified electrode by stripping voltammetry
作  者：
WANG Zhong-zheng;HONG Qi;School of life Science, Hubei University;Oil Crops Research Institute, Chinese Academy of Agricultural Science;Quality Inspection and Test Center for Oilseeds Products, Ministry of Agriculture and Rural Affairs;
关键词：
multi-walled carbon nanotube;;Nafion;;heavy ion Pb;;grain and oil products
摘  要：
A multi-walled carbon nanotube/Nafion modified electrode for determination of heavy metal ion lead in soybean and rice by stripping voltammetry was established. The linear regress equation was y = 4.66 x+46.19, with correlation coefficient of 0.994. The detection limit was in the range of 0.1～20 μmol/L. The recoveries of lead in the soybean were in the range of 99.50% ～ 100.37%, with RSD less than 5.63%.The recoveries of lead in the rice were in the range of 98.75% ～ 101.25%, with RSD less than 5.63%.The method was applied to the detection of heavy metal ion lead in soybean and rice.It has safeguard effect to grain and oil products.

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