石墨炉原子吸收光谱法测定麦麸颗粒中镉  

Determination of Cadmium in Wheat Bran Pellets by Graphite Furnace Atomic Absorption Spectrometry

作　　者：陈新 罗琼 胡建民 李芳 李艳美 王兴磊 CHEN Xin;LUO Qiong;HU Jianmin;LI Fang;LI Yanmei;WANG Xinglei(College of Chemistry&Environmental Sciences,Yili Normal University,Key Laboratory of Pollutant Chemistry and Environmental Treatment,Yining,Xinjiang 835000,China;Yining Customs Technology Center,Yining,Xinjiang 835000,China)

机构地区：[1]伊犁师范大学化学与环境科学学院,污染物化学与环境治理重点实验室,新疆伊宁835000 [2]伊宁海关技术中心,新疆伊宁835000

出　　处：《中国无机分析化学》2023年第7期684-688,共5页Chinese Journal of Inorganic Analytical Chemistry

基　　金：新疆维吾尔自治区自然科学基金资助项目(2021D01A89);伊犁师范大学污染物化学与环境治理重点实验室开放课题(2018HJZD01)。

摘　　要：为消除石墨炉原子吸收光谱法测定麦麸中镉时基体产生的背景干扰,在消解液中加入镉标准溶液配制基体匹配工作曲线进行测定,对灰化温度、原子化温度及基体改进剂等条件进行优化,确定最佳分析方法。结果表明,在选定条件下,镉在0~3.0μg/L范围内工作曲线相关系数为0.9991,检出限为0.027μg/L,定量限为0.091μg/L,加标回收率为89.5%~104%,精密度为1.6%~4.3%,质控物质测定结果准确。方法操作简便,快速准确,精密度良好,适用于麦麸中镉元素的测定。To eliminate the background interference caused by the matrix during the determination of cadmium in wheat bran via graphite furnace atomic absorption spectrometry,cadmium standard solution was added into the digestion solution to prepare the matrix matching curve for determination.The optimum analysis method was determined by optimizing the conditions of ashing temperature,atomization temperature and matrix improver.The results show that,under the selected conditions,the correlation coefficient of the working curve of cadmium in the range of 0—3.0μg/L was 0.9991,the detection limit was 0.027μg/L,the limit of quantification was 0.091μg/L,the recovery was 89.5%—104%,and the precision was 1.6%—4.3%.The results of quality control materials determination were accurate.The method is simple,rapid,accurate and precise.It is suitable for the determination of cadmium in wheat bran.

关 键 词：石墨炉原子吸收光谱 麦麸 镉 基体工作曲线 

分 类 号：O657.31[理学—分析化学] TH744.12[理学—化学]