原子吸收光谱法测定核桃中镉的含量  

Determining Cadmium Content of Walnut by Atomic Absorption Spectrometry

作　　者：葛亮[1] 申玉飞[1] 杨烨 

机构地区：[1]新疆轻工职业技术学院,新疆乌鲁木齐830021 [2]喀什出入境检验检疫局技术中心,新疆喀什844000

出　　处：《农产品加工（下）》2012年第9期138-139,144,共3页Farm Products Processing

摘　　要：采用石墨炉原子吸收法进行测定,利用微波消解技术,在硝酸介质中,磷酸二氢铵和硝酸镁为基体改进剂,以赛曼扣背景校正石墨炉原子吸收法测定核桃中的镉含量。结果表明,镉在1～10 ng/mL内,质量浓度与吸光度线性关系良好(r=0.999 4,n=5)。此方法测定快速、准确、稳定。The Cadmium content is determined by graphite furnace atomic absorption. It use microwave digestion technology, in nitric acid media, ammonium dihydrogen phosphate and magnesium nitrate are used as matrix modifier. Zeeman is used as background deduction to correct the cadmium content determined by graphite furnace atomic absorption spectrometry in walnuts. Cadmium shows a good linear relationship by graphite furnace atomic absorption at a rang of 1-10 ng/mL, r=0.999 4 （n=5） . The methods are accurate, quick and stable.

关 键 词：核桃 微波消解 原子吸收法 镉 

分 类 号：O657[理学—分析化学]