火焰原子吸收法测定香烟中的铜,锌,锰含量

• 作 者: 唐永 姚晓青 粱胜辉
• 机 构: 广东石油化工学院,
• 出 处: 广东化工
• 发表日期: 2014年02期
• 关键词: 原子吸收光谱仪 香烟 火焰 微量元素 原子吸收法测定 湿法消解 重金属 原子吸收光谱法 重金属超标 微量铜

对于部分国产香烟被检出重金属超标。通过实验对市面上销售的两个牌子的香烟进行了重金属含量的测定。先对样品进行预处理,研磨、烘干。再通过湿法消解用混合酸对香烟样品进行消解,得到液体试样。对得到的液体试样用火焰原子吸收光谱法测定试样中的微量铜、锌、锰等重金属。测定的两个牌子的香烟中都含有一定量的铜、锌、锰。采用此方法回收率在95.0%~105%之间,相对标准偏差小于5%。本方法简单、准确,结果令人满意。

For some domestic cigarettes were detected excessive heavy metals. Through experiments on the market two brands of cigarettes for heavy metal content determination. First sample pretreatment, grinding, drying. The sample was digested with mixed acid by wet digestion to obtain a liquid sample. The obtained liquid sample was subjected to flame atomic absorption spectrometry to determine trace amounts of heavy metals such as copper, zinc and manganese in the sample. Determination of the two brands of cigarettes contain a certain amount of copper, zinc, manganese. The recoveries of this method ranged from 95.0% to 105% with relative standard deviations less than 5%. The method is simple and accurate, the result is satisfactory.