石英缝管火焰原子吸收光谱法测定茶叶中的痕量铅  

Determination of trace lead in tea by slotted quartz tube atomic absorption spectrometry

作　　者：蒋皎梅[1] 陈国松[1] 张红漫[1] 张之翼[1] 华毅超[1] 吴小伟[1] 洪颖[1] 卢伟[1] 

机构地区：[1]南京工业大学理学院,江苏南京210009

出　　处：《南京工业大学学报（自然科学版）》2004年第5期54-56,共3页Journal of Nanjing Tech University(Natural Science Edition)

摘　　要：设计并自制了石英缝管装置,用以辅助火焰原子吸收光谱法测定茶叶中的痕量铅。对铅的测量灵敏度较常规火焰原子吸收法提高了9倍以上,检出限低达0 02μg/mL。装置简单,方法简便,有效地降低了对测量灵敏度较低的组分的富集要求,提高了分析结果的可靠性。The concentration of trace lead in tea was determined by flame atomic absorption spectrometry equipped with a set of self-made slotted quartz tube. The sensitivity of this method was improved more than 9 times compared with ordinary flame atomic adsorption spectrometry, and the lower detection limit can reach to 0.02 μg/mL. It is rapid and convenient with a simple setting. The reliability of results obtained has been enhanced for no necessary of enriching desired constituent with low response sensitivity.

关 键 词：石英缝管 火焰原子吸收光谱法 测定 茶叶 铅 

分 类 号：TS272.7[农业科学—茶叶生产加工] O657.31[轻工技术与工程—农产品加工及贮藏工程]