流动注射在线萃取石墨炉原子吸收法测定芦荟中的铅  

Determination of Lead in Aloe by GFAAS with On Line Extraction Flow Injection

作　　者：刘汉东[1] 陈恒初[1] 吴旺喜[1] 涂平[1] 

机构地区：[1]江汉大学化学与环境工程学院,武汉430019

出　　处：《环境科学与技术》2002年第5期22-23,共2页Environmental Science & Technology

摘　　要：以APDC/MIBK为萃取系统 ,流动注射在线液 液萃取石墨炉原子吸收光谱法测定芦荟样品中痕量铅 ,对萃取条件 ,流路参数及共存组分的干扰等均进行了探讨。本法的测定精密度 (RSD)为 3 .74% ,检出限 (3σ)为 3 .2× 1 0 - 1 2 g ,加标回收率为 93 %～ 99%。测定结果令人满意。A new method for the determination the trace amounts of lead in Aloe by GFAAS with on line solvent extraction flow injection was proposed, APDC/MIBK were used as extraction solvent in this method. Extraction condition, manifold parameters and interference of the coexist component were investigated .The precision (RSD) is 3.74%, the detectable limit (3σ) is 3.2×10 12 g, the recovery of standard addition is 93～99% .Samples of aloe were detected , and the result is satisfactory.

关 键 词：流动注射 在线萃取 石墨炉原子吸收法 芦荟 铅 

分 类 号：X835[环境科学与工程—环境工程]