铂丝富集-火焰原子吸收光谱检测皮蛋中痕量铅  

Determination of Trace Lead in Preserved-egg by Flame Atomic Absorption Spectrometry

作　　者：黄燕[1] 

机构地区：[1]岳阳师范学院化学化工系,湖南岳阳414000

出　　处：《分析测试技术与仪器》2002年第3期174-177,共4页Analysis and Testing Technology and Instruments

摘　　要：一种运用火焰原子吸收测定皮蛋中铅含量的灵敏方法 ,它是通过用APDC 聚苯乙烯的化学方法修饰铂丝基质来实现的 .预浓缩铅溶液后 ,将修饰的铂丝基质 ,放置在火焰燃烧器上 ,以便直接雾化并测定 ,在溶液中铅的浓度为 5～ 5 0 0ng mL范围内一般呈线性 ,检测的极限是 0 .6 5ng mL 。A sensitive method for the determination of lead in preserved egg by flame absorption spectrometry using ammonium pyrrolidine dithiocarbamate-polystyrene chemically modified platinum wire matrix is presented. The modifled platinum wire matrix, after preconcentrating the lead is placed in a flame burner for direct atomization and measurement. The concentration range is linear between 5 and ng/mL 500 ng/mL lead in solution and the detection limit is 0.65 ng/mL, this new technique is sensitive and convenient.

关 键 词：铂丝富集 火焰原子吸收光谱 检测 皮蛋 铅 痕量分析 

分 类 号：TS253.46[轻工技术与工程—农产品加工及贮藏工程] TS253.7[轻工技术与工程—食品科学与工程]