期刊论文

Song, GS

中文

光谱学与光谱分析

1000-0593

2005

25

4

570-572

10.3321/j.issn:1000-0593.2005.04.025

科技部农业科技成果转化基金

本校为第一且通讯机构

报道了以磷酸氢二铵为基体改进剂, 采用悬浮体制样石墨炉原子吸收光谱法(GFAAS)测定板栗中微量铅的方法. 对悬浮体的制备、基体改进剂的选择及用量、灰化温度、原子化温度、常见元素对测定的干扰等进行了研究. 在优化实验条件下, 本法的检出限为0.47 ng·mL-1, 相对标准偏差(RSD)为6.1%, 加标回收率在90%～106%之间.

A method for the direct determination of trace lead in chestnut by Graphite Furnace Atomic Absorption Spectrometry (GFAAS) with slurry sampling was developed in the present paper. Ammonium ortho-phosphate was used as a matrix modifier. The effects of slurry preparation, particle size of sample, matrix modifier, ashing temperature, atomization temperature, and common coexisting components on the determination of lead were studied. Under the optimized operating conditions, the detection limit, the relative standard deviation (RSD), and the recove...