二乙基二硫代氨甲酸银体系流动注射法测定砷  

Silver-Diethyldithiocarbamate System for the Determination of Arsenic by Flow Injection Analysis

作　　者：刘国权[1] 王春旭[1] 曹凤习 

机构地区：[1]河北轻化工学院环境工程系,石家庄050018 [2]石家庄市药品检验所,石家庄050000

出　　处：《分析化学》1996年第12期1429-1432,共4页Chinese Journal of Analytical Chemistry

摘　　要：本文设计了一种AgDDC流动注射-分光光度法测定砷的系统。该系统采用自制的氢化物发生及吸收装置，将液体流路和载气流路结合在一起。实验用AgDDC溶液作吸收溶液，氮气作载气，并对影响测定的主要因素进行了系统的考察研究。通过对土样的测定分析，结果证明该系统操作简便，重现性较好（RSD＝4．8％），分析速度为15次／h，是一种经济实用的测定砷的分析方法。A new FIA-AgDDC system with spectrophotometric detection was designed for arsenic determination. This system combines the solution fllow path with gas flow path by the hydride generator and the absorbing device. AgDDC solution was used for the absorption of arsenic hydride and N2 gas was used as the carrier gas. The main influence factors were studied. The results have proved that the main advantages of this system are simple equipment, easy operation, rapid determination (15 samples/h) and good reproducibility (RSD=4. 8% ).

关 键 词：流动注射分析 AgDDC 氢化物发生 砷 分光光度法 

分 类 号：O613.63[理学—无机化学] O657.3[理学—化学]