摘要
萃取－液相色谱用于同时测定痕量金属离子已引起广泛重视［１～３］，但操作方法繁琐，样品易玷污［４］．我们曾用固相萃取的方法使金属离子衍生为二乙基二硫代氨基甲酸盐（ＤＴＣ）配合物富集后，继以ＨＰＬＣ分离测定了钴、铜和汞［５］．本文研究了流动注射固相萃取预...
A home designed pressure tight preconcentration column combined with the HPLC six port valve was used to interface the FI sorbent extraction preconcentration system and HPLC. Based on this system, a method for determination of trace amount of Ni, Cu and Hg in water samples after on line derivatization and preconcentration as their diethyldithiocarbamate complexes has been developed. The sensitivity and selectivity can be further improved by using time programming for absorption measurement. The detection limit 0 16 μg/L, 0 41 μg/L and 1 1 μg/L, and the relativity standard deviation, 3 6%, 4 5% and 3 9%, were found for Ni(Ⅱ), Cu(Ⅱ) and Hg(Ⅱ), respectively.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1998年第11期1746-1748,共3页
Chemical Journal of Chinese Universities
基金
浙江省分析测试基金
关键词
FI-HPLC联机
HPLC
镍
铜
汞
测定
FI HPLC, On line derivatization and preconcentration, Nickel, Copper, Mercury
