摘要
以程控蠕动泵输入硼氢化钾溶液装置取代原手动片剂投放方式，提高了ＨＧ－ＡＡＳ法测试精度和重现性。Ａｓ的检出限达到３０ｎｇ／２０ｍｌ。对土壤标准样品及水样分析，测得结果与推荐值很符合，标准加入的平均回收率为９７％和１０１％。
The technique for putting in reductant tablets by hand-in operating was replacedby a new apparatus with programme-controlled squirm pump in the HG-AAS method, whichimproved the precision and reproduction. Detection limit of As was 30ng/20ml. Measured results agreed well with the recommended values for the standard soil and natural water samples. The average recovery for the standard-input was about 97-101%
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
1994年第3期87-92,共6页
Spectroscopy and Spectral Analysis
关键词
氢化物发生
原子吸收
环境样品
砷
Hydride generation, Atomic absorption, Arsenic, Environmental sample
