摘要
本文研究了用冷分子吸收光谱法测定硫化物的方法。以镁空心阴极灯（ＨＣＬ）为激发光源测定了在２０２．６ｎｍ处Ｈ＿２Ｓ的分子吸收。考察了当采取蠕动泵断续、连续进样（Ｎ＿２为载气）及发生二氧化碳气体为载气进样三种不同进样方式时的实验参数，用三种进样方式时Ｓ￣（２－）的检出限分别为０．０５、０．０４、０．００６ｍｇ／Ｌ并用断续进样法测定了湖水、河水及大气中Ｓ￣（２－）的含量，结果个人满意。
method of determination for sulphideby cold vapor molecular absorption spectrometry was studied。 Hollow cathode lamp(HCL)of magnesium was used as radiation source formeasurement of H_2S at 202.6nm. Operatingconditions were investigated in detail whendiscontinuous and continuous sample introduc-tion system with carrier gas N_2 and sample in-troductiOn system with carrier gas CO2 wereused. The detection limits for three sample intYOduction methodswere 0.05,0.04 and 0.006mg/L,respectively.
出处
《分析试验室》
CAS
CSCD
北大核心
1996年第6期1-4,共4页
Chinese Journal of Analysis Laboratory
关键词
冷分子吸收光谱法
硫化物
Vapor molecular absorptionspectrometry
sulphide
