黑龙江环境通报
黑龍江環境通報
흑룡강배경통보
HEILONGJIANG ENVIRONMENTAL JOURNAL
2013年
4期
27-29
,共3页
石墨炉原子吸收法%空气采样器%测定%空气%铅
石墨爐原子吸收法%空氣採樣器%測定%空氣%鉛
석묵로원자흡수법%공기채양기%측정%공기%연
Graphite%furnace atomic absorption spectrometry%Air sampler%Determning%Air%Lead
用带微孔滤膜的空气采样器采集样品,以硝酸-高氯酸体系消解后,用石墨炉原子吸收法测定空气中铅的方法,以抗坏血酸和磷酸二氢氨作混合基体改进剂,热解涂层石墨管,塞曼扣背景。石墨炉法测定空气中的铅灵敏度、准确度高,方法的最低检出浓度是6．00μg/L,当采样体积为150L时,铅最低检出质量浓度为0．004mg/m3。
用帶微孔濾膜的空氣採樣器採集樣品,以硝痠-高氯痠體繫消解後,用石墨爐原子吸收法測定空氣中鉛的方法,以抗壞血痠和燐痠二氫氨作混閤基體改進劑,熱解塗層石墨管,塞曼釦揹景。石墨爐法測定空氣中的鉛靈敏度、準確度高,方法的最低檢齣濃度是6．00μg/L,噹採樣體積為150L時,鉛最低檢齣質量濃度為0．004mg/m3。
용대미공려막적공기채양기채집양품,이초산-고록산체계소해후,용석묵로원자흡수법측정공기중연적방법,이항배혈산화린산이경안작혼합기체개진제,열해도층석묵관,새만구배경。석묵로법측정공기중적연령민도、준학도고,방법적최저검출농도시6．00μg/L,당채양체적위150L시,연최저검출질량농도위0．004mg/m3。
Samples were taken by microporous membrane air sampler, Digested by the nitric acid-perchloric acid digestion system. Lead in air was determined by graphite furnace atomic absorption spectrometry with as-corbic acid and ammonia two hydrogen phosphate as a mixed matrix modifier, pyrolytic coated graphite tube, Zeeman background correction. Sensitivity and accuracy of determining lead in the air by graphite furnace method are greatly improved. The detection limit of concentration is 6. 00 ng/ml. When the sampling volume is 150L, the minimum detectable concentration of lead was 0. 004mg/m3 lead.
