摘要
介绍了用离子色谱法测定大气总悬浮颗粒物（TSP）中的F~－，Cl~－，NO^-_3及SO^2-_4。对过氯乙烯采样滤膜用去离子水（DIH_2O）作为提取液进行超声波提取。方法的平均回收率分别为F^-98．7％，Cl^-103％，NO^-_3101％及SO^2-_499．8％，相对标准偏差为F~－0．29％，Cl~－0．32％，NO^-_30．30％及SO^2-_40．25％。
In this paper the method used for the determination of F-, Cl-, NO, and SO^2-_4 in the total suspended particles in air (TSP)by ion chromatography was established. The contrast between the blank values of filter membranes of ultra-thin glass fiber and chlorinated PVC, the contrast between extraction methods by supersonic extraction with 70℃water and by just stand for 24h, and the contrast between extraction solutions with deionized water and the eluent (2. 2 mmol/L Na2CO3-2. 8 mmol/L NaHCO3) were involved. The determination of the uniformity of filter membrane and the typical samples were also carried out. This paper adopted ethylene tetrachloride filter membrane, deionized water and supersonic for extraction. The average recoveries of this method for F-,Cl-,NO, and SO^2-_4 were 98. 7%, 103%, 101% and 99. 8% respectively and the RSD's were 0. 29%, 0. 32%,0.30% and 0.25% respectively. This method possesses better recovery and precision.
出处
《色谱》
CAS
CSCD
北大核心
1999年第3期313-314,共2页
Chinese Journal of Chromatography
关键词
离子色谱
TSP
氟离子
氯离子
硝酸根
硫酸根
ion chromatography, air total suspended particle (TSP), fluoride, chloride, nitrate, sulfate
