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引用本文:   刘庆阳, 张婷婷. 固相萃取-离子色谱测定大气颗粒物的甲胺类及其氧化产物. 分析化学, 2018, 46(4): 524-529. doi:  10.11895/j.issn.0253-3820.171360 [复制]

Citation:   LIU Qing-Yang, ZHANG Ting-Ting. Determination of Methylamines and Methylamine-N-oxides in Particulate Matter Using Solid Phase Extraction Coupled with Ion Chromatography. Chinese Journal of Analytical Chemistry, 2018, 46(4): 524-529. doi: 10.11895/j.issn.0253-3820.171360 [复制]

固相萃取-离子色谱测定大气颗粒物的甲胺类及其氧化产物

通讯作者:  刘庆阳, qyliu@njfu.edu.cn

收稿日期: 2017-10-20

接受日期: 2018-01-26

出版日期: 2018-04-01

基金项目: 本文系国家自然科学基金项目(No.41305110)资助

Determination of Methylamines and Methylamine-N-oxides in Particulate Matter Using Solid Phase Extraction Coupled with Ion Chromatography

Corresponding author:  LIU Qing-Yang, qyliu@njfu.edu.cn

Received Date:  2017-10-20

Accepted Date:  2018-01-26

Published Date:  2018-04-01

Fund Project:  This work was supported by the Natural National Science Foundation of China (No.41305110)

建立了测定大气颗粒物中氧化三甲胺、一甲胺、二甲胺和三甲胺的固相萃取离子色谱的分析方法。选取20 mL甲醇-水(1:3,V/V)混和液,超声提取石英滤膜,重复提取2次。提取结束后,合并3次提取液共60 mL,上样到固相萃取设备。使用Agilent AccuBond C18为固相萃取柱富集提取液中的一甲胺、二甲胺、三甲胺和氧化三甲胺。采用0.5 mL乙腈洗脱萃取柱上的甲胺类物质。洗脱后,向溶液中加入1.5 mL去离子水定容,离子色谱定量分析。用阳离子色谱柱PRP X-200(250 mm×4.1 mm,10 μm)为分离柱,以3%(V/V)乙腈和5 mmol/L HNO3为淋洗液,流动相流速1.0 mL/min,柱温箱温度25℃,30 min内4种胺类物质完全分离。方法线性范围为0.45~1000 μg/kg,精密度在2%~4%之间,检出限为0.09~0.14 μg/kg(0.002~0.003 μg/m3),加标回收率大于90%。将本方法应用于北京市沙尘和霾天气的细颗粒样品分析中,三甲胺和氧化三甲胺的浓度分别为0.01~0.08 μg/m3和0.02~0.14 μg/m3

关键词:   固相萃取, 离子色谱, 氧化三甲胺, 甲胺, 颗粒物
Key words:   Solid phase extraction, Ion chromatography, Methylamine-N-oxide, Methylamine, Particulate matter
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固相萃取-离子色谱测定大气颗粒物的甲胺类及其氧化产物

刘庆阳, 张婷婷

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