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冰川冻土 ›› 2019, Vol. 41 ›› Issue (3): 574-578.doi: 10.7522/j.issn.1000-0240.2019.0518

• 冰冻圈与全球变化 • 上一篇    下一篇

离子色谱法测定冰川末端大气PM2.5可溶性离子及其来源解析

崔晓庆1, 任贾文1, 王泽斌2, 余光明3, 岳广洋1   

  1. 1. 中国科学院 西北生态环境资源研究院 冰冻圈科学国家重点实验室, 甘肃 兰州 730000;
    2. 中国民用航空 西北地区空中交通管理局气象中心, 陕西 西安 710082;
    3. 安庆师范学院 资源环境学院, 安徽 安庆 246011
  • 收稿日期:2018-03-06 修回日期:2018-11-02 出版日期:2019-06-25 发布日期:2019-09-10
  • 作者简介:崔晓庆(1980-),女,山东平度人,工程师,2011年在中国科学院寒区旱区环境与工程研究所获博士学位,从事冰冻圈化学分析及冰冻圈环境记录研究.E-mail:xiaoqing@lzb.ac.cn
  • 基金资助:
    中科院仪器设备功能开发创新项目(Y429C51005);国家自然科学基金项目(41301064);甘肃省自然科学基金项目(1506RJZA286;1506RJZA290)资助

Soluble ions in atmospheric PM2.5 over glacier terminus determined by ion chromatography and source analysis

CUI Xiaoqing1, REN Jiawen1, WANG Zebin2, YU Guangming3, YUE Guangyang1   

  1. 1. Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China;
    2. Northwest Air Traffic Management Bureau of the Civil Aviation Administration of China, Xi'an 710082, China;
    3. School of Resources and Environment Sciences, Anqing Normal University, Anqing 246011, Anhui, China
  • Received:2018-03-06 Revised:2018-11-02 Online:2019-06-25 Published:2019-09-10

摘要: 为了研究祁连山西段冰川末端地区大气PM2.5细粒子中可溶性无机离子组分的变化特征,于2011年采集了一批大气PM2.5的Telfon滤膜样品,并应用离子色谱对可溶性离子进行了分析。样品采用超纯水超声萃取各种水溶性离子,优化的萃取溶液体积为25 mL,萃取时间为30 min,萃取液用0.45μm纤维滤膜过滤,各种离子在一定浓度范围内线性关系良好,相关系数r>0.999。所测样品的阴阳离子中,SO42-、NO3-、Ca2+、和NH4+的质量浓度约占到水溶性离子总量的88%。可溶性离子浓度呈现出春夏高、秋冬低的季节变化特征,夏季可溶性离子浓度最高。

关键词: 离子色谱法, 可溶性离子, 冰川末端, PM2.5

Abstract: In order to study the atmospheric PM2.5 fine particles in Qilian Mountain glacier terminals,a batch of atmospheric PM2.5 telfon membrane samples had collected in 2011 and analyzed the soluble ions by application of ion chromatography. From samples,all kinds water soluble ion were extracted by ultrasonic with ultrapure water;the optimized extraction solution volume was 25 mL;extraction duration was 30 min;extract liquor was filtrated with 0.45 μm fiber membrane filter;all kinds of ions in a certain concentration range was good with correlation coefficient r>0.999. Among the measured cation-anion,SO42-,NO3-,Ca2+ and NH4+ concentration accounted for about 88% of the total water soluble ion;soluble ion concentration was significant high in summer, followed by spring and then by autumn and winter.

Key words: ion chromatography, soluble ion, glacier terminus, PM2.5

中图分类号: 

  • P343.6