An interlaboratory comparison of aerosol inorganic ion measurements by ion chromatography: implications for aerosol pH estimate
文献类型：期刊论文
| 作者 | Xu, Jingsha1; Song, Shaojie2; Harrison, Roy M.1,3; Song, Congbo1; Wei, Lianfang4; Zhang, Qiang5; Sun, Yele4; Lei, Lu4; Zhang, Chao6,7 ; Yao, Xiaohong6,7,8
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| 刊名 | ATMOSPHERIC MEASUREMENT TECHNIQUES
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| 出版日期 | 2020-11-25 |
| 卷号 | 13期号:11页码:6325-6341 |
| ISSN号 | 1867-1381 |
| DOI | 10.5194/amt-13-6325-2020 |
| 通讯作者 | Shi, Zongbo(z.shi@bham.ac.uk) |
| 英文摘要 | Water-soluble inorganic ions such as ammonium, nitrate and sulfate are major components of fine aerosols in the atmosphere and are widely used in the estimation of aerosol acidity. However, different experimental practices and instrumentation may lead to uncertainties in ion concentrations. Here, an intercomparison experiment was conducted in 10 different laboratories (labs) to investigate the consistency of inorganic ion concentrations and resultant aerosol acidity estimates using the same set of aerosol filter samples. The results mostly exhibited good agreement for major ions Cl-, SO, NO, NH and K+. However, F-, Mg2+ and Ca2+ were observed with more variations across the different labs. The Aerosol Chemical Speciation Monitor (ACSM) data of nonrefractory SO, NO and NH generally correlated very well with the filter-analysis-based data in our study, but the absolute concentrations differ by up to 42 %. Cl- from the two methods are correlated, but the concentration differ by more than a factor of 3. The analyses of certified reference materials (CRMs) generally showed a good detection accuracy (DA) of all ions in all the labs, the majority of which ranged between 90 % and 110 %. The DA was also used to correct the ion concentrations to showcase the importance of using CRMs for calibration check and quality control. Better agreements were found for Cl-, SO, NO, NH and K+ across the labs after their concentrations were corrected with DA; the coefficient of variation (CV) of Cl-, SO, NO, NH and K+ decreased by 1.7%, 3.4%, 3.4%, 1.2% and 2.6%, respectively, after DA correction. We found that the ratio of anion to cation equivalent concentrations (AE/CE) and ion balance (anionscations) are not good indicators for aerosol acidity estimates, as the results in different labs did not agree well with each other. In situ aerosol pH calculated from the ISORROPIA II thermodynamic equilibrium model with measured ion and ammonia concentrations showed a similar trend and good agreement across the 10 labs. Our results indicate that although there are important uncertainties in aerosol ion concentration measurements, the estimated aerosol pH from the ISORROPIA II model is more consistent. |
| 资助项目 | Natural Environment Research Council[NE/N007190/1] ; Natural Environment Research Council[NE/S00579X/1] ; Natural Environment Research Council[NE/R005281/1] |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| 出版者 | COPERNICUS GESELLSCHAFT MBH |
| WOS记录号 | WOS:000595528700002 |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/12366]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 通讯作者 | Shi, Zongbo |
| 作者单位 | 1.Univ Birmingham, Sch Geog Earth & Environm Sci, Birmingham B15 2TT, W Midlands, England 2.Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA 3.King Abdulaziz Univ, Ctr Excellence Environm Studies, Dept Environm Sci, POB 80203, Jeddah 21589, Saudi Arabia 4.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing 100029, Peoples R China 5.Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin 300072, Peoples R China 6.Ocean Univ China, Key Lab Marine Environm & Ecol, Minist Educ China, Qingdao 266100, Peoples R China 7.Ocean Univ China, Frontiers Sci Ctr Deep Ocean Multispheres & Earth, Qingdao 266100, Peoples R China 8.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 9.Zhejiang Univ, Sch Earth Sci, Dept Atmospher Sci, Hangzhou 310027, Peoples R China 10.Beijing Normal Univ, State Key Lab Environm Simulat & Pollut Control, Beijing 100875, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Jingsha,Song, Shaojie,Harrison, Roy M.,et al. An interlaboratory comparison of aerosol inorganic ion measurements by ion chromatography: implications for aerosol pH estimate[J]. ATMOSPHERIC MEASUREMENT TECHNIQUES,2020,13(11):6325-6341. |
| APA | Xu, Jingsha.,Song, Shaojie.,Harrison, Roy M..,Song, Congbo.,Wei, Lianfang.,...&Shi, Zongbo.(2020).An interlaboratory comparison of aerosol inorganic ion measurements by ion chromatography: implications for aerosol pH estimate.ATMOSPHERIC MEASUREMENT TECHNIQUES,13(11),6325-6341. |
| MLA | Xu, Jingsha,et al."An interlaboratory comparison of aerosol inorganic ion measurements by ion chromatography: implications for aerosol pH estimate".ATMOSPHERIC MEASUREMENT TECHNIQUES 13.11(2020):6325-6341. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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