Show simple item record

dc.creatorXu, Jingsha
dc.creatorSong, Shaojie
dc.creatorHarrison, Roy M.
dc.creatorSong, Congbo
dc.creatorWei, Lianfang
dc.creatorZhang, Qiang
dc.creatorSun, Yele
dc.creatorLei, Lu
dc.creatorZhang, Chao
dc.creatorYao, Xiaohong
dc.creatorChen, Dihui
dc.creatorLi, Weijun
dc.creatorWu, Miaomiao
dc.creatorTian, Hezhong
dc.creatorLuo, Lining
dc.creatorTong, Shengrui
dc.creatorLi, Weiran
dc.creatorWang, Junling
dc.creatorShi, Guoliang
dc.creatorHuangfu, Yanqi
dc.creatorTian, Yingze
dc.creatorGe, Baozhu
dc.creatorSu, Shaoli
dc.creatorPeng, Chao
dc.creatorChen, Yang
dc.creatorYang, Fumo
dc.creatorMihajlidi-Zelić, Aleksandra
dc.creatorĐorđević, Dragana
dc.creatorSwift, Stefan J.
dc.creatorAndrews, Imogen
dc.creatorHamilton, Jacqueline F.
dc.creatorSun, Ye
dc.creatorKramawijaya, Agung
dc.creatorHan, Jinxiu
dc.creatorSaksakulkrai, Supattarachai
dc.creatorBaldo, Clarissa
dc.creatorHou, Siqi
dc.creatorZheng, Feixue
dc.creatorDaellenbach, Kaspar R.
dc.creatorYan, Chao
dc.creatorLiu, Yongchun
dc.creatorKulmala, Markku
dc.creatorFu, Pingqing
dc.creatorShi, Zongbo
dc.date.accessioned2020-12-29T10:56:23Z
dc.date.available2020-12-29T10:56:23Z
dc.date.issued2020
dc.identifier.issn1867-8548
dc.identifier.urihttps://cer.ihtm.bg.ac.rs/handle/123456789/4050
dc.description.abstractWater-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−, SO2−4, NO−3, NH+4 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 SO2−4, NO−3 and NH+4 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−, SO2−4, NO−3, NH+4 and K+ across the labs after their concentrations were corrected with DA; the coefficient of variation (CV) of Cl−, SO2−4, NO−3, NH+4 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 (anions–cations) 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.
dc.publisherCopernicus GmbHen
dc.rightsopenAccess
dc.sourceAtmospheric Measurement Techniquesen
dc.subjection chromatography
dc.subjectpH
dc.subjectammonium
dc.subjectnitrate
dc.subjectsulfate
dc.subjectaerosol acidity
dc.subjectSample analysis
dc.subjectQuality assurance
dc.subjectquality control
dc.subjectinorganic ions
dc.subjection concentrations
dc.titleAn interlaboratory comparison of aerosol inorganic ion measurements by ion chromatography: implications for aerosol pH estimateen
dc.typearticleen
dc.rights.licenseBY
dcterms.abstractХаррисон, Роy М.; Сонг, Цонгбо; Зханг, Qианг; Сун, Yеле; Леи, Лу; Зханг, Цхао; Yао, Xиаохонг; Хан, Јинxиу; Саксакулкраи, Супаттарацхаи; Балдо, Цларисса; Хоу, Сиqи; Зхенг, Феиxуе; Даелленбацх, Каспар Р.; Yан, Цхао; Лиу, Yонгцхун; Кулмала, Маркку; Фу, Пингqинг; Схи, Зонгбо; Wеи, Лианфанг; Xу, Јингсха; Ђорђевић, Драгана; Цхен, Дихуи; Ли, Wеијун; Wу, Миаомиао; Тиан, Хезхонг; Луо, Лининг; Тонг, Схенгруи; Ли, Wеиран; Wанг, Јунлинг; Схи, Гуолианг; Хуангфу, Yанqи; Тиан, Yингзе; Ге, Баозху; Су, Схаоли; Пенг, Цхао; Цхен, Yанг; Yанг, Фумо; Михајлиди-Зелић, Aлександра; Сwифт, Стефан Ј.; Aндреwс, Имоген; Хамилтон, Јацqуелине Ф.; Сун, Yе; Крамаwијаyа, Aгунг; Сонг, Схаојие;
dc.citation.volume13
dc.citation.issue11
dc.citation.spage6325
dc.citation.epage6341
dc.citation.rankM21~
dc.identifier.doi10.5194/amt-13-6325-2020
dc.identifier.fulltexthttp://cer.ihtm.bg.ac.rs/bitstream/id/18562/amt-13-6325-2020.pdf
dc.identifier.scopus2-s2.0-85097419614
dc.identifier.wos000595528700002
dc.type.versionpublishedVersion


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record