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Please use this identifier to cite or link to this item: http://repositorio.ufba.br/ri/handle/ri/14921

Title: A comprehensive and suitable method for determining major ions from atmospheric particulate matter matrices
Other Titles: Journal of Chromatography A
Authors: Domingos, José S. S.
Regis, Ana Carla Dias
Santos, João Victor da Silva
Andrade, Jailson Bittencourt de
Rocha, Gisele Olímpio da
Keywords: Major ions;Water soluble species;Water soluble organic compounds;Ion chromatography;Atmospheric particulate matter;Environmental samples
Issue Date: 2012
Abstract: The present study proposes an analytical methodology that employs ion chromatography–conductivity detection for simultaneous quantification of inorganic (F−, Cl−, NO3−, SO42−, and PO3−), monocarboxylate (HCOO−, CH3COO−, propionate, n-butyrate, lactate, and pyruvate), dicarboxylate (oxalate and succinate), and tricarboxylate anions (citrate), as well as crustal cations (Li+, Na+, K+, NH4+, Ca2+, Mg2+) at low pg m−3 range in airborne particle samples in one single run. The optimized conditions for anions were as follows: 0.6 mmol L−1 KOH for 0–14 min, 0.6–15 mmol L−1 KOH 14–20 min, 15–38 mmol L−1 KOH during 20–32 min and finally returned to 0.6 mmol L−1 for a period of 3 min, thereafter the eluent flow rate was 0.38 mL min−1. Similarly, for cations, isocratic elution was adjusted to 0.36 mL min−1 at 17.5 mmol L−1 H2SO4. LOD ranged 3.0–130 pg m−3 and LOQ was within 10–400 pg m−3 (Li+ and PO43−, respectively) as well as recoveries ranged 89% (Ca2+) to 120% (Li+). Major ions were successfully determined in real PM1 and PM2.5 samples. The method used here was found to be a comprehensive, simple, cheap and reliable procedure for studying ions in particulate matter (PM) samples even those from remote areas or near ecosystem natural conditions.
Description: Texto completo: acesso restrito. p. 17–23
URI: http://repositorio.ufba.br/ri/handle/ri/14921
ISSN: 0021-9673
Appears in Collections:Artigos Publicados em Periódicos (Quimica)

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