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Capillary electrophoresis determinative and GC‐MS confirmatory method for water‐soluble organic acids in airborne particulate matter and vehicle emission by Ewa Dabek‐Zlotorzynska; Rocio Aranda‐Rodriguez; Lisa Graham is a Chemistry article available to read on EtoBox.

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Capillary electrophoresis determinative and GC-MS confirmatory method for water-soluble organic acids in airborne particulate matter and vehicle emission Urban fine airborne particulate matter (PM 2.5 ) and vehicle emission samples were studied for water-soluble low-molecular-weight carboxylic acids using CE with indirect UV detection. Further identification of these acids was achieved using GC-MS as their butyl esters (after derivatization with BF 3 /butanol). Several dicarboxylic acids in the range C 2 -C 10 including straight-chain, branched-chain, cis-and trans-unsaturated, and aromatic acids were confirmed by GC-MS. In addition, aromatic acids such as benzoate, phthalate, terephthalate, isophthalate, and 4-methylphtalate were present in such samples, but some of these were not well resolved by the used CE method. Oxocarboxylic acids (C w n with n A 4) were also identified by GC-MS but not determined by CE due to lack of standards. The rapidity and simplicity of the CE method were clearly demonstrated, and the method was observed to be advantageous for routine monitoring of water-soluble organic acids in airborne PM 2.5 and vehicle emission at low lg/L levels.

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Author

Ewa Dabek‐Zlotorzynska; Rocio Aranda‐Rodriguez; Lisa Graham

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Ltd.; Wiley (ISSN 1615-9306)

Published

2005

Language

EN

Field

Chemistry (Physical Sciences)