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Unsuitability of using the DNPH-coated solid sorbent cartridge for determination of airborne unsaturated carbonyls
Ho,SSH (Ho, Steven Sai Hang)[1,2]; Ho,KF (Ho, K. F.)[1]; Liu,WD (Liu, W. D.)[3]; Lee,SC (Lee, S. C.)[3]; Dai,WT (Dai, W. T.)[1]; Cao,JJ (Cao, J. J.)[1]; Ip,HSS (Ip, H. S. S.)[2]
2011-01-30
Source PublicationATMOSPHERIC ENVIRONMENT
Volume45Issue:1Pages:261-265
Subtype期刊论文
Abstract

Measurements of aldehydes and ketones are typically conducted by derivatization using sorbent cartridges coated with 2,4-dinitrophenylhydrazine (DNPH). The collected samples are eluted with acetonitrile and analyzed by high-pressure liquid chromatography coupled with an ultra-violet detector (HPLC/UV). This paper intends to examine artifacts about its suitability in identification of unsaturated carbonyls. Kinetic tests for acrolein, crotonaldehyde, methacrolein and methyl vinyl ketone (MVK) showed formations of carbonyl-DNP-hydrazone during sampling, which could further react with DNPH, resulting in undesired UV absorption products [e.g., carbonyl-DNP-hydrazone-DNPH (dimer) and 2 (carbonyl-DNP-hydrazone)-DNPH (trimer)]. The dimerization and trimerization occurred for acrolein and MVK whereas only dimerization for crotonaldehyde and methacrolein. The polymerization products undoubtedly affect the integrity of the chromatogram, leading to misidentification and inaccurate quantification. Whether precautions taken during sampling and/or sample treatment could avoid or minimize this artifact has not been thoughtfully investigated. More often, such artifacts are usually overlooked by scientists when the data are reported.

KeywordUnsaturated Carbonyls Dnph Cartridge Hplc Acrolein Crotonaldehyde Methacrolein Methyl Vinyl Ketone
DOI10.1016/j.atmosenv.2010.09.042
Indexed BySCI
Language英语
Citation statistics
Cited Times:41[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/10244
Collection粉尘与环境研究室
Corresponding AuthorHo,SSH (Ho, Steven Sai Hang)[1,2]
Affiliation1.SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710075, China;
2.Hong Kong Premium Services and Research Laboratory, Chai Wan, Hong Kong, China;
3.Research Center of Urban Environmental Technology and Management, Department of Civil and Structural Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon,Hong Kong, China
Recommended Citation
GB/T 7714
Ho,SSH ,Ho,KF ,Liu,WD ,et al. Unsuitability of using the DNPH-coated solid sorbent cartridge for determination of airborne unsaturated carbonyls[J]. ATMOSPHERIC ENVIRONMENT,2011,45(1):261-265.
APA Ho,SSH .,Ho,KF .,Liu,WD .,Lee,SC .,Dai,WT .,...&Ip,HSS .(2011).Unsuitability of using the DNPH-coated solid sorbent cartridge for determination of airborne unsaturated carbonyls.ATMOSPHERIC ENVIRONMENT,45(1),261-265.
MLA Ho,SSH ,et al."Unsuitability of using the DNPH-coated solid sorbent cartridge for determination of airborne unsaturated carbonyls".ATMOSPHERIC ENVIRONMENT 45.1(2011):261-265.
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