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 | |
发表期刊 | ATMOSPHERIC ENVIRONMENT |
卷号 | 45期号:1页码:261-265 |
文章类型 | 期刊论文 |
摘要 | 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. |
关键词 | Unsaturated Carbonyls Dnph Cartridge Hplc Acrolein Crotonaldehyde Methacrolein Methyl Vinyl Ketone |
DOI | 10.1016/j.atmosenv.2010.09.042 |
收录类别 | SCI |
语种 | 英语 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/10244 |
专题 | 粉尘与环境研究室 |
通讯作者 | Ho,SSH (Ho, Steven Sai Hang)[1,2] |
作者单位 | 1.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 |
推荐引用方式 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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