title: A chemical potential driven micro-membrane sampler and its application for the determination of trace carbonyl compounds in air.
abstract: A chemical potential driven micro-membrane sampler for enrichment of trace gaseous carbonyl compounds has been developed. The sampler is composed of exposed parts with membrane and analysis parts with polypropylene tube. The membrane acts as a barrier, through which the analytes dynamically diffuse and transfer from absorbents present outside to extract solvent inside through the difference of chemical potential. Formaldehyde and acetic acid were selected as verification samples. Quantification is achieved through high performance liquid chromatography (HPLC) analysis. The mass of analytes determined shows a linear correlation with concentration of the gaseous analytes. The limits of detection of formaldehyde and acetic acid after 8h sampling were 3.32 and 0.76 μg m(-3).
authors.affiliation: Key Laboratory for Advanced Materials and Research Centre of Analysis Test, East China University of Science and Technology, 130 Meilong Rd, Shanghai 200237, PR China. luoxiyun@163.com
authors.forename: Xiyun
authors.initials: X
authors.lastname: Luo
authors.forename: Yu
authors.initials: Y
authors.lastname: Wang
authors.forename: Lingyi
authors.initials: L
authors.lastname: Zhang
authors.forename: Gengen
authors.initials: G
authors.lastname: He
authors.forename: Weibing
authors.initials: W
authors.lastname: Zhang
authors.forename: Yiping
authors.initials: Y
authors.lastname: Du
mesh_terms: D019342:Acetic Acid / Q000032:analysis; D000388:Air / Q000032:analysis*; D000393:Air Pollutants / Q000032:analysis*; D000447:Aldehydes / Q000032:analysis*; D002851:Chromatography, High Pressure Liquid / Q000295:instrumentation / Q000379:methods; D004784:Environmental Monitoring / Q000295:instrumentation / Q000379:methods; D005557:Formaldehyde / Q000032:analysis; D006863:Hydrogen-Ion Concentration; D057230:Limit of Detection; D008567:Membranes, Artificial; D008956:Models, Chemical; D016062:Porosity; D013499:Surface Properties; D014835:Volatilization
chemical_list: D000393:Air Pollutants; D000447:Aldehydes; D008567:Membranes, Artificial; D005557:Formaldehyde; D019342:Acetic Acid