A chemical potential driven micro-membrane sampler and its application for the determination of trace carbonyl compounds in air.
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).
Luo
Xiyun
X
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
Wang
Yu
Y
Zhang
Lingyi
L
He
Gengen
G
Zhang
Weibing
W
Du
Yiping
Y
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
D000393:Air Pollutants; D000447:Aldehydes; D008567:Membranes, Artificial; D005557:Formaldehyde; D019342:Acetic Acid