Transcription of An Improved Ion Chromatography Method for …
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An Improved Ion Chromatography Method for …
Air quality monitoring for acetic and formic acid vapours inmuseum galleries and storage environments is commonlyconducted using passive sampling and ion Chromatography (IC). We report development of a rapid IC Method with 2 to60-fold improvement in detection limits for acetate and for-mate. Baseline resolution is achieved in min using anAS11-HC anion exchange column with 4 mM NaOH eluent mL/min flow rate. The detection limits are 12 g/mL( ng) for acetate and 11 g/mL ( ng) for Method was successfully used for air quality monitor-ing in a Los Angeles museum indoor and outdoor air quality requires accurate collection andquantification of volatile organic compounds. Acetic and formic acids arethe most abundant carboxylic acids in the troposphere, having both anth-ropogenic and biogenic Anthropogenic sources include vehicleemissions resulting from incomplete combustion of ethanol-based fuel,3,5-7biomass burning,3,4,6,8industrial heat generation7 and synthetic ,10 Biogenic sources include emissions from vegetation, forests, andoceans,3,4,6,7,11-13photochemical synthesis involving ozone and olef-ins,2,3,6,14-16and secretions from and formicacids have been linked to increased cloud and fog formation,4,17,18incre-ased acidity of rain water.
Air quality monitoring for acetic and formic acid vapours in museum galleries and storage environments is commonly conducted using passive sampling and ion chromatography
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