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Integrated Method for the Measurement of Trace Atmospheric Bases : Volume 4, Issue 5 (21/09/2011)

By Key, D.

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Book Id: WPLBN0003984522
Format Type: PDF Article :
File Size: Pages 34
Reproduction Date: 2015

Title: Integrated Method for the Measurement of Trace Atmospheric Bases : Volume 4, Issue 5 (21/09/2011)  
Author: Key, D.
Volume: Vol. 4, Issue 5
Language: English
Subject: Science, Atmospheric, Measurement
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Stihle, J., Petit, J., Thomas, M., Bonnet, C., Liu, O., Depernon, L.,...Latimer, R. (2011). Integrated Method for the Measurement of Trace Atmospheric Bases : Volume 4, Issue 5 (21/09/2011). Retrieved from

Description: Oak Crest Institute of Science, Pasadena, California, USA. Nitrogenous atmospheric bases are thought to play a key role in the global nitrogen cycle, but their sources, transport, and sinks remain poorly understood. Of the many methods available to measure such compounds in ambient air, few meet the current need of being applicable to the complete range of potential analytes and fewer still are convenient to implement using instrumentation that is standard to most laboratories. In this work, an integrated approach to measuring trace atmospheric nitrogenous bases has been developed and validated. The method uses a simple acid scrubbing step to capture and concentrate the bases as their phosphite salts, which then are derivatized and analyzed using GC/MS and/or LC/MS. The advantages of both techniques in the context of the present measurements are discussed. The approach is sensitive, selective, reproducible, as well as convenient to implement and has been validated for different sampling strategies. The limits of detection for the families of tested compounds are suitable for ambient measurement applications, as supported by field measurements in an urban park and in the exhaust of on-road vehicles.

Integrated method for the measurement of trace atmospheric bases

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