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KMID : 0385520100230050446
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Analytical Science & Technology
2010 Volume.23 No. 5 p.446 ~ p.456
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Comparison of recovery rates of DNPH-Cartridge sampler in the analysis of odorous carbonyl compounds
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Hong One-Feel
Lim Sung-Min
Kim Ki-Hyun
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Abstract
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In this study, the performance characteristics of DNPH sampling were investigated in the collection and analysis of 5 carbonyl compounds (CC) in air using the cartridge products produced by three different makers. For these experiments, gaseous standards of 5 CCs were prepared to cover 9 concentration levels for each compound (33~2600 n㏖). Some cartridge products exhibited relatively high blank values of acetaldehyde (AA) and propionaldehyde (PA). The recovery rates of all three cartridges showed moderate reduction as the molecular weight of CC increased. In addition, when the recovery rate was compared by percent error (%), the most stable patterns were achieved in the intermediate concentration range of 263~1312 n㏖ (in case of AA). The overall results of our study suggest that the optimal range of recovery for a given concentration range should be considered to obtain the most reliable data for the DNPH cartridge method.
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KEYWORD
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DNPH cartridge, carbonyl compounds, recovery rate
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