Document Detail

Simultaneous determination of formic acid and lower carbonyls in air samples by DNPH derivatization.
MedLine Citation:
PMID:  17683040     Owner:  NLM     Status:  MEDLINE    
The classical derivatization method of carbonyls based on 2,4-dinitrophenylhydrazine (DNPH)-coated silica cartridges was tested to concurrently measure lower carbonyls and carboxylic acids in air samples. The performance of these cartridges with respect to formic and acetic acids was evaluated in a number of laboratory measurements on collection and reaction efficiencies. The results showed that HCOOH appeared to have been efficiently collected and derivatized (at 80 degrees C for 8 h) up to air-flow rates of 350 mL/min, while CH(3)COOH was almost completely lost from the cartridge above 100 mL/min. Also due to the high LOD of HCOOH (0.8 microg/m(3)) for 120 L of air sampled during 8 h, the DNPH method might be used only in indoor environments polluted by formic acid as well as carbonyls.
Massimiliano Possanzini; Giorgio Tagliacozzo; Angelo Cecinato
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of separation science     Volume:  30     ISSN:  1615-9306     ISO Abbreviation:  J Sep Sci     Publication Date:  2007 Oct 
Date Detail:
Created Date:  2007-10-08     Completed Date:  2008-01-09     Revised Date:  2009-11-19    
Medline Journal Info:
Nlm Unique ID:  101088554     Medline TA:  J Sep Sci     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  2460-5     Citation Subset:  IM    
Istituto Inquinamento Atmosferico CNR, Monterotondo Scalo, Rome, Italy.
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MeSH Terms
Acetic Acids / chemistry
Air Pollutants / analysis
Carbon / chemistry
Carboxylic Acids / chemistry
Chemistry Techniques, Analytical / methods*
Chromatography / methods
Chromatography, High Pressure Liquid / methods
Formic Acids / analysis*,  chemistry
Mass Spectrometry / methods
Silicon Dioxide / analysis*,  chemistry
Spectrophotometry, Ultraviolet / methods
Time Factors
Reg. No./Substance:
0/Acetic Acids; 0/Air Pollutants; 0/Carboxylic Acids; 0/Formic Acids; 64-18-6/formic acid; 7440-44-0/Carbon; 7631-86-9/Silicon Dioxide

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