Some considerations for the determination of carbonyl compounds in air: Reaction characteristics of formaldehyde with 2.4-DNPH

김기현; 홍윤정

오늘 하루 그만보기

P-ISSN1225-0163
E-ISSN2288-8985
SCOPUS, ESCI, KCI

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P-ISSN 1225-0163
E-ISSN 2288-8985

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Vol.18, No.1

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Some considerations for the determination of carbonyl compounds in air: Reaction characteristics of formaldehyde with 2.4-DNPH

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985

2005, v.18 no.1, pp.43-50

& (2005). Some considerations for the determination of carbonyl compounds in air: Reaction characteristics of formaldehyde with 2.4-DNPH. , 18(1), 43-50.

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Abstract

A number of carbonyl compounds including formaldehyde and acetaldehyde are well known for their toxicity and irritancy. Hence, acquisition of both qualitative and quantitative tool for their analysis is essential to resolve issues associated with malodor or indoor pollution. Using HPLC/UV method, we examined various aspects involved in the measurements of formaldehyde in environmental samples. The results of our analysis indicated that its detection was made as low as 0.5 ppb (assuming 5 L of sample volume), while its precision was maintained near 2% in terms of relative standard error (RSE). When the stability of calibration was checked by variability of slope values obtained over long-term period (e.g., one month), its values were found to remain constantly with RSE values of 3%. It was also found that liquid-phase reaction between formaldehyde and DNPH proceed very slowly to attain equilibrium (one and half hour), while requiring adequate amount of DNPH to form their derivatives. The overall results of our study thus suggest that there are a number of factors to consider for the accurate analysis of formaldehyde in ambient air.