Solid sorbent methodology for formaldehyde monitoring

Matthews, T.G.; Howell, Timothy

doi:10.1021/ac00246a011

Cited by 39 publications

(13 citation statements)

References 10 publications

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“…15 The device consists of a 5-g cartridge of 13X molecular sieve sorbent through which the sampled air is pumped at 2 L/min for IS min. A DuPont P2500 or P4000 pump with feedback flow control was used to draw air through the sorbeou Figure 4.3 shows this technique in use at one of the study homes.…”

Section: Pumped Molecular Sieve Samplersmentioning

confidence: 99%

Indoor air quality study of forty east Tennessee homes

Hawthorne¹,

Gammage²,

Dudney³

et al. 1984

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Section: Pumped Molecular Sieve Samplersmentioning

confidence: 99%

Indoor air quality study of forty east Tennessee homes

Hawthorne¹,

Gammage²,

Dudney³

et al. 1984

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“…The collected CH2O was then desorbed with water and analyzed by pararosaniline colorimetric method. 12 Single ACH measurements were performed for one to two hours in the living room. A Miran-80 infrared spectrometer was used to measure the decline of Freon concentration in the houses following injection of the tracer gas.…”

Section: Methodsmentioning

confidence: 99%

Impact of Indoor Environmental Parameters on Formaldehyde Concentrations in Unoccupied Research Houses

Matthews

Fung

et al. 1986

Journal of the Air Pollution Control Association

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“…Solid adsorbent such as Chromosorb or XAD-2 resin coated with 2-benzylaminoethano1 has been used for the collection of airborne aldehydes, followed by extraction of 'benzyloxazolidines' in carbon disulfide and GC-FID analysis [211. Matthews and his coworkers collected HCHO on 13X molecular sieve, desorbed in deionized water and analyzed by a photometric-'pararosaniline' method [22]. Recent sampling methods include the use of 2,4-dinitrophenylhydrazine (DNPH) as an absorbent media.…”

Section: Ambient Air Sampling For Carbonylsmentioning

confidence: 99%

Low Molecular Weight Carbonyls in Large Midwestern Office Buildings

Subramanian

Breuer

Reynolds

2000

International Journal of Environmental Analytical Chemistry

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Airborne carbonyls in large office buildings in the Midwestern United States have been studied both indoors and near the air-intakes environment using HPLC and GCMS methods. Air sampling for carbonyls was conducted using 2.4-dinitrophenylhydrazine coated silica gel cartridges and stainless steel Tenax TAB tubes. 1,3-dinitrobenzene, 2.4-dinitrophenol and 2.4-dinitroaniline were tentatively identified as degradation products of 2.4-dinitrophenylhydrazine by HPLC and GCMS analysis. Performance of the Tenax TAB-GCMS method under field sampling conditions was studied and Tenax TAB data was validated, to estimate the lowest possible concentration of carbonyls in the environment, using a correction term derived from error propagation analysis. Analytical recovery, analytes' breakthrough percentage, and limitations of the DNPH-cartridge sampling are presented along with GCMS ion fragmentation data of the tentatively identified product(s). Carbonyls including formaldehyde (6.8 i 8.8 ppbv)! acetaldehyde (2.8 i 3.2 ppbv), acetone (4.7 i 8.9 ppbv), methyl ethyl ketone (0.4 i 0.7 ppbv), 4-methyl-2-pentanone (0.5 1.7 ppbv). n-hexanal (0.2 i 0.6 ppbv) and n-heptanal (0.2 i 1.8 ppbv) were present in indoor air. Outdoor concentrations were: formaldehyde, 2.1 f 3.1 ppbv; acetaldehyde, 2.2 i 2.4 ppbv; acetone, 1.4 i 3.1 ppbv; methyl ethyl ketone, 0.6 i 0.4 ppbv; 4-methyI-2-pentanone. 0.2 i 0.1 ppbv; n-hexanal. 0.2 i 0.5 ppbv; and n-heptanal (0.2 i 0.4 ppbv). Total carbonyl concentrations (&,,) were 15.6 i 13.2 ppbv and 6.9 i 5.1 ppbv in indoor and outdoor air respectively. Average formaldehyde levels (7ppbv) in non-complaint buildings were lower than the recommended concentration levels in indoors of residential environment ( 100 ppbv). (ng . L-') 24.45 (molecular weight) ppbv =

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Solid sorbent methodology for formaldehyde monitoring

Cited by 39 publications

References 10 publications

Indoor air quality study of forty east Tennessee homes

Indoor air quality study of forty east Tennessee homes

Impact of Indoor Environmental Parameters on Formaldehyde Concentrations in Unoccupied Research Houses

Low Molecular Weight Carbonyls in Large Midwestern Office Buildings

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