Volatile organic compounds in air

Many of the commercial applications of semiconductor photocatalysis involve the oxidative breakdown of organic pollutants in aqueous solution or of volatile organic compounds in air by oxygen, a process called photomineralisation. 

Yamashita S, Ozawa R, Yamaguchi K, et al. 1992. Analysis of volatile organic compounds in air by gas chromatography with thermal desorption cold- trap injection and atomic emission and mass selective detection. Journal of High Resolution Chromatography 15 549-551. 

Cao, X.-L., and C. N. Hewitt, Build-up of Artifacts on Adsorbents during Storage and Its Effect on Passive Sampling and Gas Chromatography-Flame Ionization Detection of Low Concentrations of Volatile Organic Compounds in Air, . /. Chromatogr. A, 688, 368-374 (1994). 

Helmig, D "Artifact-Free Preparation, Storage, and Analysis of Solid Adsorbent Sampling Cartridges Used in the Analysis of Volatile Organic Compounds in Air, J. Chromatogr. A, 732, 414-417 (1996). 

McCaffrey, C. A., J. MacLachlan, and B. I. Brookes, Adsorbent Tube Evaluation for the Preconcentration of Volatile Organic Compounds in Air for Analysis by Gas Chromatography-Mass Spectrometry, Analyst, 119, 897-902 (1994). 

A flow-type photochemical reaction system (Fig. 8.4) was developed for studying toluene photochemical reactions in the presence of Ti02 with/without 02, H20 or NO, because toluene is the most abundant volatile organic compound in air, and Ti02 has such a remarkable photocatalytic activity as mentioned above and is present in airborne and soil particles at an order of about 1 %. 

Helmig, D. (1996) Artefact-free preparation, storage and analysis of solid adsorbent sampling cartridges used in the analysis of volatile organic compounds in air. Journal of Chromatography A, 732, 414-17. 

Rothweiler, H., Wager, P.A. and Schlatter, C. (1990) Comparison of Tenax TA and Carbotrap for sampling and analysis of volatile organic compounds in air. Atmospheric Environment, 25B (2), 231-5. 

HSE (1995) Volatile Organic Compounds in Air-Laboratory Method Using Diffusive Solid Sorbent Tubes, Thermal Desorption and Gas Chromatography, MDHS 80, Health and Safety Executive, Bootle, UK. 

S.B. Kim, S.C. Hong, Kinetic study for photocatalytic degradation of volatile organic compounds in air using thin film TiC>2 photocatalyst, Appl. Catal. B Environ. 35 (2002) 305-315. 

ASTM International (2003e). D 6345, Standard guide for selection of methods for active, integrative sampling of volatile organic compounds in air. Annual Book of ASTM Standards, Vol. 11.03, American Society for Testing and Materials, West Conshohoken, PA, USA (website http //www.astm.org). 

Ras, M.R., Marce, R.M., Bormll, F. Volatile organic compounds in air at urban and industrial areas in the Tarragona region by thermal desorption and gas chromatography-mass spectrometry. Environ. Monit. Assess. 161, 3894 02 (2010)... 

Tuduri, L., Desauziers, V., and Fanlo, J. L., Dynamic versus static sampling for the quantitative analysis of volatile organic compounds in air with polydimethylsiloxane-carboxen solid-phase microextraction hbers, J. Chromatogr. A, 963, 49-56, 2002. 

For GC analysis, HS is a preconcentration technique particularly suitable for the sampling of volatile organic compounds in air, water, and solids. Few reports have been published on the use of static headspace in the analysis of free amines in aqueous samples because of the high polarity and solubility in water of these compounds." In one experiment," static headspace preconcentration was developed for the gas chromatographic analysis of aliphatic amines in aqueous samples. A liquid-gas ratio of 1, an incubation temperature of 80°C (15 min), a pH of 13.7, and a mixture of salts (NaCl and K2SO4) at saturation concentration gave a maximal headspace amine concentration (Table 11.4). 

Three general types of solid sorbents are mainly used for trapping volatile organic compounds in air inorganic sorbents, porous materials based on carbon and organic polymers. Table 1.1-1 shows some properties of common sorbents. 

Cisper, M.E. Gil, C.G. Townsend, L.E. Hemberger, P.H. Online detection of volatile organic compounds in air at parts-per-triflion levels by membrane introduction mass spectrometry. Anal. Chem. 1995, 67, 1413-1417. 

Kolb, B. Quantitative trace analysis of volatile organic compounds in air, water and soil using equilibrium headspace gas chromatography. LC-GC (Magazine of Separation Science) 1996,14 (1), 44-54. 

The Detemiination of Volatile Organic Compounds in Air Using Adsorbents and Gas Chromatography... 

SM Gordon, PJ Callahan, DV Kenny, JD Pled. Direct sampling and analysis of volatile organic compounds in air by membrane introduction and glow discharge ion trap mass spectrometry with filtered noise fields. Rapid Commun Mass Spectrom 10 1038-1046, 1996. 

Warneke, C., de Gouw, J. A., Lovejoy, E. R. et al. (2005) Development of proton-transfer ion trap-mass spectrometry on-line detection and identification of volatile organic compounds in air. / Am. Soc. Mass Spectrom. 16, 1316. 

Tanimoto, H., Aoki, N., Inomata, S. et al. (2007) Development of a PTR-TOFMS instrument for real-time measurements of volatile organic compounds in air. Int. J. Mass Spectrom. 263,1. 

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