Gas chromatographic-mass spectroscopic determination of benzene in indoor air during the use of biomass fuels in cooking time |
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Authors: | Sinha Sukesh Narayan Kulkarni P K Desai N M Shah S H Patel G M Mansuri M M Parikh D J Saiyed H N |
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Institution: | National Institute of Occupational Health (ICMR), Ahmedabad 380016, Gujarat, India. sukeshnr_sinha@yahoo.com |
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Abstract: | A gas chromatography-mass spectroscopic method in electron ionization (EI) mode with MS/MS ion preparation using helium at flow rate 1 ml min(-1) as carrier gas on DB-5 capillary column (30 m x 0.25 mm i.d. film thickness 0.25 microm) has been developed for the determination of benzene in indoor air. The detection limit for benzene was 0.002 microg ml(-1) with S/N: 4 (S: 66, N: 14). The benzene concentration for cooks during cooking time in indoor kitchen using dung fuel was 114.1 microg m(-3) while it was 6.6 microg m(-3) for open type kitchen. The benzene concentration was significantly higher (p < 0.01) in indoor kitchen with respect to open type kitchen using dung fuels. The wood fuel produces 36.5 microg m(-3) of benzene in indoor kitchen. The concentration of benzene in indoor kitchen using wood fuel was significantly (p < 0.01) lower in comparison to dung fuel. This method may be helpful for environmental analytical chemist dealing with GC-MS in confirmation and quantification of benzene in environmental samples with health risk exposure assessment. |
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Keywords: | Gas chromatography–mass spectroscopy Indoor air Benzene GC–MS MS/MS |
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