Gas chromatographic-mass spectroscopic determination of benzene in indoor air during the use of biomass fuels in cooking time.
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.
Sinha
Sukesh Narayan
SN
National Institute of Occupational Health (ICMR), Ahmedabad 380016, Gujarat, India. sukeshnr_sinha@yahoo.com
Kulkarni
P K
PK
Desai
N M
NM
Shah
S H
SH
Patel
G M
GM
Mansuri
M M
MM
Parikh
D J
DJ
Saiyed
H N
HN
D000388:Air / Q000032:analysis*; D001554:Benzene / Q000032:analysis*; D018533:Biomass; D003296:Cooking; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*
D001554:Benzene