A static capillary gas chromatographic method using three different detectors [photoionization detector (PID), electron capture detector (ECD) and flame ionization detector (FID)] switched in series is presented for the determination of volatile organic compounds (VOCs) in sub microgram l-1 levels. The method was applied for the analysis of selected environmentally and occupationally relevant n...

air quality inside commuting vehicles has seldom been evaluated in iran. accordingly, this study investigates the levels of benzene, toluene, ethylbenzene and xylene (btex) during workdays characterized by heavy traffic inside taxis in tehran- iran between may 2009 and october 2010. the totals of 35 personal samples were collected onto solid sorbent tubes and the concentration of volatile organ...

abstractthe oldest method for the managing of the illness is the use of medicinal plants. the use of herbal products as the first choice in self-treatment of minor conditions continues to expand rapidly across iran. this makes the safety of herbal products an important public health issue.pesticides are used widely in agriculture to increase the production by controlling the harmful insects and...

in the present study the volatile organic compounds of e. azerbaijanica rech.f. were identified. phytochemical assessment of meoh extract of aerial parts of this plant was also performed and its free radical scavenging properties was evaluated. the essential oil of the air-dried aerial parts was obtained by hydro-distillation using a clevenger type apparatus. the oil was then analyzed by gas ch...

the aim of this study was evaluation of phytochemical components, antioxidant activity, and antibacterial effects of basil (ocimum basilicum l.) essential oil (beo) in vitro. the lipid oxidation of the meat and antibacterial effects of beo were also evaluated in beef burger product. in this empirical study, essential oil of the basil was isolated by hydrodistillation. then, beo was analyzed by ...

Introduction. Polybrominated diphenyl ethers (PBDEs) are currently the most widely studied class of additive brominated flame retardants (BFRs) that have been shown to bioaccumulate in wildlife and humans (Hites 2004). There are an increasing number of reports on PBDEs in top predator avian species (Norstrom et al. 2002; Verreault et al. 2005; McKinney et al. 2006). Specifically, the North Amer...