was associated with increased disease risk, based on two studies [summary RR = 1.45 (95% CI: 1.08, 1.95)] (Table 3).
Quantitative human health risk assessment for 1,3-butadiene
based upon ovarian effects in rodents.
Following the definition of air toxics relevant for mobile sources, this new version TREM-HAP (Transport Emission Model for Hazardous Air Pollutants) is prepared to calculate the emissions of benzene, 1,3-butadiene
, formaldehyde, acetaldehyde, acrolein, naphthalene and also particulate matter with aerodynamic diameter less than or equal to 2.5 [micro]m (PM2.5).
The following reaction variables were evaluated: DEAC/Nd ratio, reaction temperature, catalyst concentration, and 1,3-butadiene
Henry's constants and infinite dilution activity coefficients of propane, propene, butane, isobutene, 1-butene, isobutane, trans-2-butene and 1,3-butadiene
in 1-propanol at T = (260 to 340) K.
One such genotoxic chemical with variable damaging effects in genetically diverse individuals is 1,3-butadiene
is an industrial chemical that is primarily used in the production of synthetic rubbers and polymers (White 2007); it is a ubiquitous environmental pollutant, is present in both automobile exhaust and cigarette smoke, and is classified as carcinogenic to humans by the World Health Organization/International Association for Research on Cancer (WHO/IARC) (Baan et al.
Chevron Phillips, for example, said that it expected its Cedar Bayou chemical plant to exceed permitted limits for several hazardous pollutants, such as 1,3-butadiene
, benzene and ethylene, during shutdown procedures.
(1998) reports the identification and quantification of 1,3-butadiene
in petrol and evaporative emissions from Australian light-duty passenger vehicles.
The synthesis of TPDB was pursued by examining the polymerization of 1,3-butadiene
using cyclohexane solutions of trioctyl aluminum [Al[([C.sub.8][H.sub.17]).sub.3]], n-butyl lithium (n-([C.sub.4] [H.sub.9])Li), and barium 2-ethyI-hexoxide [(RO).sub.2] Ba.