It is a carcinogen, endocrine disruptor, and potentially neurotoxic. Our objectives were to characterize exposure of adult office workers (n = 29) to TDCPP by measuring its primary metabolite, bis(1,37dichloro-2-propyl) phosphate (BDCPP), in their urine; measuring TDCPP in dust from their homes; offices and vehicles; and assessing possible predictors of exposure. We identified TDCPP https://www.selleckchem.com/products/Gefitinib.html in 99% of dust (GM = 4.43 mu g/g) and BDCPP in 100% of urine samples (GM = 408 pg/mL). Concentrations of TDCPP were significantly higher in dust from vehicles (GM = 12.5 mu g/g) and offices (GM = 6.06 mu g/g) than in dust from the main living area (GM = 4.21 mu
g/g) or bedrooms (GM = 1.40 mu g/g) of worker homes. Urinary BDCPP concentrations among participants who worked in a new office building were 26% of those who worked in older buildings (p = 0.01). We found some evidence of a positive trend between urinary BDCPP and TDCPP in office dust that was not observed in the other microenvironments and may be related to the timing of urine sample collection during the afternoon of a workday. Overall our findings suggest that exposure to TDCPP in the work environment is one of the contributors to the personal exposure for office workers. Further research is needed to confirm specific exposure sources (e.g.,
polyurethane foam), determine the BIX 01294 chemical structure importance of exposure in other microenvironments such as homes and vehicles, and address the inhalation and dermal exposure pathways. (C) 2013 Elsevier Ltd. All rights
“Modification of BiFeO3 multiferroic ceramics were investigated by introducing NaNbO3 to form (Bi1-xNax)(Fe1-xNbx)O-3 (x=0.1, 0.3, and 0.5) solid solutions. With increasing NaNbO3 content, the crystalline structure changed and the ferroelectric properties were improved. The significantly reduced leakage resulted in more regular ferroelectric hysteresis loop for all compositions. Dielectric characteristics learn more of (Bi1-xNax)(Fe1-xNbx)O-3 (x=0.1, 0.3, and 0.5) ceramics were evaluated. Two dielectric relaxations were observed in the temperature ranges of 550-600 and 650-710 K in (Bi0.9Na0.1)(Fe0.9Nb0.1)O-3 ceramics, and the higher-temperature dielectric relaxation was related to the antiferromagnetism transition, which indicated the coupling between the ferroelectric and magnetic orders essential for the multiferroic materials. Moreover, weak ferromagnetism with remnant magnetization (M-r) of 0.14 emu/g and coercive field (H-c) of 6.48 kOe were observed in the sample with x=0.1, which suggested that the present modified ceramics had enhanced multiferroic characteristics.”
“There are only few studies documenting indoor pollution in the Middle East and the Indian subcontinent. In present study, we have evaluated the occurrence of various organochlorines (OCs) and flame retardants (FRs) in dust from cars and houses of Pakistan and Kuwait.