Biological monitoring of occupational ethylbenzene exposure by means of urinalysis for un-metabolized ethylbenzene

Promising biological monitoring for occupational 1,2-Dichloropropane exposure by urinalysis for unmetabolized solvent.

OBJECTIVES The aim of this study was to examine the applicability of urinalysis for unmetabolized solvent to biomonitor 1,2-dichloropropane (1,2-DCP) exposure. METHODS Thirty three male printers exposed to 1,2-DCP and 5 nonexposed male controls participated in the study. The 8-hr average levels of exposure to 1,2-DCP in air and 1,2-DCP in the end-of-shift urine samples were measured with capi...

Toxicological Profile for Ethylbenzene

Mechanism of ethylbenzene-induced mouse-specific lung tumor: metabolism of ethylbenzene by rat, mouse, and human liver and lung microsomes.

This study was conducted to determine species differences in the metabolism of ethylbenzene (EB) in liver and lung. EB (0.22-7.0mM) was incubated with mouse, rat and human liver and lung microsomes and the formation of 1-phenylethanol (1PE), acetophenone (AcPh), 2-ethylphenol (2EP), 4-ethylphenol (4EP), 2,5-ethylquinone, and 3,4-ethylquinone were measured. Reactive metabolites (2,5-dihydroxyeth...

Biological monitoring of occupational exposure to tetrahydrofuran.

Occupational exposure to tetrahydrofuran (THF) was studied by analysis of environmental air, blood, alveolar air, and urine from 58 workers in a video tape manufacturing plant. Head space gas chromatography (GC) with an FID detector was used for determination of THF concentration in alveolar air, urine, and blood. Environmental exposure to THF was measured by personal sampling with a carbon fel...

Disproportionation of Ethylbenzene over Sapo-40

SAPO-40, a silicoaluminophosphate with a structure not topologically related with any aluminosilicate zeolite, was synthesised for the first time in 1984 by Lok and co-workers [1]. Recently, a synthesis procedure leading to pure SAPO40 was developed and the structure of this material was established by crystallographic methods. The framework topology (designated AFR by the International Zeolite...