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OBJECTIVE The work aimed to study the potential correlation between the high-level benzene exposure and its urinary metabolites S-phenylmercapturic acid (SPMA) and trans, trans-muconic acid (t,t-MA) in Chinese shoe-making workers. METHODS Individual benzene-exposed levels were determined by gas chromatography analysis, urinary t,t-MA, and urinary SPMA(More)
OBJECTIVE This study analyzed the level of urinary S-phenylmercapturic acid (U-SPMA) for low benzene exposure in a group of Chinese shoe-making workers. METHODS Urinary samples from 55 workers exposed to benzene at levels lower than 10 parts per million (ppm) were collected at postshift. U-SPMA level was determined using high-performance liquid(More)
OBJECTIVE To investigate the possible effects on nervous system and health condition under the exposure to electromagnetic field. METHODS Take the resident around the power transmission line as the objects and were divided into 3 groups by the distance from the power transmission line 20 m, 100 m and 500 m, respectively. Some living conditions and health(More)
OBJECTIVE To investigate the effects of Hg2+ on voltage-dependent calcium channels and intracellular free calcium in trigeminal ganglion neurons of rats and explore the toxicity mechanism of Hg2+ on these neurons. METHODS Whole cell patch-clamp technique was used to determine ICa of voltage-dependent calcium channels in trigeminal ganglion neurons of(More)
OBJECTIVE To evaluate the effect of condiments fortified with sodium iron ethylenediaminetetraacetate (NaFe-EDTA) on the prevention and treatment of anemia. METHODS The randomized controlled trials about condiments fortified with NaFe-EDTA on the prevention and treatment of anemia were collected in such databases as The Cochrane Library, MEDLINE, EMbase,(More)
OBJECTIVE To establish health protection zone standards for petroleum processing industry. METHODS The intensity of characteristic pollutants from fugitive emission were estimated by the inverse method of ground concentration through field survey and monitoring for representative petroleum processing industry, which was calculated health protection zone(More)
OBJECTIVE To establish the method to determine S-phenylmercapturic acid (S-PMA) in human urine, and the method was actually applied to determine S-PMA concentrations in the human urine from subjects occupationally exposed to benzene. METHODS After the urine samples are hydrolyzed by acidification, and modulated to suitable pH value. S-PMA is obtained by(More)
The abundant production of methyl tert-butyl ether (MTBE) and its widespread use have led to an increase in the potential for human exposure. This work described a simple, fast, sensitive, reliable and low-cost method for the simultaneous measurement of MTBE and its metabolite, tert-butyl alcohol (TBA) in human serum by headspace solid-phase microextraction(More)