[Biological limit value for occupational exposure to N, N-dimethylacetamide].

Objective: To establish Biological Limit Value (BLV) for N, N-dimethylacetamide (DMAC).

Method: 201 workers in 3 spandex factories exposed to DMAC were recruited. Air samples were collected using personal air samplers, and urine samples from each works were collected at the end of shift at end of workweek.

[The impact of N, N-dimethylacetamide on the health of workers].

Objective: To explore the hepatic toxicity and the exposure biomarkers of N, N-Dimethylacetamide.

Methods: One hundred forty five objects were chosen by stratified random sampling method. The investigation was performed using questionnaire and physical examination.

[The interventions effect-assessment of the workers exposed to N, N-dimethylformamide by percutaneous in a synthetic leather factory].

Objective: To assess the effects of interventions on synthetic leather workers exposed to N, N-dimethylformamide (DMF) by skin.

Methods: Twenty-six workers exposed to DMF were recruited. The level of DMF in ambient or handwash solution and N-methylformamide (NMF) in end-shift urine samples were detected before interventions and after interventions for six months.

[Determination of trimethyltin chloride in urine by headspace-gas chromatography].

Objective: To establish a detection method for trimethyltin chloride in urine by the Head space-GC.

Method: After derivatizing trimethyltin chloride, the urines was separated by the head space-gc, and then the trimethyltin chloride detected qualitatively and quantificationally.

Results: In the concentration range of 0.

[Investigation on dermal contamination among workers occupationally exposed to dimethylformamide].

Objective: To establish a method for the determination of dimethylformamide (DMF) and investigate dermal contamination and absorption among workers occupationally exposed to DMF.

Method: 37 workers exposed to DMF were divided randomly into two groups. DMF was washed down by isopropyl alcohol in A group (16 workers) and water in B group(21 workers).

[Abnormal liver function associated with polymorphism of GSTT1, GSTM1 and CYP2E1 in workers exposed to N, N-dimethylformamide].

Objective: To investigate abnormal liver function associated with polymorphism of GSTT1, GSTM1 and CYP2E1 in workers exposed to N, N-dimethylformamide.

Methods: Sixty-nine workers with abnormal liver function in a synthetic leather factory were recruited as case. One hundred and twenty five control subjects with similar work tasks were selected from the same factory.

[Biological monitoring of workers exposed to trimethyltin chloride].

Objective: To investigate suitable biomarkers for workers exposure to trimethyltin chloride (TMT-cl).

Methods: Urinary samples of 44 male workers from five TMT-cl occupational poisoning incidents were collected. Methyltin mercaptide stabilizers and waste plastics used in the incidents were also collected.

[Abnormal liver function associated with occupational exposure to N, N-dimethylformamide in synthetic leathers works].

Objective: To investigate the hepatotoxic effects of N, N-dimethylformamide (DMF) in the workers of a synthetic leathers factory, and the effects on liver function of covariates such as alcohol consumption and other factors.

Methods: The workers were classified into three groups (low, high and the control) by the concentration of DMF in workplace which was determined in the past two years. A questionnaire was drawn up for relevant demographic characteristics and other factors influencing liver function.

[PCBs concentrations in human milk collected from a polluted area--exposure risk for feeding infants].

Objective: To determine the concentration of PCBs and the distribution of dioxin-like compounds in human milk collected from a polluted area where discarded electronic equipment is dismantled, and to evaluate the risk for feeding infants.

Methods: The authors collected 20 and 12 milk samples from the polluted area and nearby town, respectively. Milk samples were analyzed for total PCBs (t-PCBs) by gas chromatography, and two mixed milk samples from the two areas were detected the distribution of dioxin-like compounds.