No abstract available.
Incheon* ; Trichloroethylene*

Trichlorethylene (TCE) is a widely used organic solvent and an important industrial material. It's easily released into the environment through manufacture, use and disposal process, so there is a wide range of occupationally and environmentally exposed population. Based on accumulated research data, International Agency for Research on Cancer (IARC) increased the carcinogenic rating of TCE from probable human carcinogen to certain human carcinogen in 2012. This paper is a review of the carcinogenic effects of TCE and its metabolites from the aspects of epidemiological data, experimental evidence on animals as well as the mechanisms of carcinogenesis.
Animals ; Carcinogens ; Humans ; Trichloroethylene

No abstract available.
Occupational Exposure* ; Trichloroethylene*

Dermatitis, Occupational ; etiology ; Humans ; Trichloroethylene

Humans ; Skin ; pathology ; Trichloroethylene ; poisoning

Dermatitis, Occupational ; etiology ; Humans ; Trichloroethylene ; poisoning

Trichloroethylene (TCE) is a widely used organic solvent and an important industrial material. It can be absorbed into the body through respiratory tract and skin, and cause occupational hazards. The acute hazard induced by TCE is occupational medicamentosa-like dermatitis. Epidemiological data showed that long-term occupational exposure to TCE could also increase the risk of cancer and cause damage to reproductive system and nervous system. Thus, it is of great significance to strengthen the prevention of occupational TCE health hazards. In this paper, the health hazards and preventive measures of TCE are reviewed.
Humans ; Neoplasms ; Occupational Exposure ; Occupational Health ; Trichloroethylene

No abstract available.
Animals ; Ethanol* ; Metabolism* ; Phenobarbital* ; Rats* ; Trichloroethylene*

Objective: To understand the volatile organic components in the organic solvents used by enterprises in Baoan District, Shenzhen. Methods: From January to December 2020, a total of 541 organic solvent samples used by 86 companies were collected for volatile organic component analysis, and the main volatile components and high-risk occupational hazards in organic solvents used in different industries were analyzed. Results: A total of 201 volatile organic components were detected in 541 organic solvents. The top 5 components detected include xylene (29.76%, 116/541), toluene (21.81%, 118/541), methanol (20.70%, 112/541), n-hexane (14.79%, 80/541) and ethylbenzene (14.23%, 77/541). The detection rates of benzene, trichloroethylene, n-hexane, and 1, 2-dichloroethane, which were high-risk occupational hazards, were 2.40% (13/541), 3.70% (20/541), 14.79% (80/541), and 1.66% (9/541), respectively. The volatile components in organic solvents used in different industries was different. Benzene is more frequently detected in organic solvents used in the printing industry, trichloroethylene was more frequently detected in organic solvents used in the electronics industry, and n-hexane was more commonly found in organic solvents used in the electronics industry, printing and other industries, and 1, 2-dichloroethane has been more frequently detected in organic solvents used in the machinery industry. Conclusion: There are many types of organic solvents used by enterprises in Bao'an District, with complex components and differences in different industries.
Benzene/analysis* ; Hexanes ; Solvents ; Industry ; Trichloroethylene

OBJECTIVETo investigate the biodegradation of tetrachloroethylene (PCE) using methanol as electron donor by acclimated anaerobic sludge.

METHODSHP-6890 gas chromatograph (GC), together with HP-7694 autosampler, was used to analyze the concentration of PCE and intermediates.

RESULTSPCE could be decholrinated reductively to DCE via TCE, and probably further to VC and ethylene. The degradation of PCE and TCE conformed to first-order reaction kinetics. The reaction rate constants were 0.8991 d(-1) and 0.068 d(-1), respectively, and the corresponding half-life were 0.77 d and 10.19 d, respectively. TCE production rate constant was 0.1333 d(-1), showing that PCE was degraded more rapidly than TCE.

CONCLUSIONMethanol is an electron donor suitable for PCE degradation and the cometabolic electron donors are not limiting factors for PCE degradation.