Occupational hazard risk assessment with Singapore exposure semi -quantitative evaluation methods in energy -saving lamp industry / 预防医学

Objective To explore and establish an appropriate occupational risk assessment model for energy -saving lamp industry in China,and further to provide reference for risk management.Methods Based on actual conditions on site of 3 different scale energy -saving lamp manufacture factories,Singapore exposure semi -quantitative evaluation methods was used to analyze and evaluate the harm of the work sites contacted with chemical factors,according to which can provide a proposal for risk management.Results The primary occupational chemical hazards in these 3 factories include carbon monoxide,carbon dioxide,aluminium oxide dust,butyl acetate,mercury metal(vapor)and cement dust(free SiO2 <10%).Mercury -injecting of the big scale one has medium risk besides all work sites have low risks or below.Conclusion This methods has confirmed the actual risk levels of the work sites,using the test data in work place,but has a shortage while the sites contacted with physical agents such as noise and heat.

Hexavalent chromium pollution and exposure level in electroplating workplace / 中华劳动卫生职业病杂志

<p><b>OBJECTIVE</b>To investigate the pollution of hexavalent chromium in the electroplating workplace and screen the biomarkers of chromium exposure.</p><p><b>MATERIAL</b>Field occupational health investigation was conducted in 25 electroplating workplaces. 157 electroplating workers and 93 healthy unexposed controls were recruited. The epidemiological information was collected with face to face interview. Chromium in erythrocytes was determined by graphite furnace atomic absorption spectrophotometer.</p><p><b>RESULTS</b>The median of short-term exposure concentration of chromium in the air at electroplating workplace was 0.06 mg/m(3) (median) and ranging from 0.01 (detect limit) to 0.53 mg/m(3)). The median concentration of Cr (VI) in erythrocytes in electroplating workers was 4.41 (2.50 ∼ 5.29) µg/L, which was significantly higher than that in control subjects [1.54 (0.61 ∼ 2.98) µg/L, P < 0.01]. After stratified by potential confounding factors such as gender, age, smoking status and alcohol consumption, significant differences still existed between electroplating workers and control subjects, except for the subjects of age less than 30 years old (P = 0.11).</p><p><b>CONCLUSION</b>There was hexavalent chromium pollution in electroplating workplace. Occupational hazards prevention measures should be taken to control the chromium pollution hazards.</p>