某拉链制造企业甲醛职业接触致癌风险评估

目的 评估某拉链制造企业接触甲醛作业人员致癌风险。
方法 通过对某拉链制造企业塑料拉链车间甲醛浓度的测定, 运用美国环境保护署吸入风险模型, 估算作业人员接触甲醛所增加的致癌风险。
结果 该企业塑料拉链车间树脂切片、注塑、组装岗位均存在甲醛危害, 其中树脂切片岗位甲醛超标率为75%, 岗位最高检测浓度为3.10 mg/m3, 致癌风险为7.97×10-4; 注塑、组装岗位甲醛浓度符合职业接触限值的要求, 致癌风险分别为5.14×10-5和7.07×10-5。
结论 该拉链制造企业甲醛接触人员致癌风险较大, 尤其树脂切片岗位致癌风险高, 应采取更多措施以减少甲醛接触。

Cancer risk assessment of formaldehyde exposure in a zipper plant

Objective The cancer risk of formaldehyde exposure in a zipper plant was assessed. Methods The airborne concentration of formaldehyde in the workplace was determined according to the national guideline, and the cancer risk of the exposed workers was assessed by using EPA inhalation risk model. Results In the workshop of plastic zipper, workers exposed to formaldehyde at worksites of resin cutting section, injection molding and assembly post. The highest concentration of formaldehyde at resin cutting section was 3.10 mg/m3 and 75% samples was higher than OELs. The calculated cancer risk was 7.97×10-4. The formaldehyde concentration at injection modeling and assembly post was lower than the OELs, while the calculated cancer risk was 5.14×10-5 and 7.07×10-5. Conclusion The cancer risk induced by formaldehyde in the zipper plant was highly increased, especially in resin cutting section. More measures should be taken to control such exposure.