PAHs exposure and occupational health risk assessment of workers in coal tar pitch factory

正Objective To investigate industrial sites involving coal tar pitch to detect PAHs in the occupational environment and to assess their occupational health risks to workers.Methods Coal tar pitch enterprises were taken as the research object to investigate the occupational health field.High performance liquid chromatography(HPLC)was performed in 16 PAHs samples to analyze     

煤焦油沥青接触工人多环芳烃接触及职业健康风险评估

目的对涉及煤焦油沥青的工业场所进行调查,检测工人所处职业环境中的PAHs含量并评估其对工人产生的职业健康风险。方法以煤焦油沥青使用企业为研究对象,对其进行职业卫生现场调查与检测,用高效液相色谱法检测样本中的16种PAHs,分析工人在该场所中PAHs接触剂量,并用累积毒性等效剂量法、预期寿命损失法、致癌风险系数法等方法进行职业健康风险评估。结果在所涉及的15个岗位中,部分工种所接触的总PAHs浓度较高,最高接触浓度为1 931.45 ng/m^3。不同岗位因工艺不同存在不同的危害风险水平,工人的终身超额危险度明显超过可接受范围,部分工种存在较高致癌风险,作业工人的成年人预期寿命损失最高值达到1 033.95小时。结论部分煤焦油沥青职业工人所接触的PAHs浓度较高,超出职业接触限值,并存在较高的职业健康风险。