School of Occupational Safety and Health, Chung Shan Medical University, Taichung, Taiwan.
J Hazard Mater. 2010 Sep 15;181(1-3):105-11. doi: 10.1016/j.jhazmat.2010.04.097.
Thirty-seven air samplings in different working areas of two foundry industries were collected to assess polycyclic aromatic hydrocarbon (PAH) levels. The average PAH level inside Foundry A was 19.56 microg/m(3), which was higher than that in Foundry B (8.26 microg/m(3)), whereas for the benzo[a]pyrene toxic equivalent (BaPeq) level (38.81 ng/m(3) vs. 46.52 ng/m(3)). A higher PAH level was found for big moulding process than for the small one, and the chemical binder in the different size moulds was hypothesized to be the main cause. The higher PAH levels were found in the painting area (95.51 microg/m(3)), pouring area (18.42 microg/m(3)), and inside the office (16.48 microg/m(3)); as well as the higher BaPeq level was in the painting area (152.3 ng/m(3)), and the furnace for melting iron (96.9 ng/m(3)). The gas phase (over 90%) was the major contributor of total PAHs in the manufacturing areas. Moreover, health risk assessment of PAHs exposure showed that lung cancer risks were 9.06x10(-4) and 1.09x10(-3) in Foundries A and B, respectively. This study suggests that the workers shall use appropriate respiratory masks in painting, melting, and pouring areas to prevent their occupational exposure to PAHs.
采集了两家铸造厂不同工作区域的 37 个空气样本，以评估多环芳烃（PAH）水平。铸造厂 A 内的 PAH 水平平均值为 19.56μg/m³，高于铸造厂 B（8.26μg/m³），而苯并[a]芘毒性等效浓度（BaPeq）水平（38.81ng/m³ 对 46.52ng/m³）。大模具成型工艺的 PAH 水平高于小模具成型工艺，而不同尺寸模具中的化学结合剂被假设为主要原因。在喷涂区（95.51μg/m³）、浇注区（18.42μg/m³）和办公室内（16.48μg/m³）发现了更高的 PAH 水平；在喷涂区（152.3ng/m³）和熔化铁的炉子（96.9ng/m³）中发现了更高的 BaPeq 水平。气相（超过 90%）是制造区域中总多环芳烃的主要贡献者。此外，多环芳烃暴露的健康风险评估表明，铸造厂 A 和 B 的肺癌风险分别为 9.06x10(-4)和 1.09x10(-3)。本研究表明，工人在喷涂、熔化和浇注区域应使用适当的呼吸面罩，以防止职业性接触多环芳烃。
