Department of Safety Health and Environmental Engineering, Central Taiwan University of Science and Technology, Taichung, Taiwan, Republic of China.
Department of Environmental Science and Engineering, Tunghai University, Taichung, Taiwan, Republic of China.
Environ Sci Pollut Res Int. 2015 Dec;22(24):19451-60. doi: 10.1007/s11356-015-5135-x. Epub 2015 Aug 11.
Concentrations of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) were estimated for different particle size distributions in a carbon black feeding process at a tire manufacturing plant on 15 days in March and April of 2014. A total of 75 integrated air samples were collected using a micro-orifice uniform deposition impactor (MOUDI). Particle-bound PCDD/Fs were analyzed using a high-resolution gas chromatograph/high-resolution mass spectrometer (HRGC/HRMS). Concentrations of thoracic particles and total particles produced in the carbon black feeding process of a tire manufacturing plant were measured in ranges of 0.19-2.61 and 0.28-4.22 mg/m(3), respectively. On all sampling days, the three most abundant species of PCDD/Fs were OCDD, 1,2,3,4,6,7,8-HpCDF, and OCDF. The mean concentrations of total PCDD/Fs were 0.74-6.83 pg/m(3) within five particle size ranges. Total I-TEQ in particulate matter (PM)<1.0 was 2.2 and 3.2 times higher than those in PM>18 and PM2.5-10, respectively. However, the total I-TEQ of thoracic PM contributed approximately 74 % of the total I-TEQ of total PM. The assessment of health risk indicates that exposure to fractions of thoracic PM by inhalation poses a significant cancer risk (>10(-6)).
于 2014 年 3 月和 4 月的 15 天内，在一家轮胎制造厂的炭黑进料过程中，估算了不同粒径分布下多氯二苯并对二恶英和多氯二苯并呋喃（PCDD/Fs）的浓度。使用微孔均匀沉积撞击器（MOUDI）采集了总共 75 个综合空气样本。使用高分辨率气相色谱/高分辨率质谱仪（HRGC/HRMS）分析了颗粒结合态 PCDD/Fs。测量了轮胎制造厂炭黑进料过程中产生的胸颗粒物和总颗粒物的浓度，范围分别为 0.19-2.61 和 0.28-4.22 mg/m3。在所有采样日，PCDD/Fs 中最丰富的三种物质为 OCDD、1,2,3,4,6,7,8-HpCDF 和 OCDF。在五个粒径范围内，总 PCDD/Fs 的平均浓度为 0.74-6.83 pg/m3。PM<1.0 中的总 I-TEQ 分别比 PM>18 和 PM2.5-10 中的总 I-TEQ 高 2.2 和 3.2 倍。然而，胸颗粒物中的总 I-TEQ 约占总颗粒物中总 I-TEQ 的 74%。健康风险评估表明，通过吸入吸入胸颗粒物会导致显著的癌症风险（>10(-6)）。
