石家庄市采暖期与非采暖期PM2.5中多环芳烃的来源解析及健康风险评价 |
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引用本文: | 唐大镜,孙成瑶,陈凤格,赵川,关茗洋.石家庄市采暖期与非采暖期PM2.5中多环芳烃的来源解析及健康风险评价[J].气象学报,2022,80(3):410-420. |
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作者姓名: | 唐大镜 孙成瑶 陈凤格 赵川 关茗洋 |
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作者单位: | 1.石家庄市疾病预防控制中心,石家庄,050011 |
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摘 要: | 为研究石家庄市采暖期与非采暖期大气细颗粒物(PM2.5)中多环芳烃(Polycyclic Aromatic Hydrocarbons,PAHs)的污染特征及其人群健康效应,采集了石家庄市2017年1月—2019年12月每月10—16日PM2.5样品,使用气相色谱-质谱联用仪测定PM2.5中优先控制的16种多环芳烃的浓度,分析采暖期与非采暖期PM2.5中多环芳烃的污染水平及组成特征,利用特征比值法和主成分分析法对其来源进行定性判断,并采用健康风险评估模型以及预期寿命损失评估多环芳烃对人群的健康风险。结果表明:(1)PM2.5及其中多环芳烃浓度平均水平在采暖期分别为106.00μg/m3、44.17 ng/m3,非采暖期分别为73.00μg/m3、40.17 ng/m3。16种多环芳烃中含量最高的是苯并a]芘,其次为苯并k]荧蒽、苯并b]荧蒽、?。多环芳烃单体环数越高其致癌作用越强,不同环...
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关 键 词: | PM2.5 多环芳烃 来源解析 健康风险 预期寿命损失 |
收稿时间: | 2021-10-29 |
修稿时间: | 2022-03-25 |
Sources and health risk assessment of PM2.5-bound PAHs during heating and non-heating periods in Shijiazhuang city |
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Institution: | 1.Shijiazhuang Center for Disease Control and Prevention,Shijiazhuang 050011,China2.School of Public Health,North China University of Science and Technology,Tangshan 063210,China3.Research Base for Environment and Health in Shijiazhuang,Chinese Center for Disease Control and Prevention,Shijiazhuang 050011,China4.The Fourth Hospital of Shijiazhuang,Shijiazhuang 050011,China |
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Abstract: | To investigate the pollution characteristics and human health risk of polycyclic aromatic hydrocarbons (PAHs) during heating and non-heating periods in Shijiazhuang, PM2.5 samples are collected during 10—16 of every month from 2017 to 2019 in Shijiazhuang. 16 priority PAHs associated with fine particulate matter are identified by gas chromatography mass spectrometry (GC-MS). The concentrations and composition characteristics of the PAHs in heating and non-heating periods are analyzed. Diagnostic ratio analysis and principal component analysis are used to identify the emission sources of PM2.5-bound PAHs, and an incremental lifetime cancer risk (ILCR) model and the loss of life (LL) expectancy are applied to evaluate the health risks. The results show that the mean concentrations of PM2.5 and PAHs are 106.00 μg/m3 and 44.17 ng/m3 during the heating period, and 73.00 μg/m3 and 40.17 ng/m3 during non-heating period, respectively. The concentration of BaP is the highest, followed by that of BkF, BbF and Chry. PAHs of high ring numbers are more carcinogenic than those of low ring numbers, and the proportions of PAHs with different ring numbers in the heating period is different from that during the non-heating period, i.e., 4 rings >5 rings >2—3 rings >6 rings in the heating period, while in the non-heating period from high to low are 5, 4, 6, and 2—3 rings. Diagnostic ratios and principal component analysis indicate that coal combustion is the main source of PM2.5 in the heating period, and traffic emission plays an important role in the non-heating period. ILCR and LL in the non-heating period are higher than that in the heating period. ILCR and LL rank from high to low for adults, teenagers and children. The ILCR range of PAHs in the entire population is 10?6—10?4, indicating that the level of carcinogenic risk is potential in Shijiazhuang. The losses of life expectancy for male children, teenagers, and adults are 41.18, 54.72, and 110.42 min, respectively. The losses of expectancy for female children, teenagers, and adults are 42.93, 57.53, and 101.05 min, respectively. This study has shown that PM2.5-bound PAHs have a potential carcinogenic risk in all populations, and attention should be paid to the loss of life expectancy caused by respiratory exposure to PAHs in Shijiazhuang. |
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