摘要
目的了解北京市朝阳区采暖期和非采暖期大气细颗粒物(fine particulate matter,PM_(2.5))中四种邻苯二甲酸酯(phthalate esters,PAEs)污染状况,并对其健康风险进行评估。方法使用大流量采样器结合玻璃纤维滤膜采集北京市朝阳区采暖期和非采暖期PM_(2.5)样品,利用气相色谱—静电场轨道阱高分辨质谱法(GC-Orbitrap-MS)分析其中邻苯二甲酸丁基苄基酯(butylbenzyl phthalate,BBP)、邻苯二甲酸二丁酯(dibutyl phthalate,DBP)、邻苯二甲酸二异丁酯(diisobutyl phthalate,DiBP)、邻苯二甲酸二异壬酯(diisononyl phthalate,DiNP)四种邻苯二甲酸酯的浓度水平。结果四种目标PAEs均有不同程度检出,其中DiBP和DBP的检出率最高,总检出率均为100%;采暖期PM_(2.5)中Σ_(4)PAEs平均浓度为143.07 ng/m^(3),是非采暖期浓度的16.5倍;采暖期PM_(2.5)中单体含量为DiBP>DBP>BBP>DiNP,非采暖期则为DiBP>DBP>DiNP>BBP;非采暖期Σ_(4)PAEs浓度与PM_(2.5)浓度呈正相关(r_(s)=0.419,P<0.05),而采暖期无显著相关性;采暖期和非采暖期目标PAEs经呼吸途径对成人和儿童累积暴露的危害指数(hazard index,HI)均小于1。结论北京市朝阳区采暖期和非采暖期PM_(2.5)中四种目标邻苯二甲酸酯暴露健康风险均在可接受范围。
Objective To understand the pollution characteristics of phthalate esters(PAEs)in PM_(2.5) during heating and non-heating periods in Chaoyang District of Beijing and to assess their health risks.Methods A high-flow sampler combined with glass fiber filter were used to collect PM_(2.5) samples during heating and non-heating periods in Chaoyang District of Beijing,the concentration lev-els of butylbenzyl phthalate(BBP),dibutyl phthalate(DBP),diisobutyl phthalate(DiBP),and diisononyl phthalate(DiNP)in samples were analyzed by GC-Orbitrap-MS.Results Four kinds of targeted PAEs were detected in different degrees,among which DiBP and DBP had the highest detection rate of 100%.The average concentration ofΣ_(4)PAEs in PM_(2.5) during heating period was 143.07 ng/m^(3),which was 16.5 times higher than that of non-heating period.The monomer contents of PM_(2.5) in heating period were ranked as DiBP>DBP>BBP>DiNP,and DiBP>DBP>DiNP>BBP in non-heating period.Σ_(4)PAEs concentration was positively correlated with PM_(2.5) concentration in non-heating period(r_(s)=0.419,P<0.05),but there was no significant correlation in heating period.The hazard indexes(HI)of targeted PAEs exposure to adults and children through respiratory pathway were less than 1 in both heating and non-heating periods.Conclusion Four kinds of targeted PAEs were found in PM_(2.5) during heating and non-heating periods in Chaoyang District of Beijing,and their health risks of exposure were acceptable.
作者
曹亚强
顾雯
崔倩
庄思琪
陈圆圆
张续
董小艳
唐宋
CAO Ya-qiang;GU Wen;CUI Qian;ZHUANG Si-qi;CHEN Yuan-yuan;ZHANG Xu;DONG Xiao-yan;TANG Song(Center for Global Health,Nanjing Medical University,Nanjing 211166,China;China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health,Chinese Center for Disease Control and Prevention;School of Ecology and Environment,Inner Mongolian University;School of Public Health,Xuzhou Medical University)
出处
《环境卫生学杂志》
2022年第2期95-101,共7页
JOURNAL OF ENVIRONMENTAL HYGIENE
基金
中国疾病预防控制中心环境所学术带头人启动基金(18fzxm01)。
