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目的了解太原市大气多环芳烃污染水平及孕妇体内多环芳烃(PAHs)负荷水平,并对两者之间的关系进行探讨。方法于2007年8月至2008年2月,在太原市某社区进行环境空气颗粒物定点采样,测定PM2.5水平及其吸附的9种PAHs水平。同时,随机调查了155名孕妇,收集基本信息,采集产前尿样,测定尿1-羟基芘水平。结果采暖期间PM2.5浓度(0.299 mg/m3,2007年11至12月)高于非采暖期(0.142 mg/m3,2007年9至10月)。大气颗粒物中含有一定量PAHs,其中B(a)P水平为0.030 3μg/m3,是国家居民区大气中B(a)P的浓度标准(0.01μg/m3)的3倍。采暖期分娩的孕妇尿中1-OHPy(0.97μmol/mol Cr)高于非采暖期分娩的孕妇(0.71μmol/mol Cr)。尿1-OHPy水平与同期空气中PM2.5的变化趋势一致。结论太原市大气颗粒物污染严重,并含有较高水平的PAHs;孕期妇女体内具有一定水平的PAHs负荷,并同大气污染具有一定的相关性,提示进行污染控制及行为干预的必要性。
Objective To understand the level of PAHs pollution in the air and the PAHs levels in pregnant women in Taiyuan and to explore the relationship between the two. Methods From August 2007 to February 2008, PM2.5 was collected from a certain community in Taiyuan City to determine the levels of PM2.5 and nine PAHs adsorbed by it. At the same time, a random survey of 155 pregnant women, collecting basic information, collecting prenatal urine samples, urinary 1-hydroxypyrene levels. Results During the heating period, the concentration of PM2.5 (0.299 mg / m3, from November to December 2007) was higher than that of non-heating period (0.142 mg / m3, September to October 2007). The atmospheric particulate matter contains a certain amount of PAHs, of which the B (a) P level is 0.030 3 μg / m3, which is three times of the concentration of B (a) P in the national residential area (0.01 μg / m3) The urinary 1-OHPy (0.97 μmol / mol Cr) in pregnant women delivered during the heating period was higher than that of pregnant women (0.71 μmol / mol Cr) delivered during the non-heating period. Urine 1-OHPy levels with the same trend of PM2.5 in the air the same trend. Conclusions The airborne particulate matter in Taiyuan is seriously polluted and contains high levels of PAHs. Pregnant women have a certain level of PAHs load and have some correlation with air pollution, suggesting the necessity of pollution control and behavioral intervention.