摘要
2010年4月采集了东营市大气PM10样品,测定了PM10的浓度,并采用IMPROVE-TOR方法准确测量了样品中的8个碳组分。结果表明,采样期间,东营市大气PM10的平均浓度为(147.02±56.22)μg/m3;PM10中有机碳(OC)、元素碳(EC)浓度平均值分别为11.82、3.68μg/m3;PM10中OC和EC显著相关,表明OC、EC的来源相同;所有采样点PM10中OC/EC均大于2.15,表明存在二次有机碳(SOC)的贡献;PM10中SOC平均质量浓度是3.91μg/m3,占OC质量浓度的33.08%;通过计算PM10中8个碳组分丰度,初步判断东营市颗粒物中碳的主要来源是汽车尾气、道路扬尘和燃煤。
To study pollution characteristics of carbon in PM10 in Dongying in spring time, PMl0samples were collected at seven sites in April, 2010. Thermal/Optical Carbon Analyzer was employed to detect the concentrations of eight carbon fractions in particulate samples. The results showed that the average mass concentration of PM10 in Dongying was （147.02 ± 56.22）μg/m^3. The average concentration of OC in PMlo was 11.82μg/m^3 , and that of EC was 3.68 μg/m^3. The correlation between OC and EC is significant in PMlo, which showed the source of OC and EC was the same in general. Moreover, all the OC/EC ratios in PM10 exceeded 2. 15. This result suggested that there existed secondary organic carbon in ambient air of Dongying. The average mass concentration of SOC in PMIo was 3.91μg/m^3, which contributed 33.08% to the total OC in PM10. The percentage of eight carbon fractions in PM10 indicated that vehicle exhaust, road dust and coal combustion were primary sources of particulate pollution of Dongying in spring.
出处
《中国环境监测》
CAS
CSCD
北大核心
2013年第1期8-12,共5页
Environmental Monitoring in China
基金
国家环境保护公益性行业科研专项项目(200909005)
关键词
PM10
有机碳
元素碳
二次有机碳
PM10
organic carbon
elemental carbon
secondary organic carbon
