Source Apportionment of Ambient PM_(10) and PM_(2.5) in Urban Area of Ningbo City
Source Apportionment of Ambient PM_(10) and PM_(2.5) in Urban Area of Ningbo City
复制标题
DOI：
--
复制
发表时间：
2012
影响因子：
--
通讯作者：
Weng Yan-bo
中科院分区：
文献类型：
--
作者：
Weng Yan-bo
2010年在浙江省宁波市3个采样点采集PM10和PM2.5样品，分析其无机元素、水溶性离子和碳形态，以确定PM10和PM2.5的来源。采用“OC/EC最小比值法”确定次生有机碳（SOC）对PM10和PM2.5的贡献。结果表明：1）悬浮尘、燃煤飞灰、硫酸盐和机动车尾气是宁波市PM10的重要来源，贡献率分别为23.0%、15.9%、13.3%和12.3%; 2）PM2.5主要来源为悬浮尘、燃煤飞灰、硫酸盐、机动车尾气、硝酸盐和SOC，贡献率分别为19.9%、14.4%、16.9%、15.2%、9.78%和8.85%。
Samples of PM10 and PM2.5 and sources of particulate matter were collected in 2010 at three sites in Ningbo City,Zhejiang Province.Their inorganic elements,water solvent ions and carbon species were analyzed to identify the sources of the PM10 and PM2.5.The contributions of secondary organic carbon(SOC) to PM10 and PM2.5 were determined by the "OC/EC minimum ratio" technique,and the chemical profiles of ambient PM10 and PM2.5 were established.The sources of PM10 and PM2.5 in Ningbo City were analyzed based on the chemical mass balance(CMB) receptor model.The results showed:1) suspended dust,fly ash from coal combustion,sulfate and vehicle exhaust were the important sources of PM10,with contributions of 23.0%,15.9%,13.3% and 12.3%,respectively;2) the most important PM2.5 sources were suspended dust,fly ash from coal combustion,sulfates,vehicle exhaust,nitrates and SOC,with contributions of 19.9%,14.4%,16.9%,15.2%,9.78% and 8.85%,respectively.