西沙永兴岛黑碳浓度特征初探  

Preliminary Analysis of Concentration Variations of Black Carbon

作　　者：杜丽[1] 孟晓艳[1] 李钢[1] 李健军[1] 王瑞斌[1] 谢东海[2] 刘统亮[2] 

机构地区：[1]中国环境监测总站,北京100012 [2]海南省环境监测中心站,海南海口570206

出　　处：《中国环境监测》2013年第5期69-72,共4页Environmental Monitoring in China

基　　金：国家大气环境关键问题识别与空气质量改善技术路线图研究(201009001-4);空气污染指数评价方法改进(2011-38)

摘　　要：2012年5月6-9日利用黑碳仪获得了西沙永兴岛小时黑碳浓度数据.结果显示,西沙永兴岛黑碳小时浓度值变化范围为0.1 ～ 2.9 μg/m3,平均浓度为0.6μg/m3,80.5％的小时浓度数据集中在0.2～0.7μg/m3;黑碳浓度与风速、降水密切相关,风速大于2.5 m/s有利于黑碳扩散,降水对黑碳冲刷作用明显；黑碳浓度与背景区域的瓦里关黑碳浓度相近,高于背景区域的南极中山站,明显低于国内的多个城市及郊区的黑碳浓度.Black carbon mass concentration was measured with an Aethalometer-AE21 during May 6th to 9th in Xisha Yongxing Island.The results showed that black carbon hourly concentrations were in the range of 0.1-2.9 μg/m3 and the average concentration was 0.6 μg/m3.80.5％ of hourly data were in the range of 0.2-0.7 μg/m3.There was a close relationship between t he variation of black carbon concentration and wind speed,precipitation.The higher the wind speed and precipitation were,the lower black carbon concentration was.The concentration of black carbon was near to that in Waliguan Station,higher than that in Zhongshan Station,and lower than that in urban or rural area.

关 键 词：黑碳 西沙永兴岛 气象因素 

分 类 号：X823[环境科学与工程—环境工程]