【摘 要】
：
2011年10月在青海湖畔使用单颗粒黑碳光度计(SP2)测量单颗粒黑碳气溶胶的质量、粒径分布及其混合状态。并使用黑碳仪测量黑碳的光学性质以及一氧化碳(CO)分析仪测量CO的浓度。测量结果表明黑碳平均质量浓度为0.36μgm-3,明显高于世界各地背景及偏远地区的质量浓度。黑碳浓度在夜间呈现出高峰值而在下午呈现出低谷。这种日内变化与当地的混合层高度成反相关。黑碳的质量粒径分布峰值在～175nm,且在～
【机 构】
：
西安交通大学环境科学与工程系,西安,710049 中国科学院地球环境研究所,西安,710075
【出 处】
：
第十一届全国气溶胶会议暨第十届海峡两岸气溶胶技术研讨会
论文部分内容阅读
2011年10月在青海湖畔使用单颗粒黑碳光度计(SP2)测量单颗粒黑碳气溶胶的质量、粒径分布及其混合状态。并使用黑碳仪测量黑碳的光学性质以及一氧化碳(CO)分析仪测量CO的浓度。测量结果表明黑碳平均质量浓度为0.36μgm-3,明显高于世界各地背景及偏远地区的质量浓度。黑碳浓度在夜间呈现出高峰值而在下午呈现出低谷。这种日内变化与当地的混合层高度成反相关。黑碳的质量粒径分布峰值在～175nm,且在～495nm处有一个次峰值。采样期间,～50％的黑碳颗粒物呈现出内部混合。黑碳仪与SP2的对比结果表明,青海湖地区存在除黑碳以外的其他物质对光有吸收作用。黑碳浓度与CO具有很好的相关性(r=0.83),表明他们具有相同的来源,此外黑碳与CO的比值为1.5±0.1μgm-3ppbv-1代表了青海湖地区的混合排放源特征。
其他文献
In the last three decades,huge efforts have been taken to improve understanding of the relationship between ambient nucleation of new particles and its impact on the climate in marine boundary layer (
PM2.5 aerosol sampling for collection of 24 h samples was carried out every day from Qinghai Lake (3200m a.s.l.),a remote continental site in the northeastern part of Tibetan Plateau from July to Augu
The purpose of this study is to understand the characteristics of pollution and distribution of polycyclic aromatic hydrocarbons (PAHs) in fine (PM2.1) and coarse (PM2.1-10) particles at suburban and
类腐殖质气溶胶(HULIS)是大气有机气溶胶的主要组成部分,对云凝结核的形成和气溶胶吸湿性增长至起着重要作用,但是HULIS的性质和来源在很大程度上仍是未知的。本文使用固相萃取法获得了2008年7月至2009年8月间西安PM2.5中的HULIS,并采用热光法获得HULIS的碳含量(HULIS-C ).HULIS-C年均质量浓度为3.1±3.0μgC m-3.HULIS含量冬季最高(6.2μgC m
To investigate the seasonal and day-night variation of PM10 chemical species,daytime and nighttime PM10 mass,water-soluble ions (Na+,NH4 +,K+,Mg2+,Ca2+,F-,Cl-,NO3 -,and SO4 2-),organic carbon (OC),ele
Column-integrated aerosol optical properties were derived systematically for the first time from the measurements of a ground-based CIMEL sun photometer in Xian from May to November,2012.Aerosol Optic
In this study,concentration and size distribution of biogenic secondary organic aerosols (i.e.,isoprene,pinene and sesquiterpene photooxidation products) in the summertime atmosphere of Xian city,Chin
基于溯源于美国NIST机构标准的Labsphere公司生产的积分球光源系统,利用积分球辐亮度标定方法,对四台新型Ce-318太阳光度计(T914,T984,T985和T986)的天空散射通道进行了室内标定,建立了一套应用于中国气溶胶遥感监测网(CARSNET)内Ce-318太阳光度计的室内标定方法和流程,并且对这四台经此方法标定的新型太阳光度计进行了室外观测验证。标定结果显示,2012年6月利用西
Hygroscopic growth can significantly affect size distribution and activation of aerosol particles,as well as their effects on human health,atmospheric visibility,and climate.In this study,a H-TDMA (Hy
Based on the integrating sphere traced from NIST (U.S.A),a sphere calibration method and protocol for the China Aerosol Remote Sensing NETwork (CARSNET) Cimel sunphotometer was established.Four Ce-318