Chemical composition and sources of PM2.5 and TSP collected at Qinghai Lake during summertime

环境化学 气溶胶 无机离子 微粒 化学成分 海盐 生物质燃烧 高原(数学) 硫酸盐 污染 作文(语言) 质量浓度(化学) 化学 环境科学 离子 哲学 有机化学 物理化学 数学分析 生物 语言学 数学 生态学
作者
Ningning Zhang,Junji Cao,Suixin Liu,Zi-Long Zhao,Hongmei Xu,Shuyu Xiao
出处
期刊:Atmospheric Research [Elsevier]
卷期号:138: 213-222 被引量:43
标识
DOI:10.1016/j.atmosres.2013.11.016
摘要

PM2.5 and total suspended particulate (TSP) samples were collected from June to September 2010 at Qinghai Lake, northeastern Tibetan Plateau. The concentrations of major water-soluble ions, 10 elements, elemental carbons (ECs) and organic carbons (OCs) were quantified. Mass concentrations of PM2.5 and TSP were 21.27 ± 10.70 μg m− 3 and 41.47 ± 20.25 μg m− 3, respectively, and the mean ratio of PM2.5/TSP was 0.51. The greatest anion and cation in both PM2.5 and TSP samples were SO42 − and Ca2 +, respectively. Crustal elements, such as Ca, Fe and K, were the main elements in our aerosol samples, and their enrichment factors (EFs) were lower than 10. EFs for Pb, As, and Zn were greater than 10, indicating that they were influenced by anthropogenic sources. EC concentrations were 0.33 ± 0.17 μg m− 3 and 0.47 ± 0.28 μg m− 3, whereas OC concentrations were 1.49 ± 0.63 μg m− 3 and 2.30 ± 0.95 μg m− 3 in PM2.5 and TSP, respectively. Based on the calculated ratios of EC/TC and K+/EC, most of the ECs were found to be related to biomass burning emissions. Because of the pollution from local sources, the ratios of OC/EC were 4.77 ± 1.32 and 5.23 ± 1.39 in PM2.5 and TSP, respectively, which were lower than those of other remote sites. Salt particles produced by the salty lake reacted with acid gases and caused most of the nitrates and a small fraction of sulfate to be distributed in coarse mode; Cl deficit was also observed in our aerosol samples. Results of backward trajectories and correlation analysis show that the concentrations of SO4 2−, OCs, As, Pb, and Zn, were influenced by the long-distance transport from eastern China.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
大幅提高文件上传限制,最高150M (2024-4-1)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
7秒前
111完成签到,获得积分10
11秒前
封小封发布了新的文献求助10
12秒前
科研通AI2S应助封小封采纳,获得10
22秒前
鸭梨很大完成签到 ,获得积分10
24秒前
老六完成签到 ,获得积分10
29秒前
郭郭完成签到 ,获得积分10
33秒前
LIUYONG关注了科研通微信公众号
34秒前
35秒前
锦上添花完成签到 ,获得积分10
42秒前
48秒前
手术刀完成签到 ,获得积分10
49秒前
53秒前
jiajia完成签到,获得积分10
55秒前
alho完成签到 ,获得积分10
1分钟前
1分钟前
Jeffery426完成签到,获得积分10
1分钟前
derrrrrsin发布了新的文献求助10
1分钟前
happyccch完成签到 ,获得积分10
1分钟前
沉静的友灵完成签到,获得积分10
1分钟前
三笠完成签到 ,获得积分10
1分钟前
英姑应助段誉采纳,获得10
1分钟前
苜蓿完成签到 ,获得积分10
1分钟前
derrrrrsin完成签到,获得积分10
1分钟前
领导范儿应助LIUYONG采纳,获得10
1分钟前
无为完成签到,获得积分10
1分钟前
zhangjianzeng完成签到,获得积分10
1分钟前
fogsea完成签到,获得积分0
1分钟前
chxi完成签到 ,获得积分10
1分钟前
单三毒完成签到 ,获得积分10
1分钟前
李子完成签到 ,获得积分10
1分钟前
安紊完成签到,获得积分10
1分钟前
hhhhmmmn完成签到,获得积分10
1分钟前
粥粥完成签到,获得积分10
1分钟前
wangsikui完成签到,获得积分10
1分钟前
共享精神应助yahonyoyoyo采纳,获得10
1分钟前
ccccc完成签到 ,获得积分10
1分钟前
菜鸟完成签到 ,获得积分10
1分钟前
1分钟前
aa完成签到,获得积分10
1分钟前
高分求助中
Un calendrier babylonien des travaux, des signes et des mois: Séries iqqur îpuš 1036
Sustainable Land Management: Strategies to Cope with the Marginalisation of Agriculture 1000
Corrosion and Oxygen Control 600
Python Programming for Linguistics and Digital Humanities: Applications for Text-Focused Fields 500
Heterocyclic Stilbene and Bibenzyl Derivatives in Liverworts: Distribution, Structures, Total Synthesis and Biological Activity 500
重庆市新能源汽车产业大数据招商指南(两链两图两池两库两平台两清单两报告) 400
Division and square root. Digit-recurrence algorithms and implementations 400
热门求助领域 (近24小时)
化学 材料科学 医学 生物 有机化学 工程类 生物化学 纳米技术 物理 内科学 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 电极 光电子学 量子力学
热门帖子
关注 科研通微信公众号,转发送积分 2546210
求助须知:如何正确求助?哪些是违规求助? 2175672
关于积分的说明 5600310
捐赠科研通 1896399
什么是DOI,文献DOI怎么找? 946273
版权声明 565379
科研通“疑难数据库(出版商)”最低求助积分说明 503557