The influence of solvent and pH on determination of the light absorption properties of water-soluble brown carbon

doi:10.1016/j.atmosenv.2017.04.037

	The influence of solvent and pH on determination of the light absorption properties of water-soluble brown carbon
	Mo, Yangzhi 1,4; Li, Jun 1; Liu, Junwen 1; Zhong, Guangcai 1; Cheng, Zhineng 1; Tian, Chongguo2 ; Chen, Yingjun 3; Zhang, Gan 1; Li, Jun(Chinese Acad Sci, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China)
发表期刊	ATMOSPHERIC ENVIRONMENT
ISSN	1352-2310
	2017-07-01
卷号	161 页码:90-98
关键词	Brown Carbon Water-soluble Carbon Hulis Ph Light Absorption Properties
研究领域	Environmental Sciences ; Meteorology & Atmospheric Sciences
DOI	10.1016/j.atmosenv.2017.04.037
产权排序	第2完成单位
作者部门	海岸带环境过程实验室
英文摘要	Brown carbon (BrC) is a class of unidentified organic compounds that efficiently absorb solar radiation in the ultraviolet (UV) wavelengths, and its effects on climate are poorly understood. Measurement of the light absorption properties of BrC in liquid extracts is a commonly used BrC analytical method, but the optical characteristics of water-soluble BrC may be affected by pH and solvent. In this work, we investigated the effects of concentration, pH, and solvent on water-soluble BrC from ambient aerosols, biomass burning, diesel exhaust, and a humic substance standard. The results showed that pH can affect the light absorption properties of water-soluble BrC, whereas concentration had little effect, except low concentrations dissolved in methanol. Therefore, the pH of humic-like substances (HULLS) should be adjusted to the same value as water-soluble carbon (WSOC) for calculating the light-absorption contribution of HULLS to WSOC. The-light absorptivity of water-soluble BrC dissolved in methanol was higher than that in water. Considering the pH and concentration effects, extraction of WSOC with a particle: water ratio of 0.25 mg/mL is proposed as well as to get a reference pH for light absorption analysis. (C) 2017 Elsevier Ltd. All rights reserved.
文章类型	Article
资助机构	"Strategic Priority Research Program (B)" of the Chinese Academy of Sciences(XDB05040503) ; Natural Science Foundation of China (NSFC)(41430645, 41473101) ; Guangzhou Science and Technology Plan Project(201504010002)
收录类别	SCI
语种	英语
关键词[WOS]	AQUATIC HUMIC SUBSTANCES ; OPTICAL-PROPERTIES ; ORGANIC-CARBON ; ATMOSPHERIC PARTICLES ; ANGSTROM EXPONENT ; MOLECULAR-WEIGHT ; SOLAR-RADIATION ; UNITED-STATES ; BLACK CARBON ; AEROSOL
研究领域[WOS]	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000403515900010
引用统计	被引频次：37[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/23426
专题	中国科学院海岸带环境过程与生态修复重点实验室
通讯作者	Li, Jun; Li, Jun(Chinese Acad Sci, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China)
作者单位	1.Chinese Acad Sci, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China 2.Chinese Acad Sci, Key Lab Coastal Zone Environm Proc & Ecol Remedia, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China 3.Tongji Univ, Coll Environm Sci & Engn, Shanghai 200092, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Mo, Yangzhi,Li, Jun,Liu, Junwen,et al. The influence of solvent and pH on determination of the light absorption properties of water-soluble brown carbon[J]. ATMOSPHERIC ENVIRONMENT,2017,161:90-98.
APA	Mo, Yangzhi.,Li, Jun.,Liu, Junwen.,Zhong, Guangcai.,Cheng, Zhineng.,...&Li, Jun.(2017).The influence of solvent and pH on determination of the light absorption properties of water-soluble brown carbon.ATMOSPHERIC ENVIRONMENT,161,90-98.
MLA	Mo, Yangzhi,et al."The influence of solvent and pH on determination of the light absorption properties of water-soluble brown carbon".ATMOSPHERIC ENVIRONMENT 161(2017):90-98.