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DOI	10.5194/amt-13-3799-2020
	A new optical-based technique for real-time measurements of mineral dust concentration in PM10 using a virtual impactor
	Drinovec, Luka; Sciare, Jean; Stavroulas, Iasonas; Bezantakos, Spiros; Pikridas, Michael; Unga, Florin; Savvides, Chrysanthos; Visic, Bojana; Remskar, Maja; Mocnik, Grisa
通讯作者	Drinovec, L
来源期刊	ATMOSPHERIC MEASUREMENT TECHNIQUES
ISSN	1867-1381
EISSN	1867-8548
出版年	2020
卷号	13 期号:7 页码:3799-3813
英文摘要	Atmospheric mineral dust influences Earth's radiative budget, cloud formation, and lifetime; has adverse health effects; and affects air quality through the increase of regulatory PM10 concentrations, making its real-time quantification in the atmosphere of strategic importance. Only few near-real-time techniques can discriminate dust aerosol in PM10 samples and they are based on the dust chemical composition. The online determination of mineral dust using aerosol absorption photometers offers an interesting and competitive alternative but remains a difficult task to achieve. This is particularly challenging when dust is mixed with black carbon, which features a much higher mass absorption cross section. We build on previous work using filter photometers and present here for the first time a highly timeresolved online technique for quantification of mineral dust concentration by coupling a high-flow virtual impactor (VI) sampler that concentrates coarse particles with an aerosol absorption photometer (Aethalometer, model AE33). The absorption of concentrated dust particles is obtained by subtracting the absorption of the submicron (PM1) aerosol fraction from the absorption of the virtual impactor sample (VIPM1 method). This real-time method for detecting desert dust was tested in the field for a period of 2 months (April and May 2016) at a regional background site of Cyprus, in the Eastern Mediterranean. Several intense desert mineral dust events were observed during the field campaign with dust concentration in PM10 up to 45 mu gm 3. Mineral dust was present most of the time during the campaign with an average PM10 of about 8 mu gm(-3). Mineral dust absorption was most prominent at short wavelengths, yielding an average mass absorption cross section (MAC) of 0.24 +/- 0.01m(2) g(-1) at 370 nm and an absorption Angstrom exponent of 1.41 +/- 0.29. This MAC value can be used as a site-specific parameter for online determination of mineral dust concentration. The uncertainty of the proposed method is discussed by comparing and validating it with different methods.
类型	Article
语种	英语
开放获取类型	DOAJ Gold
收录类别	SCI-E
WOS记录号	WOS:000551465700001
WOS关键词	SINGLE-SCATTERING ALBEDO ; BLACK CARBON ; SAHARAN DUST ; RADIATIVE PROPERTIES ; PARTICULATE MATTER ; SHORTWAVE SPECTRUM ; TRACE-METALS ; IN-SITU ; AEROSOL ; ABSORPTION
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325147
作者单位	[Drinovec, Luka; Visic, Bojana; Remskar, Maja; Mocnik, Grisa] Jozef Stefan Inst, Dept Condensed Matter Phys, Ljubljana, Slovenia; [Sciare, Jean; Stavroulas, Iasonas; Bezantakos, Spiros; Pikridas, Michael; Unga, Florin] Cyprus Inst, Climate & Atmosphere Res Ctr, Nicosia, Cyprus; [Savvides, Chrysanthos] Minist Labour Welf & Social Insurance, Dept Labour Inspect, Nicosia, Cyprus; [Visic, Bojana] Univ Belgrade, Inst Phys Belgrade, Belgrade, Serbia; [Mocnik, Grisa] Univ Nova Gorica, Ctr Atmospher Res, Ajdovscina, Slovenia
推荐引用方式 GB/T 7714	Drinovec, Luka,Sciare, Jean,Stavroulas, Iasonas,et al. A new optical-based technique for real-time measurements of mineral dust concentration in PM10 using a virtual impactor[J],2020,13(7):3799-3813.
APA	Drinovec, Luka.,Sciare, Jean.,Stavroulas, Iasonas.,Bezantakos, Spiros.,Pikridas, Michael.,...&Mocnik, Grisa.(2020).A new optical-based technique for real-time measurements of mineral dust concentration in PM10 using a virtual impactor.ATMOSPHERIC MEASUREMENT TECHNIQUES,13(7),3799-3813.
MLA	Drinovec, Luka,et al."A new optical-based technique for real-time measurements of mineral dust concentration in PM10 using a virtual impactor".ATMOSPHERIC MEASUREMENT TECHNIQUES 13.7(2020):3799-3813.