Results 11 to 20 of about 73,680 (311)

Mixing state of oxalic acid containing particles in the rural area of Pearl River Delta, China: implications for the formation mechanism of oxalic acid [PDF]

Atmospheric Chemistry and Physics, 2017
The formation of oxalic acid and its mixing state in atmospheric particulate matter (PM) were studied using a single-particle aerosol mass spectrometer (SPAMS) in the summer and winter of 2014 in Heshan, a supersite in the rural area of the Pearl ...
C. Cheng, C. Cheng, M. Li, M. Li, C. K. Chan, H. Tong, C. Chen, D. Chen, D. Wu, D. Wu, L. Li, L. Li, C. Wu, C. Wu, P. Cheng, P. Cheng, W. Gao, W. Gao, Z. Huang, Z. Huang, X. Li, X. Li, Z. Zhang, Z. Zhang, Z. Fu, Y. Bi, Z. Zhou, Z. Zhou   +27 more
doaj   +1 more source

PM source apportionment and health effects: 1. Intercomparison of source apportionment results [PDF]

Journal of Exposure Science & Environmental Epidemiology, 2005
During the past three decades, receptor models have been used to identify and apportion ambient concentrations to sources. A number of groups are employing these methods to provide input into air quality management planning. A workshop has explored the use of resolved source contributions in health effects models.
Philip K, Hopke, Kazuhiko, Ito, Therese, Mar, William F, Christensen, Delbert J, Eatough, Ronald C, Henry, Eugene, Kim, Francine, Laden, Ramona, Lall, Timothy V, Larson, Hao, Liu, Lucas, Neas, Joseph, Pinto, Matthias, Stölzel, Helen, Suh, Pentti, Paatero, George D, Thurston   +16 more
openaire   +2 more sources

Source Apportionment with Site Specific Source Profiles [PDF]

Journal of the Air & Waste Management Association, 1991
A receptor modeling study was performed to identify and apportion the sources of PM10 mass in Granite City, Illinois, an area of historic TSP nonattainment. Samples of the ambient aerosol were collected using a dichotomous sampler. Each sample was analyzed by x-ray fluorescence and instrumental neutron activation analysis.
D M, Glover, P K, Hopke, S J, Vermette, S, Landsberger, D R, D'Auben   +4 more
openaire   +2 more sources

Mechanistic insights into the generation and control of Cl-DBPs during wastewater sludge chlorination disinfection process

Environment International, 2022
Chlorination disinfection has been widely used to kill the pathogenic microorganisms in wastewater sludge during the special Covid-19 period, but sludge chlorination might cause the generation of harmful disinfection byproducts (DBPs).
Weijun Zhang, Tianyi Dong, Jing Ai, Qinglong Fu, Nan Zhang, Hang He, Qilin Wang, Dongsheng Wang   +7 more
doaj   +1 more source

Chemical Composition and Source of PM_2.5 during Winter Heating Period in Guanzhong Basin

Atmosphere, 2023
An intensive field campaign was carried out from December 2022 to March 2023 at six different sites across five major cities (Xi’an, Baoji, Xianyang, Weinan, and Hancheng) in the Guanzhong Basin, China, covering most of the heating period there, which is
Lei Cao, Yanan Tao, Hao Zheng, Mei Wang, Shiying Li, Yongjiang Xu, Mei Li   +6 more
doaj   +1 more source

Characteristics and mixing state of amine-containing particles at a rural site in the Pearl River Delta, China [PDF]

Atmospheric Chemistry and Physics, 2018
Particulate amines play an important role for the particle acidity and hygroscopicity and also contribute to secondary organic aerosol mass. We investigated the sources and mixing states of particulate amines using a single-particle aerosol mass ...
C. Cheng, C. Cheng, Z. Huang, C. K. Chan, Y. Chu, M. Li, M. Li, T. Zhang, Y. Ou, D. Chen, P. Cheng, P. Cheng, L. Li, L. Li, W. Gao, W. Gao, Z. Huang, Z. Huang, B. Huang, B. Huang, B. Huang, Z. Fu, Z. Zhou, Z. Zhou   +23 more
doaj   +1 more source

Estimation of the share of artificial Po-210 contamination in the ambient air [PDF]

Archives of Environmental Protection, 2021
In this work, source apportionment for unsupported 210Po was conducted. The activity size distributions of both supported and unsupported 210Po in urban aerosols were measured from February to December 2019.
Magdalena Długosz-Lisiecka, Karolina Nowak   +1 more
doaj   +1 more source

Sensitivity of source apportionment results to mobile source profiles [PDF]

Environmental Pollution, 2016
The sensitivity of a source apportionment model to mobile source profiles was examined to determine the impact of using non-local mobile source profiles in chemical mass balance (CMB) models. We examined the impact of USA and Chinese mobile source profiles on source apportionment results in St. Louis, Missouri, and Beijing.
Tianqi Cai, James J. Schauer, Wei Huang, Dongqing Fang, Jing Shang, Yuqin Wang, Yuanxun Zhang   +6 more
openaire   +2 more sources

High-temporal resolution fluvial sediment source fingerprinting with uncertainty: a Bayesian approach [PDF]

, 2014
This contribution addresses two developing areas of sediment fingerprinting research. Specifically, how to improve the temporal resolution of source apportionment estimates whilst minimizing analytical costs and, secondly, how to consistently quantify ...
Acornley, Agency, Bilotta, Blake, Boardman, Buchanan, Collins, Collins, Collins, Collins, Cooper, D'Haen, Dutton, Egozcue, Evans, Evrard, Evrard, Fox, Gellis, Gruszowski, Hancock, Hilton, Hiscock, Hiscock, Hopkins, Horowitz, House, Huisman, Jobbágy, Kim, Krueger, Lefrançois, Legout, Lewis, Martínez-Carreras, Martínez-Carreras, Massoudieh, Matsumoto, Meteorological Office, Motha, Navratil, Olley, Owens, Palmer, Parnell, Parnell, Phillips, Plummer, Poulenard, Poulenard, Pretty, R Development Core Team, Rawlins, Rawlins, Rowan, Russell, Schindler Wildhaber, Sear, Semmens, Slimane, Small, Smith, Smith, Smith, Theuring, Thompson, Thompson, Tremblay, Walling, Walling, Wilkinson, Williams   +71 more
core   +1 more source

Direct Electrospray Ionization Mass Spectrometry for Monitoring of Photochemical Oxidation Reaction of Benzaldehyde in Face Mask [PDF]

Zhipu Xuebao
Face masks are usually used to prevent inhalable particles and microdroplets that may enter the nose and mouth. However, a lot of organic contaminants can be found in materials, manufacturing processes, or packaging of face mask, so there is a potential ...
YI Man, DONG Song-bin, HU Bin
doaj   +1 more source