Communications. Possible source of atmospheric pollution of selenium

Hashimoto, Yoshikazu; Hwang, Jae Young; Yanagisawa, Saburô

doi:10.1021/es60037a002

Cited by 40 publications

(13 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…As explained above changes in meteorological conditions may lead to correlations between aerosol components. However, it has been observed elsewhere that these components could originate from sources such as fossil fuel or coal combustion (Hashimoto et al, 1970;Pacyna, 1984;Zhang et al, 2014), long-range transport, or traffic emissions relating to tire or brake wear (Handler et al, 2008).…”

Section: Elemental and Organic Carbonmentioning

confidence: 99%

Trace metal characterization of aerosol particles and cloud water during HCCT 2010

et al. 2015

View full text Add to dashboard Cite

Abstract. Trace metal characterization of bulk and sizeresolved aerosol and cloud water samples were performed during the Hill Cap Cloud Thuringia (HCCT) campaign. Cloud water was collected at the top of Mt. Schmücke while aerosol samples were collected at two stations upwind and downwind of Mt. Schmücke. Fourteen trace metals including Ti, V, Fe, Mn, Co, Zn, Ni, Cu, As, Sr, Rb, Pb, Cr, and Se were investigated during four full cloud events (FCEs) that fulfilled the conditions of a continuous air mass flow through the three stations. Aerosol particle trace metal concentrations were found to be lower than those observed in the same region during previous field experiments but were within a similar range to those observed in other rural regions in Europe. Fe and Zn were the most abundant elements with concentration ranges of 0.2-111.6 and 1.1-32.1 ng m −3 , respectively. Fe, Mn, and Ti were mainly found in coarse mode aerosols while Zn, Pb, and As were mostly found in the fine mode. Correlation and enrichment factor analysis of trace metals revealed that trace metals such as Ti and Rb were mostly of crustal origin while trace metals such as Zn, Pb, As, Cr, Ni, V, and Cu were of anthropogenic origin. Trace metals such as Fe and Mn were of mixed origins including crustal and combustion sources. Trace metal cloud water concentration decreased from Ti, Mn, Cr, to Co with average concentrations of 9.18, 5.59, 5.54, and 0.46 µg L −1 , respectively. A non-uniform distribution of soluble Fe, Cu, and Mn was observed across the cloud drop sizes. Soluble Fe and Cu were found mainly in cloud droplets with diameters between 16 and 22 µm, while Mn was found mostly in larger drops greater than 22 µm. Fe(III) was the main form of soluble Fe especially in the small and larger drops with concentrations ranging from 2.2 to 37.1 µg L −1 . In contrast to other studies, Fe(II) was observed mainly in the evening hours, implying its presence was not directly related to photochemical processes. Aerosol-cloud interaction did not lead to a marked increase in soluble trace metal concentrations; rather it led to differences in the chemical composition of the aerosol due to preferential loss of aerosol particles through physical processes including cloud drop deposition to vegetative surfaces.

show abstract

Section: Elemental and Organic Carbonmentioning

confidence: 99%

Trace metal characterization of aerosol particles and cloud water during HCCT 2010

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Coal has been used as a main fuel in China. The Se/S ratio in coal (4.85-11 × 10 -4 ) is higher than the Se/S ratio in heavy petroleum (0.58-1.3 × 10 -4 ) (Hashimoto et al, 1970;Chiou and Manuel, 1986). We sought to compare the Se/S ratios in the aerosol particles and Se/S ratio in the coal.…”

Section: So 2 Conversion Rates Of During Transport From China To Japanmentioning

confidence: 99%

“…Kido et al (2012) The Se/S ratios in fossil fuels have different values. Therefore, the ratio is used as a tracer to infer combustion sources (e.g., Hashimoto et al, 1970). Hashimoto et al (1970) and Chiou and Manuel (1986) reported that the Se/S ratio in coal is higher (4-6 × 10 -4 ) than the Se/S ratio of heavy petroleum (0.63 × 10 -4 ) or in petroleum (0.3-1 × 10 -4 ).…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the ratio is used as a tracer to infer combustion sources (e.g., Hashimoto et al, 1970). Hashimoto et al (1970) and Chiou and Manuel (1986) reported that the Se/S ratio in coal is higher (4-6 × 10 -4 ) than the Se/S ratio of heavy petroleum (0.63 × 10 -4 ) or in petroleum (0.3-1 × 10 -4 ). Dodd et al (1991) reported that the Se/S ratio in aerosols derived from coal-fired power plants is higher (2.5 × 10 -2 ) than the Se/S ratio in aerosols derived from oil-fired power plants (4.8 × 10 -5 ).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Conversion of SO2 to Particulate Sulfate during Transport from China to Japan - Assessment by Selenium in Aerosols -

Kagawa

Ishizaka

2014

Aerosol Air Qual. Res.

View full text Add to dashboard Cite

To examine transportation and oxidation states of sulfur compounds from China to Japan, the SO 2 concentration in the atmosphere and the nss-SO 4 2-concentration and selenium (Se) concentration in aerosols were observed at four sites in western Japan. High SO 2 concentrations in the atmosphere and the nss-SO 4 2-concentration and Se concentration in aerosols were found when the air mass passed through the planetary boundary layer (PBL) over large cities or industrial areas in China during winter with winds from the northwest. A bibliographic survey of Se and S concentrations in aerosols over eastern Asia during 1991Asia during -2004 revealed that the average Se and S concentrations in aerosols at seven sites of urban or industrial areas in China were, respectively, 15.7 ng/m 3 and 7.4 μg/m 3 . The S concentration and Se concentration in aerosols in China were, respectively, about 3 times and 10-20 times higher than those of Korea and Japan. The Se/S ratios of aerosols in China were higher (avg. 2.5 × 10 -3 ) than that of Korea (avg. 0.6 × 10 -3 ) or Japan (avg. 0.7 × 10 -3 ). The SO 2 conversion rate was ascertained as 0.1% h -1 to 1.5% h -1 using the Se(sum)/S ratio technique, when the air mass passed over large combustion sources in China and later reached Japan. The Se/S (or its reverse) technique provides useful information to ascertain the SO 2 to SO 4 2-conversion rate.

show abstract

“…The amount of Yb, Cs and Sc in the atmosphere of Lahore was in the order of 0.92± 0.2, 32.7±5.7 and 2.75±0.71 ηg/m 3 respectively. Although the main source of Sc is soil-derived aerosols, but some workers have also linked its presence to un-refined fuel as well (Y. Hashimoto et al 1970). The amount of Rb, Co and Eu in the atmosphere of Lahore was 24.8±5.1, 4.1±0.3 and 2.5±0.27 ηg/m 3 , while La and Ba was 10.3±1.15, 11.1 ± 2.3ηg/m 3 .…”

Section: Trace Elemental Composition Of the Aerosol Particulatesmentioning

confidence: 99%

Tracer Elements analysis of Aerosols in the Atmosphere of Lahore using Radio analytical techniques

Ata

Qadir

Rasool

2013

E3S Web of Conferences

View full text Add to dashboard Cite

Abstract. The perturbations of atmospheric processes by anthropogenic activities of man have been of great concern these days. The deposition of trace and major elements from the atmosphere to the ground is an important factor for animal and plant health, and it is of major consideration in studies on the cycling of elements that may function in the atmosphere as nutrients or potentially toxic pollutants. When assessing the input of materials in natural waters and land, the sources and composition of atmosphere need to be determined. Geological and anthropogenic contributions to air pollution were monitored by analyzing aerosol particulates present in the atmosphere of Lahore. Various sorts of experiments were performed for studying total suspended particulate matter (TSPs) using gravimetric techniques. The average value of TSPs was found 450 ug/m 2 in working days and 240 ug/m 2 in holidays. Their size distribution and trace elemental composition and their wet removal through precipitation in the atmosphere of Lahore was studied by using scanning electron microscopy (SEM) and instrumental neutron activation analysis (INAA) respectively. Eighteen elements were analyzed. Geological nature of the land was attributed the presence of Yb, Cs, Sc, Rb, Co, Eu, La, Ba, Zn and Hf s in the aerosol particulates. The presence of Cr, Fe, Ce, Pb and Cd could be linked to anthropogenic activities. Their amount was two times higher than the limits reccomended by the U.S. Environmental Protection Agency for the urban environment, mostly during working days and at various day and night time.

show abstract

Communications. Possible source of atmospheric pollution of selenium

Cited by 40 publications

References 3 publications

Trace metal characterization of aerosol particles and cloud water during HCCT 2010

Trace metal characterization of aerosol particles and cloud water during HCCT 2010

Conversion of SO2 to Particulate Sulfate during Transport from China to Japan - Assessment by Selenium in Aerosols -

Tracer Elements analysis of Aerosols in the Atmosphere of Lahore using Radio analytical techniques

Contact Info

Product

Resources

About