Activation analysis of airborne selenium as a possible indicator of atmospheric sulfur pollutants

Pillay, K.K.S.; Thomas, Charles C.; Sondel, J.A.

doi:10.1021/es60048a002

Cited by 21 publications

(7 citation statements)

References 1 publication

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“…The value of the Se/S ratio in bulk aerosols of this area, Se/S = 8.7 X 10~4 (7), is about a factor of 10 higher than that in snow but similar to the value of the Se/S ratio observed in aerosols from other locales, e.g,, Se/S = 10 X 10™4 in St. Louis, MO (24), Se/S = 9.6 X 10~4 in Steubenville, OH (24), and Se/S = 8.9 X 10'4 in Buffalo, NY (25). Solubilities of the oxides of the chalcogen elements increase in the order Te < Se < S, and this preferential solubility of the sulfur oxides is probably responsible for the lower values of the Se/S ratio in snow than in aerosols.…”

Section: Resultssupporting

confidence: 80%

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Chalcogen elements in snow: relation to emission source

Chiou¹,

Manuel²

1988

Environ. Sci. Technol.

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Section: Resultssupporting

confidence: 80%

“…Values of the Se/S ratio in volcanic ash and in fly ash from coal combustion (7) are similar to those observed in modern aerosols (7,24,25), but atmospheric chemistry has modified the Se/S ratio in snow from that of the emission source.…”

Section: Resultssupporting

confidence: 67%

Chalcogen elements in snow: relation to emission source

Chiou¹,

Manuel²

1988

Environ. Sci. Technol.

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“…5 17. through particle collection devices. Pillay et al (1971). found 60?6 of the atmospheric selenium in Buffalo, New York.…”

Section: Introductionmentioning

confidence: 98%

“…Also it would provide a chance to compare the major features of the atmospheric cycles of sulphur and selenium. This in itself is an interesting exercise because sulphur and selenium have similar chemistry, and because it has been postulated that selenium can be used as a tracer to help understand the atmospheric cycling of sulphur (Hashimito and Winchester, 1967;Pillay et al. 1971).…”

Section: Introductionmentioning

confidence: 99%

An atmospheric selenium budget for the region 30° N to 90° N

Ross¹

1985

Tellus B

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Using a mass balance approach, an atmospheric selenium budget for the region 30° N−90° N has been constructed. The atmosphere was assigned four different aerosol burdens corresponding to mean selenium aerosol concentrations in urban, intermediate (rural), remote/continental, and oceanic air. The budget calculations indicate that nearly all atmospheric selenium originates from anthropogenic emissions and biological activity in terrestrial and marine ecosystems. After comparing the sources of selenium to those of sulphur it is concluded that there are many similarities in their atmospheric cycling, but that there are also important differences.

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“…This system gave five sized fractions with a range of 0.01 to > 7.0 pm MMAD particle. They measured 3.6 ± 0.8 Ag Se/m 3 compared with a range of 2.1 to >7 ihern 3 measured elsewhere in the USA (Ondov et al, 1982;Pillay et al, 1971;Rahn & Lowenthal, 1985;Scheff et al, 1984). The EF for Se increased exponentially as particle size decreased.…”

Section: Selenium Enrichment Factors In Aerosols Particulates and Pmentioning

confidence: 79%

Selenium in Seleniferous Environments

Mayland

James

Panter

et al. 2015

Selenium in Agriculture and the Environment

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Selenium is biologically important because (i) it is essential in animal and possibly plant metabolism, (ii) in many areas diets do not contain sufficient Se to meet, animals' needs, and (iii) in other areas it is toxic to animals when it occurrs in high concentrations in soil, water, plants, fly ash, or in aerosols. Animals require 0.05 to 0.1 mg Se/kg in their diets to prevent Se deficiency but suffer Se toxicosis when dietary levels exceed 5 to 15 mg Se/kg. The earth's crustal materials generally contain <0.1 mg Se/kg. Higher concentrations are found in Cretaceous shales. The Seaccumulator plants growing on the seleniferous soils may contain hundreds or even thousands of mg Se/kg. However, the nonaccumulator grasses and forbs seldom accumulate >50 mg Se/kg and more often contain <5 mg Se/kg. Soils and plants may discharge volatile forms of Se into the atmosphere. However, plants may also absorb measurable amounts of gaseous Se from the atmosphere. Anthropogenic activities impact the amount of Se entering our nation's lakes, rivers, and the atmosphere. Combustion of coal and incineration of municipal waste exhaust Se into the environment. In addition, crop-fallow and irrigation practices that allow leaching waters to pass through seleniferous strata prior to intersecting with surface flow, augment the Se levels encountered by plant and animal life.In 1857, U.S. Army Surgeon T.W. Madison described toxicity symptoms in horses (Equus caballus) grazing near Fort Randall, SD (Rosenfeld & Beath, 1964). Since then, ranchers in that area have continued to experience livestock losses. They associated the toxicosis with the saline seeps and outcrops, com-

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Activation analysis of airborne selenium as a possible indicator of atmospheric sulfur pollutants

Cited by 21 publications

References 1 publication

Chalcogen elements in snow: relation to emission source

Chalcogen elements in snow: relation to emission source

An atmospheric selenium budget for the region 30° N to 90° N

Selenium in Seleniferous Environments

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