Results 161 to 170 of about 53,190 (206)

Salinity stress results in ammonium and nitrite accumulation during the elemental sulfur-driven autotrophic denitrification process. [PDF]

Front Microbiol
Fan W, Huang X, Xiong J, Wang S.
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Denitrification of groundwater with elemental sulfur

Water Research, 2002
Autotrophic denitrification was studied in laboratory columns packed with granular elemental sulfur only and operated in an upflow mode. Soluble inorganic carbon, sodium bicarbonate, was supplied as source of carbon for microbial growth. Denitrification rates of up to 0.20 kg N removed m(-3) d(-1) were obtained at a hydraulic retention time of I h, and
exaly   +3 more sources

Production of elemental sulfur by green and purple sulfur bacteria [PDF]

Archives of Microbiology, 1986
The utilization of sulfide by phototrophic sulfur bacteria temporarily results in the accumulation of elemental sulfur. In the green sulfur bacteria (Chlorobiaceae), the sulfur is deposited outside the cells, whereas in the purple sulfur bacteria (Chromatiaceae) sulfur is found intracellularly.
van Gemerden, Hans, van Gemerden , Hans
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Multiple sulfur isotopic evidence for the origin of elemental sulfur in an iron-dominated gas hydrate-bearing sedimentary environment [PDF]

Marine Geology, 2018
Elemental sulfur is commonly regarded as the product of oxidative sulfur cycling in the sediment. However, reports on the occurrence of elemental sulfur in seepage areas are few and thus its origin and mechanisms controlling its distribution are ...
Zhiyong Lin, Xiaoming Sun, Yang Lu
exaly   +2 more sources

Elemental sulfur in sediments: analytical problems

Environmental Science and Pollution Research, 2016
In the paper, a modified method for elemental sulfur (S8) determining using gas chromatography coupled with mass spectrometry (GC-MS) is proposed with estimation of selected validation parameters. The aim of this work was a review of problems associated with the determination of S8 and selection of the most optimal conditions for S8 analysis with GC-MS.
Justyna Rogowska, Joanna Sychowska, Monika Cieszyńska-Semenowicz, Lidia Wolska   +3 more
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ELEMENTAL SULFUR REACTIONS WITH 2-PICOLINE

Phosphorus, Sulfur, and Silicon and the Related Elements, 1990
A study of the reaction of the elemental sulfur with 2-picoline is reported. The process was carried out at the boiling point of the 2-picoline under argon. After removing unreacted solids, the reaction products were identified by means of LC. GC and GC-MS. The following products have been identified by mass spectrometry: 1,2-di/2-pyridyl/-ethane.
Edward Gleich, Zygmunt Warnke
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Characteristics of dextrin adsorption by elemental sulfur

Journal of Colloid and Interface Science, 2008
Characteristics of dextrin adsorption by elemental sulfur were investigated by the means of diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy, total organic carbon (TOC) measurements, BET measurements as well as molecular dynamics simulation (MDS).
Sylwia K, Brossard, Hao, Du, Jan D, Miller   +2 more
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Elemental sulfur toxicosis in a flock of sheep

Journal of the American Veterinary Medical Association, 1996
Two thousand Panama X Rambouillet ewes from a flock of 2,200 developed signs of acute toxicosis after being moved to a field that had been sprayed 16 hours earlier with elemental sulfur. Acute signs were lethargy, abdominal discomfort, and prostration. Two hundred six (10%) of the affected ewes died within 24 hours.
M S, Bulgin, S D, Lincoln, G, Mather
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ELEMENTAL SULFUR REACTIONS WITH 4-PICOLINE

Phosphorous and Sulfur and the Related Elements, 1986
A study of the reaction of the elemental sulfur with 4-picoline is reported. The process was carried out at the boiling point of the 4-picoline under argon. After removing unreacted solids, the reaction products were identified by means of LC, GC, and GC-MS. The following products have been identified: 1,2-di[4-pyridyl]-ethane, 1,2-di[4-pyridyl]-ethene,
E. Gleich, Z. Warnke, J. Szafranek, E. Malinski   +3 more
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ELEMENTAL SULFUR REACTIONS WITH 3-PICOLINE

Phosphorus, Sulfur, and Silicon and the Related Elements, 1991
A study of the reaction of the elemental sulfur with 3-picoline is reported. The process was carried out at the boiling point of the 3-picoline under argon. After removing unreacted solids, the reaction products were identified by means of LC, GC and GC-MS.
Edward Gleich, Zygmunt Warnke, Walter Schwarting   +2 more
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