A new fungus which degrades hydrogen sulfide, methanethiol, dimethyl sulfide and dimethyl disulfide

1991 ◽  
Vol 13 (5) ◽  
pp. 375-380 ◽  
Author(s):  
Chae-Gun Phae ◽  
Makoto Shoda
Keyword(s):  
Hydrogen Sulfide ◽  
Dimethyl Sulfide ◽  
Dimethyl Disulfide

scholarly journals Seasonal and interannual study of volatile reduced sulfur compounds (VRSC) in coastal environment: the Bay of Quiberon (Brittany, France)

2009 ◽  
Vol 6 (5) ◽  
pp. 10057-10088 ◽  
Author(s):  
A. Cozic-Houly ◽  
E. Viollier ◽  
G. Sarazin ◽  
J. Knoery
Keyword(s):  
Hydrogen Sulfide ◽  
Water Column ◽  
Seasonal Variations ◽  
Dimethyl Sulfide ◽  
Carbonyl Sulfide ◽  
Dimethyl Disulfide ◽  
Coastal Environment ◽  
Water Interface ◽  
Reduced Sulfur Compounds ◽  
Coastal Marine

Abstract. Seasonal and annual variability of hydrogen sulfide (H2S), carbonyl sulfide (OCS), methane thiol (MeSH), dimethyl sulfide (DMS) and dimethyl disulfide (DMDS) concentrations and supporting parameters (e.g., phytoplanktonic cells abundance) were investigated in a coastal marine environment, the Bay of Quiberon (Brittany, France) from July 2004 to August 2006. The sampling was conducted in the water column, within two meters of the sediment water interface (SWI). Minimum and maximum values were <0.1–1.6 nmol L−1 for H2S, <0.1–4.2 nmol L−1 for OCS, <0.1–7.8 nmol L−1 for MeSH, <0.1–17.5 nmol L−1 for DMS and <0.1–1.7 nmol L−1 for DMDS. Vertical carbonyl sulfide distribution showed seasonal variations with lower concentration near the SWI in winter and bottom enrichments near sediments in summer. Vertical sulfide distribution not seems to be influenced by the shallow sediments. The likely influence of Dinophyceae abundance on the MeSH, DMS and DMDS concentrations was evident for the 3-summer monitored period.

Pulmonary Excretion of Hydrogen Sulfide, Methanethiol, Dimethyl Sulfide and Dimethyl Disulfide in Mice

1978 ◽  
Vol 1 (4) ◽  
pp. 327-338 ◽  
Author(s):  
Jeffrey L. Susman ◽  
James F. Horing ◽  
Sally C. Thomae ◽  
Roger P. Smith
Keyword(s):  
Hydrogen Sulfide ◽  
Dimethyl Sulfide ◽  
Dimethyl Disulfide ◽  
Pulmonary Excretion

scholarly journals The Role of Oral Microbiota in Intra-Oral Halitosis

2020 ◽  
Vol 9 (8) ◽  
pp. 2484 ◽  
Author(s):  
Katarzyna Hampelska ◽  
Marcelina Maria Jaworska ◽  
Zuzanna Łucja Babalska ◽  
Tomasz M. Karpiński
Keyword(s):  
Hydrogen Sulfide ◽  
Dimethyl Sulfide ◽  
Anaerobic Bacteria ◽  
Dimethyl Disulfide ◽  
Oral Bacteria ◽  
Oral Microbiota ◽  
Low Concentrations ◽  
Aldehydes And Ketones ◽  
Common Ailment

Halitosis is a common ailment concerning 15% to 60% of the human population. Halitosis can be divided into extra-oral halitosis (EOH) and intra-oral halitosis (IOH). The IOH is formed by volatile compounds, which are produced mainly by anaerobic bacteria. To these odorous substances belong volatile sulfur compounds (VSCs), aromatic compounds, amines, short-chain fatty or organic acids, alcohols, aliphatic compounds, aldehydes, and ketones. The most important VSCs are hydrogen sulfide, dimethyl sulfide, dimethyl disulfide, and methyl mercaptan. VSCs can be toxic for human cells even at low concentrations. The oral bacteria most related to halitosis are Actinomyces spp., Bacteroides spp., Dialister spp., Eubacterium spp., Fusobacterium spp., Leptotrichia spp., Peptostreptococcus spp., Porphyromonas spp., Prevotella spp., Selenomonas spp., Solobacterium spp., Tannerella forsythia, and Veillonella spp. Most bacteria that cause halitosis are responsible for periodontitis, but they can also affect the development of oral and digestive tract cancers. Malodorous agents responsible for carcinogenesis are hydrogen sulfide and acetaldehyde.

Stability of Volatile Sulfur Compounds (VSCs) in sampling bags – impact of temperature

2013 ◽  
Vol 68 (8) ◽  
pp. 1880-1887 ◽  
Author(s):  
H. Le ◽  
E. C. Sivret ◽  
G. Parcsi ◽  
R. M. Stuetz
Keyword(s):  
Hydrogen Sulfide ◽  
Waste Management ◽  
Dimethyl Sulfide ◽  
Agricultural Practices ◽  
Dimethyl Disulfide ◽  
Sulfur Compounds ◽  
Volatile Sulfur Compounds ◽  
Local Populations ◽  
And Storage ◽  
Volatile Sulfur

Volatile sulfur compounds (VSCs) are a major component of odorous emissions that can cause annoyance to local populations surrounding wastewater, waste management and agricultural practices. Odour collection and storage using sample bags can result in VSC losses due to sorption and leakage. Stability within 72 hour storage of VSC samples in three sampling bag materials (Tedlar, Mylar, Nalophan) was studied at three temperatures: 5, 20, and 30 °C. The VSC samples consisted of hydrogen sulfide (H2S), methanethiol (MeSH), ethanethiol (EtSH), dimethyl sulfide (DMS), tert-butanethiol (t-BuSH), ethylmethyl sulfide (EMS), 1-butanethiol (1-BuSH), dimethyl disulfide (DMDS), diethyl disulfide (DEDS), and dimethyl trisulfide (DMTS). The results for H2S showed that higher loss trend was clearly observed (46–50% at 24 hours) at 30 °C compared to the loss at 5 °C or 20 °C (of up to 27% at 24 hours) in all three bag materials. The same phenomenon was obtained for other thiols with the relative recoveries after a 24 hour period of 76–78% at 30 °C and 80–93% at 5 and 20 °C for MeSH; 77–80% at 30 °C and 79–95% at 5 and 20 °C for EtSH; 87–89% at 30 °C and 82–98% at 5 and 20 °C for t-BuSH; 61–73% at 30 °C and 76–98% at 5 and 20 °C for 1-BuSH. Results for other sulfides and disulfides (DMS, EMS, DMDS, DEDS) indicated stable relative recoveries with little dependency on temperature (83–103% after 24 hours). DMTS had clear loss trends (with relative recoveries of 74–87% in the three bag types after 24 hours) but showed minor differences in relative recoveries at 5, 20, and 30 °C.

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