The loss of volatile sulfur from sheep

1982 ◽  
Vol 33 (3) ◽  
pp. 585 ◽  
Author(s):  
K Kandylis ◽  
AC Bray
Keyword(s):  
Hydrogen Sulfide ◽  
Flow Rate ◽  
Sodium Sulfate ◽  
Sulfur Compounds ◽  
Volatile Sulfur Compounds ◽  
Gas Tight ◽  
Sulfur Balance ◽  
Volatile Sulfur

The losses of volatile sulfur compounds from sheep were investigated with sheep maintained on a high sulfur ration. The sheep were kept in metabolism cages in a 1-m3 gas-tight chamber with air drawn through the chamber and a trapping bath at a flow rate of 15 l/min. After the intraruminal administration of [35S]sodium sulfate, only minor quantities of 35S were found in the trapping bath over the following 8 h. It was concluded that volatile sulfur loss by eructation is negligible in the overall sulfur balance of the sheep. When [35S]hydrogen sulfide was released in the chamber, 50-80% of the 35S was recovered in the trapping bath in the subsequent 6 h.

Effect of Nitrogen Supplementation and Saccharomyces Species on Hydrogen Sulfide and Other Volatile Sulfur Compounds in Shiraz Fermentation and Wine

2009 ◽  
Vol 57 (11) ◽  
pp. 4948-4955 ◽  
Author(s):  
Maurizio Ugliano ◽  
Bruno Fedrizzi ◽  
Tracey Siebert ◽  
Brooke Travis ◽  
Franco Magno ◽  
...  
Keyword(s):  
Hydrogen Sulfide ◽  
Sulfur Compounds ◽  
Nitrogen Supplementation ◽  
Volatile Sulfur Compounds ◽  
Volatile Sulfur

Determination of nanogram level of VSCs using GC-SCD and an adsorption tube

2004 ◽  
Vol 49 (9) ◽  
pp. 329-334 ◽  
Author(s):  
Y.G. Choi ◽  
D.H. Ko ◽  
H.J. Kim ◽  
T.H. Chung
Keyword(s):  
Dimethyl Sulfide ◽  
Sulfur Compounds ◽  
Volatile Sulfur Compounds ◽  
Good Repeatability ◽  
Perfect Recovery ◽  
Gas Tight ◽  
Chemiluminescence Detector ◽  
Nanogram Level ◽  
Volatile Sulfur

A quantitative analytical method was used for detection of low level of volatile sulfur compounds (VSCs) using GC with a sulfur chemiluminescence detector (SCD) in this study. A linear response over the range of 2-90 ngS injected was obtained with a good repeatability or reproducibility. Equimolar response for H2S, DMS, MeSH, and EtSH was obtained by use of SCD and the response of the SCD is nearly equimolar for different sulfur compounds. It was possible to quantify the total VSCs as well as individual VSC using one of the standard VSCs. VSC recovery was measured with respect to some storing methods. An adsorption tube packed with molecular sieve 5A showed almost perfect recovery for both H2S and dimethyl sulfide (DMS) during 6 days at a dark state below 2°. Whereas, with a gas tight pyrex vial or tedlar bag, it was impossible to obtain the recovery of 50% after 6 days. It is strongly recommended to use the adsorption tube for determination of nanogram levels of volatile sulfur compounds and for storing and concentrating VSCs effectively with a minimum experimental error.

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.

scholarly journals Halitosis in Children Undergoing Full Mouth Rehabilitation under General Anesthesia

Children ◽  
2021 ◽  
Vol 8 (2) ◽  
pp. 149
Author(s):  
Noura A. AlMadhi ◽  
Ayman M. Sulimany ◽  
Hamad A. Alzoman ◽  
Omar A. Bawazir
Keyword(s):  
General Anesthesia ◽  
Sulfur Compounds ◽  
Parental Consent ◽  
Inclusion Criteria ◽  
Breath Sample ◽  
Volatile Sulfur Compounds ◽  
Before And After ◽  
Full Mouth Rehabilitation ◽  
Volatile Sulfur

Interventions and management modalities of pediatric halitosis have been suggested in the literature, however, the effect of full mouth rehabilitation (FMR) under general anesthesia (GA) on pediatric halitosis was not reported. Therefore, the present study was conducted to investigate parents’ perceptions of their child’s halitosis before and after FMR under GA; and to evaluate the effect of FMR on clinical halitosis. Fifty-seven children between 3–8 years old, scheduled for FMR under GA, were included after satisfying the inclusion criteria and upon parental consent. Parents’ perception of halitosis in their children was evaluated using a standardized questionnaire and a breath sample was collected to assess the level of volatile sulfur compounds (VSCs) using OralChromaTM before and after FMR under GA. Sixty percent (n = 34) of the parents perceived halitosis in their children before FMR and about 80% (n = 27) of them reported improvement in halitosis after FMR. Clinical halitosis was detected in 84.2% (n = 48) of the sample before treatment. A statistically significant reduction in halitosis was found in 56.3% (n = 27) of the children after treatment (p < 0.001). In conclusion, majority of parents perceived an absence or reduction of halitosis in their children following FMR and significant improvement of clinical halitosis.

scholarly journals Identification of Volatile Sulfur Compounds Produced by Schizophyllum commune

2021 ◽  
Vol 7 (6) ◽  
pp. 465
Author(s):  
Takahito Toyotome ◽  
Masahiko Takino ◽  
Masahiro Takaya ◽  
Maki Yahiro ◽  
Katsuhiko Kamei
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Lead Acetate ◽  
Schizophyllum Commune ◽  
Dimethyl Disulfide ◽  
Sulfur Compounds ◽  
Volatile Sulfur Compounds ◽  
Volatile Organic ◽  
Allergic Bronchopulmonary Mycosis ◽  
Volatile Sulfur

Schizophyllum commune is a causative agent of allergic bronchopulmonary mycosis, allergic fungal rhinosinusitis, and basidiomycosis. Diagnosis of these diseases remains difficult because no commercially available tool exists to identify the pathogen. Unique volatile organic compounds produced by a pathogen might be useful for non-invasive diagnosis. Here, we explored microbial volatile organic compounds produced by S. commune. Volatile sulfur compounds, dimethyl disulfide (48 of 49 strains) and methyl ethyl disulfide (49 of 49 strains), diethyl disulfide (34 of 49 strains), dimethyl trisulfide (40 of 49 strains), and dimethyl tetrasulfide (32 of 49 strains) were detected from headspace air in S. commune cultured vials. Every S. commune strain produced at least one volatile sulfur compound analyzed in this study. Those volatile sulfur compounds were not detected from the cultures of Aspergillus spp. (A. fumigatus, A. flavus, A. niger, and A. terreus), which are other major causative agents of allergic bronchopulmonary mycosis. The last, we examined H2S detection using lead acetate paper. Headspace air from S. commune rapidly turned the lead acetate paper black. These results suggest that those volatile sulfur compounds are potent targets for the diagnosis of S. commune and infectious diseases.

Evaluation of volatile sulfur compounds in the expired alveolar gas in patients with liver cirrhosis

1978 ◽  
Vol 85 (3) ◽  
pp. 279-284 ◽  
Author(s):  
Kaji Hiroshi ◽  
Hisamura Masaya ◽  
Saito Nariyoshi ◽  
Murao Makoto
Keyword(s):  
Liver Cirrhosis ◽  
Sulfur Compounds ◽  
Volatile Sulfur Compounds ◽  
Volatile Sulfur
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