Solubility of Total Reduced Sulfurs (Hydrogen Sulfide, Methyl Mercaptan, Dimethyl Sulfide, and Dimethyl Disulfide) in Liquids

2007 ◽  
Vol 52 (1) ◽  
pp. 2-19 ◽  
Author(s):  
Maria C. Iliuta ◽  
Faïçal Larachi
Keyword(s):  
Hydrogen Sulfide ◽  
Dimethyl Sulfide ◽  
Dimethyl Disulfide ◽  
Methyl Mercaptan

VSC Adsorption Capability of Layered Double Hydroxide Containing Transition Metal

2014 ◽  
Vol 21 ◽  
pp. 71-74
Author(s):  
Yoshiyuki Yokogawa ◽  
Hiroya Sano ◽  
Shota Namba ◽  
Kazuo Fujii ◽  
Yuki Morita ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Sulfide ◽  
Dimethyl Sulfide ◽  
Zinc Ion ◽  
Methyl Mercaptan ◽  
Adsorptive Property ◽  
Double Hydroxide ◽  
Double Hydroxides ◽  
Adsorption Capability ◽  
Fast Removal

Many people worldwide assess themselves as having halitosis, often caused by bio-film and microbial putrefaction of the debris in the mouth, leading to the production of mal-odorous compounds, volatile sulfur compounds (VSC) such as hydrogen sulfide (H2S), methyl mercaptan and dimethyl sulfide. Some desulfurizing agents such as CaO and Na2CO3 in the industry are widely used, but there are few dental desulfurizing agents or adsorbents for removal of VSC. Ag ion exchanged zeolite material showed a high adsorptive property of H2S in aqueous solution (H2S water), however Ag sulfides were formed in aqueous solution. The VSC adsorption capabilities of layered double hydroxides, of which composition is A1-xAlx(OH)2Bx/n·mH2O, where A is Mg and/or Zn and B is CO32-, in aqueous medium was studied by FPD/GC. The concentration of H2S fell to 0% in 2 h when the Zn hydrotalcite was used, while that decreased to 20% in 18 h when the Mg hydrotalcite heated at 500 °C was used. The zinc ion was not detected in the H2S water after soaking for 18 hours.The Zn hydtotalcite is expected to be likely adsorbent for the fast removal of VSC from the mouth.

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.

scholarly journals Pengaruh Cara Aplikasi Pasta Gigi Herbal terhadap Produksi Volatile Sulfur Compound

2015 ◽  
Vol 20 (2) ◽  
pp. 172
Author(s):  
Suryono Suryono
Keyword(s):  
Hydrogen Sulfide ◽  
Oral Cavity ◽  
Dimethyl Sulfide ◽  
Sulfur Compound ◽  
Normal Subjects ◽  
Methyl Mercaptan ◽  
Volatile Sulfur Compound ◽  
The Status ◽  
Bad Breath ◽  
Volatile Sulfur

Volatile Sulfur Compound (VSC) merupakan komponen gas yang dihasilkan oleh bakteri dalam rongga mulut, terdiri dari Hidrogen sulfide, Methyl Mercaptan dan Dimethyl Sulfide. Ketiga komponen gas tersebut sering digunakan sebagai indikator untuk menilai status bau mulut seseorang. Pasta gigi berbasis herbal telah dilaporkan pada penelitian sebelumnya mampu menghambat pertumbuhan kuman penyebab penyakit periodontal. Bakteri plak dalam rongga mulut dapat dikurangi melalui cara gosok gigi dan/atau penggunaan material antiseptik. Dua kelompok subjek terpilih diberikan perlakuan dengan menggunakan pasta gigi herbal dengan cara yang berbeda, kelompok pertama dengan cara menggosok gigi dengan pasta gigi herbal sesuai dengan cara yang sudah biasa mereka lakukan dan kelompok ke-2 diberikan perlakuan dengan cara mengoleskan pasta herbal di daerah molar kiri dan kanan rahang atas. Pengambilan sampel nafas dilakukan sebelum perlakuan, 5 menit dan 2 jam paska menggosok gigi atau mengoles pasta herbal. Hasil pengamatan menunjukkan bahwa penggunaan pasta gigi herbal dengan cara sikat gigi maupun pengolesan memiliki pola yang sama pada masing-masing komponen gas sulfur yaitu peningkatan pada lima menit paska aplikasi kemudian menurun pada 2 jam paska aplikasi. Pasta gigi herbal yang diaplikasikan dengan cara gosok gigi maupun dengan cara pengolesan mempengaruhi kadar VSC yaitu yaitu menurunkan kadar Hydrogen sulfide, relatif stabil kadar methyl mercaptan dan terjadi peningkatan kadar dimethyl sulfide. Pasta gigi berbasis herbal dapat digunakan dengan cara sikat gigi maupun pengolesan untuk menurunkan kadar gas VSC, khususnya Hydrogen sulfide pada subjek normal.Effect of Herbal Toothpaste Application Method on Production of Volatile Sulfur Compound. Volatile sulfur compound (VSC) is a component of the gas produced by bacteria in the oral cavity, consisting of hydrogen sulfide,methyl mercaptan and dimethyl sulfide. This gas is often used as an indicator to assess the status of bad breath. Herbalbased dental paste has been reported in previous studies to inhibit the growth of germs that cause periodontal disease. Plaque Bacteria in the oral cavity can be reduced by tooth brushing and/or the use of antiseptic material. Two groups of subjects chosen were given treatment using herbal toothpaste in different ways: the first group was by brushing teeth with herbal toothpaste the way they usually do it and the second group was given the treatment by applying herbal paste in the left and right molar region of maxilla. The sampling was performed before treatment, 5 minutes and 2 hours after brushing teeth or applying herbal paste. The result of the experiment indicates that the use of herbal toothpaste with toothbrush and applying method has the same pattern on each component of the sulfur gas that is an increase after five minutes post-application and then a decrease after 2 hours post-application. Herbal toothpaste which is applied by means of brushing or by applying to the teeth affected the levels of VSC components; the level of Hydrogen sulfide decreased, the level of methyl mercaptan was relatively stable, and the level of dimethyl sulfide increased. Herbal toothpaste can be used in a common brushing way or by applying it to the teeth to reduce the levels of VSC gases, especially Hydrogen sulfide in normal subjects.

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.

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