. "1752-7155" . "RIV/61388955:_____/08:00314979" . . "P(GA202/06/0776), Z(AV0Z40400503)" . . "3"^^ . "sulfur-containing compounds; SIFT-MS"@en . "2" . "Smith, D." . "1"^^ . . "A study of sulfur-containing compounds in mouth- and nose-exhaled breath and in the oral cavity using selected ion flow tube mass spectrometry" . "Journal of Breath Research" . "A study of sulfur-containing compounds in mouth- and nose-exhaled breath and in the oral cavity using selected ion flow tube mass spectrometry"@en . . . "-" . . "Hmotnostn\u00ED spektrometrie v proudov\u00E9 trubici s vybran\u00FDmi ionty (SIFT-MS) byla pou\u017Eita pro studium koncentrac\u00ED l\u00E1tek obsahuj\u00EDc\u00EDch s\u00EDru H2S (pomoc\u00ED reagentu H3O+), CH3SH (H3O+), (CH3)2S (O2+), (CH3)2S2 (NO+) a CS2 (O2+) ve vzduchu vydechovan\u00E9m \u00FAsty a nosem a v dutinn\u011B \u00FAstn\u00ED. Hlavn\u00EDm c\u00EDlem bylo vyvinout metodu pro identifikaci a kvantifikaci t\u011Bchto l\u00E1tek p\u0159\u00EDtomn\u00FDch v koncentrac\u00EDch \u0159\u00E1dov\u011B jedn\u00E9 molekuly na miliardu molekul vzduchu. M\u011B\u0159en\u00ED H2S pomoc\u00ED reagentu H3O+ uk\u00E1zalo, \u017Ee nedoch\u00E1y\u00ED k p\u0159ekryvu s iyobarick\u00FDmi ionty jin\u00FDch l\u00E1tek a \u017Ee tzpick\u00E1 koncentrace v dechu je v rozsahu 20-70 ppb. Pro CH3SH, bylo t\u0159eba prozkoumat kinetiku reakc\u00ED iont\u016F H3O+, NO+ and O2+ s touto l\u00E1tkou. Koncentrace CH3SH, (CH3)2S a (CH3)2S2 v \u00FAstn\u00ED dutin\u011B byly nam\u011B\u0159eny jako ni\u017E\u0161\u00ED ne\u017E 10 ppb. Uvedeny jsou tak\u00E9 v\u00FDsledky m\u011B\u0159en\u00ED koncentrac\u00ED l\u00E1tek obsahuj\u00EDc\u00EDch s\u00EDru ve v\u00FDparech bakteri\u00E1ln\u00ED kultury Pseudomonas."@cs . "A study of sulfur-containing compounds in mouth- and nose-exhaled breath and in the oral cavity using selected ion flow tube mass spectrometry" . . . . "We have carried out a selected ion flow tube mass spectrometry (SIFT-MS) study of the concentrations of the sulfur-containing compounds H2S (using H3O+ precursor ions), CH3SH (H3O+), (CH3)2S (O2+), (CH3)2S2 (NO+) and CS2 (O2+) in single exhalations of mouth-exhaled breath and nose-exhaled breath and in the static gas in the oral cavity for two healthy volunteers. The primary purpose of the study was to show how compounds present in breath at levels as low as a part per billion (ppb) can be identified and quantified. The H2S measurements using H3O+ precursor ions provide breath concentration as typically 20\u201370 ppb. For CH3SH, we had to study the kinetics of its reactions with the SIFT-MS reagent ions H3O+, NO+ and O2+ in order to provide the required kinetics library data for this compound. It is seen that CH3SH, (CH3)2S and (CH3)2S2 are present in the mouth breath/cavity at lower levels of <10 ppb."@en . . "Pysanenko, A." . "\u0160pan\u011Bl, Patrik" . "We have carried out a selected ion flow tube mass spectrometry (SIFT-MS) study of the concentrations of the sulfur-containing compounds H2S (using H3O+ precursor ions), CH3SH (H3O+), (CH3)2S (O2+), (CH3)2S2 (NO+) and CS2 (O2+) in single exhalations of mouth-exhaled breath and nose-exhaled breath and in the static gas in the oral cavity for two healthy volunteers. The primary purpose of the study was to show how compounds present in breath at levels as low as a part per billion (ppb) can be identified and quantified. The H2S measurements using H3O+ precursor ions provide breath concentration as typically 20\u201370 ppb. For CH3SH, we had to study the kinetics of its reactions with the SIFT-MS reagent ions H3O+, NO+ and O2+ in order to provide the required kinetics library data for this compound. It is seen that CH3SH, (CH3)2S and (CH3)2S2 are present in the mouth breath/cavity at lower levels of <10 ppb." . . "[562652C86EC2]" . "13"^^ . . . "GB - Spojen\u00E9 kr\u00E1lovstv\u00ED Velk\u00E9 Brit\u00E1nie a Severn\u00EDho Irska" . "354554" . "Studium l\u00E1tek obsahuj\u00EDc\u00EDch s\u00EDru ve vzduchu vydechovan\u00E9m \u00FAsty a nosem a v dutinn\u011B \u00FAstn\u00ED pomoc\u00ED hmotnostn\u00ED spektrometrie v proudov\u00E9 trubici s vybran\u00FDmi ionty"@cs . . "Studium l\u00E1tek obsahuj\u00EDc\u00EDch s\u00EDru ve vzduchu vydechovan\u00E9m \u00FAsty a nosem a v dutinn\u011B \u00FAstn\u00ED pomoc\u00ED hmotnostn\u00ED spektrometrie v proudov\u00E9 trubici s vybran\u00FDmi ionty"@cs . "A study of sulfur-containing compounds in mouth- and nose-exhaled breath and in the oral cavity using selected ion flow tube mass spectrometry"@en . . "RIV/61388955:_____/08:00314979!RIV09-AV0-61388955" .