Simultaneous microdetermination of sulphur, carbon and nitrogen by reaction gas chromatography

Automated determination of sulphur in organic compounds

“…A similar concept of estimating C, H, N and S in non-weighed samples by one procedure was presented by Rezl and Buresowa [42].…”

Simultaneous Determination of SO3(g) and SO2(g) in a Flowing Gas

“…In some cases, chemical methods have been combined to allow determination of both analytes in a common matrix. Most of them involve simultaneous absorption of the analytes in a liquid (e.g., in an alkali or a H 2 O 2 solution) followed by chemical or instrumental analysistypically acid/base or redox titrations, ,− , ion chromatography, or gas chromatography ,, …”

“…(b) For SO 3(g) , these include the following: IR absorption (bands at 527 and 1391 cm -1 ); UV absorption; ,, mass spectrometry; ,, Raman spectrometry (band at 1067 cm -1 ); gas chromatography; , and solid-state potentiometric detection. , …”

“…Most of them involve simultaneous absorption of the analytes in a liquid (e.g., in an alkali or a H 2 O 2 solution) followed by chemical or instrumental analysisstypically acid/base or redox titrations, 2,5-7,23 ion chromatography, 1 or gas chromatography. 32 Alternatively, one of the gases is made to react with a dissolved reagent (typically iodine species) 24,[33][34][35] or with a solid substrate that retains it, and the other gas is then analyzed. 2,36,37 A more promising approach from the standpoint of flow analysis involves passing the gas matrix first through an isopropanol solution, which selectively dissolves SO 3(g) and inhibits oxidation of SO 2(g) , and then through a hydrogen peroxide solution, which dissolves the SO 2(g) and oxidizes it to SO 4 2-.…”

“…(a) For SO 2(g) , these include the following: fluorescence (emission between 2400 and 4200 A°); [39][40][41] UV absorption (normally between 3200 and 1800 A°); 8,[42][43][44] IR absorption (bands at 518, 1151, and 1361 cm -1 ), 45,46 or with a quantum cascade laser, 47 or with superimposed polarized IR light; 48 mass spectrometry; [49][50][51] Raman spectrometry (band at 1151 cm -1 ); 52 gas chromatography 32,[53][54][55][56] or ion-exchange chromatography; 1,57 solid-state potentiometric detection; [58][59][60][61][62][63][64][65] changes in the resistance of metal oxide surfaces; [66][67][68] changes in the capacitance of SO 2 -sensitive films; 69,70 and coulometry. 71 (b) For SO 3(g) , these include the following: IR absorption (bands at 527 and 1391 cm -1 ); 72 UV absorption; 8,73,74 mass spectrometry; 50,51,75 Raman spectrometry (band at 1067 cm -1 ); 52 gas chromatography; 32,54 and solid-state potentiometric detection. 58,65…”