caa a22 4500 465746306 CHVBK 20180323111821.0 cr unu---uuuuu 170327e19900101xx s 000 0 eng 10.1007/BF00331387 doi (NATIONALLICENCE)springer-10.1007/BF00331387 Analysis of water in liquid and solid samples by headspace gas chromatography [Elektronische Daten] Part II: Insoluble solid samples by the "suspension approach” [B. Kolb, M. Auer] Summary: The water content of solid samples, which are insoluble in organic solvents, is determined by equilibrium headspace gas chromatography after suspending the samples in a water-miscible dry solvent such as ethylene glycol monomethylether. The accuracy of this ‘suspension approach' was tested with sodium tartrate-2-hydrate, a calibration standard for the Karl-Fischer titration, and good agreement was found. Partical applications are given for water analysis in an ionic detergent, in paper, and in solid food samples such as instant soup or drink powder and roasted coffee. The preferred calibration procedure was the standard addition technique, but internal or external standard calibration is also possible, particularly in the case of insoluble samples since the water only is extracted into the solvent. The resulting aqueous solution in the organic solvent represents an ideal matrix for all calibration techniques. The suspended particles from the solid sample were found not to cause additional matrix effects. Springer-Verlag, 1990 Kolb B. Bodenseewerk Perkin-Elmer GmbH, D-7770, Überlingen, Federal Republic of Germany aut Auer M. Bodenseewerk Perkin-Elmer GmbH, D-7770, Überlingen, Federal Republic of Germany aut Fresenius' Journal of Analytical Chemistry Springer-Verlag 336/4(1990-01-01), 297-302 0937-0633 336:4<297 1990 336 216 https://doi.org/10.1007/BF00331387 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00331387 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kolb B. Bodenseewerk Perkin-Elmer GmbH, D-7770, Überlingen, Federal Republic of Germany aut NATIONALLICENCE 700 1- Auer M. Bodenseewerk Perkin-Elmer GmbH, D-7770, Überlingen, Federal Republic of Germany aut NATIONALLICENCE 773 0- Fresenius' Journal of Analytical Chemistry Springer-Verlag 336/4(1990-01-01), 297-302 0937-0633 336:4<297 1990 336 216 Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 465746225 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer