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Workplace monitoring of hydrogen peroxide using titanyl-coated sorbents
G Hecht1, S Aubert, F Gerardin
1Institut National de Recherche et de Sécurité, Avenue de Bourgogne, BP 27, F-54501 Vandoeuvre les Nancy, France. hechtg@inrs.fr
Abstract:
The current methods of sampling hydrogen peroxide, based on bubbling in acid solutions (titanium tetrachloride or titanium oxysulfate), are unsuitable for personal sampling. An alternative medium has been developed: silica gel coated with titanium oxysulfate. Sample tubes of this new sampling medium are suitable for personal sampling. The sampling performance is the same as that of the methods based on bubbling, but the tubes must be desorbed as soon as possible, even if the spectrophotometric analysis can be postponed. Special emphasis has been placed on the possible interference by peracetic acid, which is currently used in conjunction with hydrogen peroxide in the food industry.