Abstract
Aim: The purpose of this article is to present a method of eliminating the consequence of contamination (decontamination and disinfection) from delicate surfaces including; the interior of containers and aircraft, insulating elements of protective clothing and electronic equipment, with the aid of hydrogen peroxide applied in vapour form.
Introduction: Elimination of contamination is a very difficult process in terms of application and technology because it relates to contaminated surfaces, which after a process of application, should be rendered safe for the environment and use by humans. In the main, this applies to indoor facilities, apparatus, documentation and specialised equipment. Currently, the risk of contamination or infection of rescue teams, or military contingents is high. Polish Armed Forces have the means to perform decontamination processes using so called ‘wet methods’, where active ingredients are based on aqueous solutions or organic liquid mixtures. However, ‘wet methods’ are unsuitable for decontamination of, for example, electronic equipment, because in most circumstances such equipment is likely to be permanently damaged during the process. Irrespective of contamination type, it is important to quickly reach the source of threat and successfully eliminate it. One practical approach, to address the problem, may lie in the use of hydrogen peroxide, in vapour form, delivered by a suitable device to eliminate contamination in the field.
Methodology: The methodology for determining biocidal effect of hydrogen peroxide gas was developed on the basis of following standards: EN 13697, EN 14561, EN 14,562th. The following substances were used during research tests: Enterococcus hirae (gram-positive bacteria), Escherichia coli (gram-negative bacteria) Geobacillus stearothermophilus (bacterial spores), Candida albicans (yeast fungus) and Aspergillus niger (filamentous fungus). An examination of the effectiveness of sulfur mustard decontamination with gaseous hydrogen peroxide was carried out using methodology RTMO-86 (classified material). Analysis of residual contamination was performed using GCMS. The impact of contamination elimination on materials and equipment was evaluated on the basis of standards and internal procedures.
Conclusions: Achievement of positive test outcomes for successful disinfection and decontamination, and compatibility of hydrogen peroxide, in vapour form, with materials and apparatus embraced by research. Recommendation, after supplementary studies, for the development and implementation of the process.
Keywords: disinfection, decontamination, hydrogen peroxide in vapour form
Type of article: review article