Degradation of bromophenol blue molecule during argon plasma jet irradiation

Abstract

The aim of this paper is to study degradation of a bromophenol blue molecule (C19H10Br4O5S) using direct irradiation of cold atmospheric argon plasma jet. The pH of the bromophenol blue solution has been measured as well as its absorbance spectra and conductivity before and after the irradiation of non-thermal plasma jet in various time durations. The results indicated that the lengths of conjugated systems in the molecular structure of bromophenol blue decreased, and that the bromophenol blue solution was decolorized as a result of the decomposition of bromophenol blue. This result shows that non-thermal plasma jet irradiation is capable of decomposing, and can also be used for water purification.

Studying the non-thermal plasma jet characteristics and application on bacterial decontamination

“…Therefore, new methods of sterilization should be sought which have some advantages such as safety, convenience and lack of residual toxicity [4]. Nonthermal plasma is an alternative to conventional sterilization methods [5] and is considered as a new sterilization technique in the conservation of materials from bacteria [4]. This method has several advantages such as the possibility of inactivating the bacteria at low temperatures (near room temperature), being economical, absence of residual toxicity, and appropriateness for applications when product conservation is required [6,7].…”