Abstract

The reducing effects of fluorescent whitening agent-treated cotton under the action of chlorine dioxide were studied. Various factors were studied, including pH value, temperature, ClO2 concentration, and treating time. Furthermore, a simple method to evaluate the effect of fluorescence-reducing agent (ClO2) was proposed. By measuring the spectral radiance factor of the samples, the total absorption energy, total emission energy, and fluorescence quantum efficiency were calculated. It is demonstrated that fluorescence quantum efficiency could be used as a criterion to judge the fluorescence-reducing effect of ClO2.

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