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A flow injection method has been developed for determination of silver. The method is based on a reduction reaction with sodium borohydride which leads to the formation of a colloidal species which is monitored at a wavelength of 390nm.The reaction variables flow rate, sodium borohydride concentration and pH, which affect sensitivity, were investigated and their effects were established using a two-levels,...
This paper is concerned with the application of complex geometrical optics equations to sample thermal parameters determination by the photodeflection method. The thermal diffusivity of a sample is determined using the four parameters least-squares-fitting of theoretical dependence of normal photodeflection signal on angular modulation frequency to the experimental data. The calculation of the signal...
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