Development of the flow injection method (FIA) for determination the colloidal and ionic silver in water. The newly developed method is based on on-line generation of silver colloids by sodium borohydride (NaBH4). The reaction variables such as the flow rate, length of the mixing coil, volume of the sample loop, concentration and pH of the sodium borohydride, which affect sensitivity were investigated and the experimental setup was optimized. Further improvements in sensigivity of the method were achieved by the use of collinear dual beam thermal lens spectrometric (TLS) detection unit. TLS detection resulted in significant decrease of the limit of detection (LOD) from 50 g/L provided by the transmission mode spectrometry to 1.5 g/L in case of TLS.. The optimized method was applied for the analysis of a drinking water sample provided for the launch of the Automated Transfer Vehicle (ATV) module Jule Verne to the International Space Station (March 9, 2008).
COBISS.SI-ID: 1635323