design of a simple laser system for nephelometric determination of anions

a simple analytical system suitable for nephelometric measurements is introduced in this article. the electronic and optical components are simplified so that the apparatus is easily assembled from materials that are generally available. this instrument is designed for the efficient measurement of anions, and microgram quantities of ions may be determined by a convenient method of titration. using this systarn, the ion detection is performed on several species, and the preliminary results are reported here. the results from the determination of sulfate and chloride ions show a good detection limit(10 m), and a linearity range of 10 -10 m