Analytical role of sodium dodecyl sulphate in ICP-AES

Effect of sodium dodecyl sulphate (sds) on sample transport efficiency,nebulisation and overall contribution in analysis using inductively coupled plasma atomic emission spectrometry (icp-aes) for different analytes has been studied. the objective of this study was to investigate the effect of surfactant on the quality of aerosols results in enhancement or depression of the final analyte signals the sds is anionic in nature,has been added to set of standards containing cr,fe,co,ni,cu,cd and pb in the presence of 0.01% - 2.0% hno3. typical property of surfactants i.e. lowering of surface tension has been exploited to modify the analytical procedures for analysis through icp-aes. determinations were carried out using 5 ppm analytes under a set of conditions i.e. below critical micelle concentration (cmc) at cmc and above cmc of the surfactant used. all glass meinhard pneumatic nebuliser was used for the nebulisation processes. the results have been explained on the basis of a mild action of the surfactants to modify the plasma analytical conditions due to the change in the overall physical parameters.