Determination of Benzhexol Hydrochloride by Electrochemiluminescence in the Presence of Sodium Dodecyl Benzene Sulfonate

KeyWord:benzhexol hydrochloride  sodium dodecyl benzene sulfonate(SDBS)  Ru(bpy)2+3  electrochemiluminescence

Abstract:

      In the presence of sodium dodecyl benzene sulfonate(SDBS),the electrochemical and electrochemiluminescence(ECL) characteristics of the Ru(bpy)2+3- benzhexol hydrochloride(BH) system at Au electrode were studied by ECL and cyclic voltammetric(CV) method.The results showed that the ECL intensity of Ru(bpy)2+3 at Au electrode was enhanced significantly in the presence of BH.In the presence of SDBS,the ECL intensity of Ru(bpy)2+3- benzhexol hydrochloride system was enhanced about 16 times.Based on this,a new electrochemiluminescence method was established for the determination of BH.Under the optimum condition,the enhanced ECL intensity had a good linear relationship with the concentration of BH in the range of 4.0¡Á10-7-1.0¡Á10-4 mol/L,with a detection limit of 1.11¡Á10-9 mol/L.The RSD(n=10) of ECL intensities for the determinations of 1.0¡Á10-5 mol/L BH were 3.2%.The recoveries for the samples were between 96% and 108% with RSD of 4.3%.With high selectivity and sensitivity,this proposed method was applied in the determination of BH in real sample with satisfactory results.