Determination of AsIII in drinking water by chemiluminescence with flow injection

On the basis of chemiluminescence reaction of potassium permanganate and luminol in sodium hydroxide medium,in which the chemiluminescence reaction could be enhanced by AsⅢ,a novel flow-injection chemiluminescence(CL) method for determination of AsⅢ in drinking water hd been developed.Results demonstrated that AsⅢ enhanced the chemiluminescence intensity of luminol-potassium permanganate,but the intensity decreased with the reduction of AsⅢ and concentration,the linear corelation were obviously observed within the range of 8.0×10-4～7.0×10-2 mg/mL and the detection limit of 5.4×10-5 mg/mL.This method showed the advantages of simple operation,high degree of automation,easy to rrun on-line and real-time warning detection,and ould be used as a rapid method for determination of AsⅢ in drinking water.