Method For Determining Concentration Of Arsenic, Mercury And Lead In Aluminum Hydroxide For Filler And Pseudo Boehmite

Aluminum hydroxide for filler and pseudo boehmite as with the hydrogen the filler has low price and good optical function, flame retardant, not poisonous and harmless advantage.It extensively be applied to the main raw material of plastics, rubber, artificial stone, artificial agate profession. This experiments adopt Hydride Generation Technique and Iinductively Coupled Plasma emission spectrometry analysis (HG-ICP-AES) to aluminum hydroxide for filler and pseudo boehmite, in the trace elements Arsenic,Mercury and Lead content analysis methods were studied to determine the relevant conditions.In this paper, the sample is dissolved with hydrochloric acid, using the thiourea as the masking agent to eliminate matrix amd other impurity elements interference Since this method uses a hydride generator, measured with the Al matrix are separated, so that was better to be elements of accumulation, The method for Determining concentration of Lead using potassium ferricyanide oxidant; The method for Determining concentration of arsenic, mercury using potassium iodide,ascorbic acid and thiourea reducer as reducing agent Final projections based on this method of data precision and accuracy, and thus obtained detection limit of the measured elements.Since this method uses a hydride generator, measured with the Al matrix are separated, so that it was better to be elements of accumulation, making the measured elements arsenic, mercury, lead a very low detection limit and stability of good results. This method is simple, rapid, accurate, and was recommended as the industry standard.