Determination of platinum in sarcheshmeh copper complex molybdenum sulfide concentrate sample by solid phase extraction

Fire Assay Test Method [1] despite the high Precision and accuracy in Precious Metals like Platinum Measurement, has major disadvantages such as high energy consumption, the environmental pollutants, human risks and too much time of Analysis. Today, all these problems are fundamental and important crises. Therefore, Utilization a test method that hasn t these problems is necessary. By Solid phase extraction technique, concentration and separation of small amounts of platinum in Sarcheshmeh Copper Complex Molybdenum sulfide concentrate samples was presented. In this technique Rubeanic Acid [2] as a Ligand and alumina as an adsorbent before determination by flame atomic absorption were used. Critical parameters of this technique such as pH[3], flow rate of sample and elution[4], adsorbent weight and type, concentration and volume of Elution, step by step was achieved[5]. With all the achievements and remove interference species, Platinum measurement of real samples was done. To investigate accuracy of the method, it is necessary to compare the results obtained with the standard method for Platinum Determination and since this method is not registered. Validation process with three method was performed, analysis of standard samples (CRM); Analysis Results Compare with Fire Assay standard method that samples were analyzed by the AHK reference laboratory in England and the third method using of spiking technique on samples with Determined value (RM). Statistical evaluations of Validation Process by using of Minitab software were performed. Limit of detection (LOD) based on three times the standard deviation of Blank with five times measurements, 2.23 was calculated. The linear range of calibration curve in the range of 1 to 100 with the correlation coefficient 0.9954 was obtained.