Laserfiche WebLink
Paragon Analytics <br />METALS CASE NARRATIVE <br />CEMEX, Ins. <br />A and C Pit <br />Order Number - 0604209 <br />L This report consists of 2 water samples. <br />2. The samples were received cool and intact on 04/25/06. <br />3. The samples were to be analyzed for dissolved metals. The samples had not been <br />filtered and preserved prior to receipt. The samples were filtered through a 0.45 <br />micron filter and preserved with nitric acid to a pH less than two prior to analysis. <br />4. The samples were prepazed for analysis based on Methods for the Determination <br />of Metals in Environmental Samples - Suppletent 1 procedures. <br />For analysis by ICP-MS, the samples were prepared following method 200.8 and <br />PA SOP 806 Rev. 12. The samples were not digested prior to analysis. <br />The samples were prepared for ICP-M5 analysis of selenium by passing the <br />samples and associated QC through a cation exchange column. The cation <br />exchange column removes cations from the matrix. <br />The samples were analyzed following Methods 1'or the Determination ofMetals in <br />Environmental Samples -Supplement 1 procedures. <br />Analysis by ICP-MS followed method 200.8 and PA SOP 827 Rev. 4. <br />The relationship between intensity and concentration for each element is <br />established using at least four standazds, one of which is a blank solution. A <br />calibration equation relating instrument response to concentration is developed <br />by the instrument software. The equation is ,a higher order polynomial. This <br />type of equation is used to improve quantitation accuracy at lower <br />concentrations where the relationship between concentration and instrument <br />response is non-linear, <br />During sample analysis concentrations are computed by the software and the <br />results are printed in ug/L. The validity of thc: calibration equation is tested by <br />analyzing the following solutions: a blank, a ]ow level check solution with <br />concentrations near the reporting limit, an Initial Calibration Verification (ICV) <br />standazd from a 2na source standard solution with concentrations neaz the <br />