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AZ =curvature coefficient <br />n =exponent coefficient <br />During sample analysis concentrations are computed by the softwaze and the <br />results aze printed in mg/L. The instrument softwaze does not provide a <br />printout which gives both intensity and concentration. The validity of the <br />calibration equation is tested by analyzing the following solutions: a blank, a <br />low level check solution with concentrations neaz the reporting limit, an Initial <br />Calibration Verification (ICV) standard from a 2"d source standard solution <br />with concentrations near the middle of the analytical range, a Continuing <br />Calibration Verification (CCV) standard with concentrations at two times <br />those in the ICV, and a readback of the highest calibration standard. <br />These solutions provide verification that the calibration equations are <br />functioning properly throughout the analytical range of the instrument. During <br />sample analysis dilutions are made for analytes found at concentrations above <br />the highest calibration standard. No results aze taken from extrapolations <br />beyond the highest standard. <br />Analysis by conventional ICP followed method 200.7 and PA SOP 805 Rev. 5. <br />Calibration of the conventional ICP is performed as described above for the <br />Trace ICP. <br />Analysis by ICP-MS followed method 200.8 and PA SOP 827 Rev. 2. <br />The relationship between intensity and concentration for each element is <br />established using at least four standards, one of which is a blank solution. A <br />linear regression is performed by the instrument softwaze to develop the <br />calibration equation. <br />During sample analysis concentrations are computed by the software and the <br />results aze printed in ug/L. The validity of the calibration equation is tested by <br />analyzing the following solutions: a blank, a low level check solution with <br />concentrations neaz the reporting limit, an Initial Calibration Verification <br />(ICV) standard from a 2"a source standazd solution with concentrations near <br />the middle of the analytical range, a Continuing Calibration Verification <br />(CCV) standard with concentrations near the middle of the analytical range <br />but different than those in the ICV, and a readback of the highest calibration <br />standard. <br />These solutions provide verification that the calibration equations are <br />functioning properly throughout the analytical range of the instrument. During <br />sample analysis dilutions are made for analytes found at concentrations above <br />the highest calibration standard. No results are taken from extrapolations <br />beyond the highest standard. <br />Analysis by CVAA followed method 245.1 and PA SOP 812 Rev. 10. <br />The relationship between intensity and concentration is determined daily, prior <br />to sample analysis. At least five standazds and a blank solution aze analyzed <br />~9 <br />11~U~ <br />