SPSFAM ERP

A Istd = the ISTD peak area

(c) Calculate the concentration of each analyte in the sample using the following calculation: ሺ / ሻ ൌ C ൈ V ୍ୗ ൈ C ୍ୗ W ൈ C ୍ୈ Where: C (µg/mL) = Concentration from the calibration curve V IS (mL) = Volume of the internal standard added to the sample C IS (µg/mL) = Concentration of the internal standard added to the sample W (g) = Sample weight C ID (µg/mL) = Final concentration of the internal standard in the calibration working standards