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ICPMS daily performance check report, April 15, 2002

Machine-extracted title · confidence 95%

Daily instrument performance verification log for ICPMS analysis including intensity and standard deviation data for multiple elements.

NYC-WTC_000040648–000040698

Folder label: “ICPMS 4/15/02

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NYC 9/11 Public Portal Document

WESTCHESTER COUNTY DEPT OF LABS AND RESEARCH Method 200.8 - Summary Report Sample ID: ICV STD1 30 PPB Sample Date/Time: Monday, April 15, 2002 09:29:50 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NYC.mth Dataset File: d:\elandata\Dataset\new york cityICV STD1 30 PPB.492 Aliquot Volume (mL): Diluted To Volume (mL):

Concentration Results Analyte Mass Meas. Intens. Mean Meas. Intens. RSD Net Intens. Mean Cone. Mean Cone. RSD Sample Unit Be 9 12876.576 1.407 0.022 29.94029 1.88 ug/L > Se-1 45 574097.150 1.152 574097.150 ug/L Cr 52 318726.953 1.791 0.539 30.83475 2.91 ug/L Cr 53 36790.000 1.210 0.062 29.03823 1.32 ug/L Mn 55 491885.032 2.059 0.853 30.19733 3.20 ug/L Ni 60 74305.858 0.803 0.129 29.29821 1.94 ug/L Cu 63 186225.777 1.284 0.324 30.73586 1.77 ug/L Cu 65 89888.538 1.839 0.156 30.70328 2.98 ug/L Zn 66 59681.552 1.454 0.536 30.06266 3.03 ug/L Zn 67 10678.709 0.807 0.095 30.81911 2.49 ug/L Zn 68 42638.881 2.087 0.382 29.89852 1.83 ug/L > Ge 72 110132.671 1.871 110132.671 ug/L As 75 64886.135 1.999 0.589 29.52209 0.17 ug/L Se 77 8224.808 2.559 0.075 6-26.49375 2.80 ug/L Se 82 7327.692 6.525 0.065 28.97644 2.46 ug/L Ag 107 360623.817 0.015 0.232 28.38244 0.92 ug/L Cd 111 91074.498 2.085 0.058 29.15594 1.22 ug/L Cd 114 212866.163 0.563 0.137 28.77357 1.38 ug/L > In 115 1553242.045 0.929 1553242.045 ug/L Sb 121 308109.106 0.770 0.198 29.72300 1.69 ug/L Sb 123 231646.891 1.121 0.149 29.92341 0.21 ug/L Ba 135 95497.591 0.438 0.048 31.19483 2.67 ug/L Ba 137 162213.068 0.642 0.082 30.53721 2.50 ug/L > Tb 159 1971137.966 2.406 1971137.966 ug/L Ho 165 1971293.062 0.395 0.144 ug/L TI 205 852490.606 2.067 0.431 30.71728 1.55 ug/L Pb 208 1161634.515 0.869 0.589 31.0102-1 2.81 ug/L

QC Calculated Values Analyte Mass QC Std % Recovery Int Std % Recovery Spike % Recovery Dilution % Diff Dup. Rei. % Diff ' Be 9 > Sc-1 45 97.614 Cr 52 Cr 53 Mn 55

Sample ID: ICV STD1 30PPB Report Date/Time: Monday, April 15, 2002 09:32:35 Page 1

NYC-WTC_000040657

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