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ICPMS daily performance check report, April 22, 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_000040871–000040923

Folder label: “ICPMS 4/22/01

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NYC 9/11 Public Portal Document

WESTCHESTER COUNTY DEPT OF LABS AND RESEARCH Method 200.8 - Summary Report Sample ID: STD Hg CHECK 0.4 PPB Sample Date/Time: Monday, April 22, 2002 12:30:04 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NEWQ200.8.mth Dataset File: d:\elandata\Dataset\NEWQ\NEWQ\STD Hg CHECK 0.4 PPB.500 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 7.000 57.143 -0.000 -0.01967 63.95 ug/L > Se-1 45 472429.602 0.766 472429.602 ug/L Cr 52 8481.374 1.929 0.002 0.08320 13.56 ug/L Cr 53 722.036 6.023 -0.000 -0.07830 46.93 ug/L Mn 55 2146.942 5.184 0.001 0.01811 46.02 ug/L Ni 60 959.060 2.920 0.002 0.32419 3.12 ug/L Cu 63 1345.780 2.762 0.002 0.16647 4.30 ug/L Cu 65 678.699 1.106 0.001 0.16696 0.98 ug/L Zn 66 2447.021 2.008 0.019 1.16584 0.68 ug/L Zn 67 411.347 7.518 0.003 0.94558 14.26 ug/L Zn 68 1793.528 1.710 0.014 1.11005 2.88 ug/L > Ge 72 91162.446 1.526 91162.446 ug/L As. 75 -5.563 678.644 -0.001 -0.04020 52.01 ug/L Se 77 112.369 10.216 -0.000 -0.09260 66.62 ug/L Se 82 90.001 15.674 -0.000 -0.05363 121.59 ug/L Ag 107 917.389 6.309 0.000 0.03142 17.68 ug/L in 115 1328933.404 0.211 1328933.404 ug/L Sb 121 67.668 11.945 0.000 0.00257 35.43 ug/L Sb 123 44.740 20.133 0.000 0.00182 71.95 ug/L Ba 135 689.366 6.107 0.000 0.22534 6.57 ug/L Ba 137 1146.084 1.816 0.001 0.21740 1.57 ug/L Ho 165 1846491.302 1.557 0.007 ug/L > Tb 159 1850979.029 0.444 1850979.029 ug/L Hg 201 596.359 3.253 0.000 0.43208 4.05 ug/L Hg 202 1349.447 2.290 0.001 0.44543 3.02 ug/L TI 205 1794.528 2.444 0.000 0.02679 6.11 ug/L Pb 208 12535.827 1.089 0.006 0.30886 1.72 ug/L

QC Calculated Values Analyte Mass QC Std % Recovery Int Std % Recovery Spike % Recovery Dilution % Diff Dup. Rei. % Diff ‘ Be 9 > Sc-1 45 111.321 Cr 52 Cr 53 Mn 55

Sample ID: STD Hg CHECK 0.4 PPB Report Date/Time: Monday, April 22, 2002 12:32:19 Page 1

NYC-WTC_000040890

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