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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 12:36:03 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.501 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 8.667 13.323 -0.000 -0.01363 29.12 ug/L > Se-1 45 456921.405 0.992 456921.405 ug/L Cr 52 9523.181 17.417 0.004 0.23792 77.86 ug/L Cr 53 856.051 25.211 0.000 0.07769 283.21 ug/L Mn 55 1996.906 4.508 0.000 0.01209 59.94 ug/L Ni 60 902.054 5.037 0.002 0.31268 6.94 ug/L Cu 63 1300.106 4.131 0.002 0.16613 5.14 ug/L Cu 65 642.696 5.658 0.001 0.16136 7.67 ug/L Zn 66 2383.003 2.527 0.020 1.18613 3.86 ug/L Zn 67 424.681 6.532 0.003 1.05294 10.32 ug/L Zn 68 1798.863 2.302 0.015 1.17714 3.57 ug/L > Ge 72 87679.335 0.361 87679.335 ug/L As 75 -27.477 146.460 -0.001 -0.05253 43.42 ug/L Se 77 109.944 8.412 -0.000 -0.08005 76.53 ug/L Se 82 83.335 9.321 -0.000 -0.06987 60.09 ug/L Ag 107 485.685 10.399 -0.000 -0.00869 62.16 ug/L In 115 1277489.745 0.980 1277489.745 ug/L Sb 121 49.334 11.526 0.000 0.00071 96.60 ug/L Sb 123 46.650 6.105 0.000 0.00238 21.04 ug/L Ba 135 635.029 5.928 0.000 0.21700 6.37 ug/L Ba 137 1123.414 4.986 0.001 0.22439 5.22 ug/L Ho 165 1742717.252 0.661 -0.003 ug/L > Tb 159 1763259.298 0.437 1763259.298 ug/L Hg 201 564.356 1.083 0.000 0.42882 1.31 ug/L Hg 202 1245.765 2.690 0.001 0.43010 3.49 ug/L Tl 205 1717.513 3.122 0.000 0.02713 9.21 ug/L Pb 208 12387.748 0.531 0.006 0.32256 0.84 ug/L

QC Calculated Values Analyte Mass QC Std % Recovery Int Std % Recovery Spike % Recovery Dilution % Diff Dup. Rei. % Diff ’ Be 9 > Se-1 45 107.667 Cr 52 Cr 53 Mn 55

Sample ID: STD Hg CHECK 0.4 PPB Report Date/Time: Monday, April 22, 2002 12:38:18 Page 1

NYC-WTC_000040892

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