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ICPMS daily performance check report, April 9, 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_000040287–000040339

Folder label: “ICPMS 4/9/02

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NYC 9/11 Public Portal Document

WESTCHESTER COUNTY DEPT OF LABS AND RESEARCH Method 200.8 - Summary Report Sample ID: LFB 50 PPB Sample Date/Time: Tuesday, April 09, 2002 10:26:01 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NEWQ200.8.mth Dataset File: d:\elandata\Dataset\NEWQ\NEWQ\LFB 50 PPB.345 Aliquot Volume (mL): Diluted To Volume (mL):

Concentration Results Analyte Mass Meas. Intens. Mean Meas. Intens. RSD Net Intens. Mean Conc. Mean Conc. RSD Sample Unit Be 9 23953.422 0.490 0.043 51.86476 0.66 ug/L Sc-1 45 559331.366 1.118 559331.366 ug/L Cr 52 519894.980 1.296 0.915 50.02494 0.57 ug/L Cr 53 61558.673 0.782 0.109 50.23263 0.40 ug/L Mn 55 830375.534 1.623 1.482 50.82419 2.25 ug/L Ni 60 128794.815 2.146 0.230 49.96684 3.15 ug/L Cu 63 295151.202 1.704 0.527 50.00504 2.20 ug/L Cu 65 145701.649 1.725 0.260 50.13179 2.51 ug/L Zn 66 94233.492 0.534 0.894 51.26783 1.30 ug/L Zn 67 16785.654 2.008 0.159 51.02015 1.08 ug/L Zn 68 68428.970 1.681 0.649 50.52248 0.71 ug/L Ge 72 104896.122 1.022 104896.122 ug/L As 75 107414.476 1.017 1.021 50.25223 2.04 ug/L Se 77 9068.278 0.322 0.085 48.65762 1.33 ug/L Se 82 12496.044 2.311 0.117 51.32655 2.36 ug/L Ag 107 606569.133 1.556 0.405 49.88263 1.57 ug/L In 115 1494602.405 1.751 1494602.405 ug/L Sb 121 507625.074 0.759 0.340 50.17880 2.31 ug/L Sb 123 387116.901 0.656 0.259 49.47738 1.28 ug/L Ba 135 152134.337 1.047 0.075 48.20755 0.49 ug/L Ba 137 263840.854 2.630 0.131 47.85864 1.82 ug/L Ho 165 1823872.238 6.803 0.037 ug/L Tb 159 2014115.371 0.815 2014115.371 ug/L TI 205 1390352.539 0.179 0.690 48.74783 0.80 ug/L Pb 208 1867745.351 0.116 0.926 48.20447J / 1 0.91 ug/L

QC Calculated Values Analyte Mass QC Std % Recovery Int Std % Recovery Spike % Recovery Dilution % Diff Dup. Rel. % Diff I Be 9 I> SC-1 45 96.133 Cr 52 Cr 53 i Mn 55 i Ni 60 i Cu 63

Sample ID: LFB 50 PPB Report Date/Time: Tuesday, April 09, 2002 10:28:07 Page 1

NYC-WTC 000040302

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NYC-WTC_000040302Source: NYC Law Department, mirrored locally

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