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ICPMS daily performance check report, April 10, 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_000040452–000040596

Folder label: “ICPMS 4/10/02

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NYC 9/11 Public Portal Document

*e0 24 — AA08069 WESTCHESTER COUNTY DEPT OF LABS AND RESEARCH Method 200.8 - Summary Report Sample ID: Blank Sample Date/Time: Wednesday, April 10, 2002 09:31:56 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NEWQ200.8.mth Dataset File: d:\elandata\Dataset\NEWQ\NEWQ\Blank.419 Aliquot Volume (mL): Diluted To Volume (mL):

Concentration Results Analyte Mass Meas. Intens. Mean Meas. Intens. RSD Net Intens. Mean Conc. Mean Cone. RSD Sample Unit r Be 9 10.333 29.565 ug/L > Sc-1 45 562565.665 0.910 ug/L Cr 52 7721.689 1.422 ug/L Cr 53 876.384 2.351 ug/L Mn 55 2933.503 1.065 ug/L Ni 60 29.667 23.914 ug/L Cu 63 714.732 125.949 ug/L Cu 65 102.002 16.667 ug/L Zn 66 898.054 10.146 ug/L Zn 67 183.004 5.757 ug/L Zn 68 677.032 8.962 ug/L > Ge 72 108569.892 2.882 Reviewed by, ug/L As Se Se 75 77 82 348.092 150.003 220.338 28.407 10.392 6.933 (541124 ug/L ug/L ug/L Ag 107 877.051 10.002 ug/L > In 115 1490266.748 1.656 ug/L Sb 121 47.667 7.943 ug/L Sb 123 34.062 24.485 ug/L Ba 135 57.334 5.035 ug/L Ba 137 84.001 3.150 ug/L Ho 165 1644212.553 0.601 ug/L > Tb 159 1912549.150 1.068 ug/L TI 205 869.717 0.404 ug/L Pb 208 2030.776 2.225 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 Cr 52 Cr 53 Mn 55 Ni 60 Cu 63

Sample ID: Blank Report Date/Time: Wednesday, April 10, 2002 09:33:30 Page 1

NYC-WTC_000040453

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NYC-WTC_000040453Source: NYC Law Department, mirrored locally

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