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Document / 53 pages

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

Ae 2848/ - FQ683 WESTCHESTER COUNTY DEPT OF LABS AND RESEARCH Method 200.8 - Summary Report Sample ID: Blank Sample Date/Time: Monday, April 22, 2002 11:50:22 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.491 Aliquot Volume (mL): ‘ s yVoonet prhnd 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 12.000 60.093 ug/L > Se-1 45 424384.632 2.885 ug/L Cr 52 6963.071 3.484 ug/L Cr 53 722.703 4.092 ug/L Mn 55 1706.511 0.654 ug/L Ni 60 198.671 5.899 ug/L Cu 63 434.348 5.735 ug/L Cu 65 225.005 10.676 ug/L Zn 66 629.695 2.431 ug/L Zn 67 139.336 15.432 ug/L Zn 68 493.018 8.793 ug/L

777C/% > Ge 72 85558.970 1.400 ug/L As 75 63.311 49.920 ug/L Se 77 119.577 6.555 ug/L Se 82 94.335 9.850 ug/L Ag 107 594.025 0.505 ug/L > In 115 1327330.894 1.453 ug/L Sb 121 45.001 13.333 ug/L Sb 123 32.268 11.374 ug/L Ba 135 78.334 3.213 ug/L Ba 137 120.669 6.275 ug/L Ho 165 1929473.921 1.566 ug/L > Tb 159 1947220.614 1.924 ug/L Hg 201 74.334 15.001 ug/L Hg 202 145.336 6.961 ug/L Tl 205 1173.087 3.987 ug/L Pb 208 2085.448 0.651 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 Cr 52 Cr 53 Mn 55

Sample ID: Blank Report Date/Time: Monday, April 22, 2002 11:52:03 Page 1

NYC-WTC_000040872

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NYC-WTC_000040872Source: NYC Law Department, mirrored locally

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