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ICPMS daily performance check report, April 16, 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_000040755–000040869

Folder label: “ICPMS 4/16/02

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NYC 9/11 Public Portal Document

/E0750% - E WESTCHESTER COUNTY DEPT OF LABS AND RESEARCH Method 200.8 - Summary Report Sample ID: Blank Sample Date/Time: Tuesday, April 16, 2002 09:06:36 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NYC.mth Dataset File: d:\elandata\Dataset\new york city\Blank.546 pevwepP 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 12.000 0.000 ug/L > Se-1 45 488735.126 1.984 ug/L Cr 52 8293.868 3.727 ug/L Cr 53 662.031 4.156 ug/L Mn 55 1186.089 5.168 ug/L Ni 60 45.334 11.103 ug/L Cu 63 265.007 8.986 ug/L Cu 65 146.003 7.151 ug/L Zn 66 538.021 0.984 ug/L Zn 67 137.669 2.097 ug/L Zn 68 412.013 1.112 ug/L > Ge As Se Se Ag 72 75 77 82 107 97948.537 20.645 103.978 107.002 428.348 1.301 192.077 8.477 8.411 4.505 273027 ug/L ug/L ug/L ug/L ug/L Cd 111 1154.956 0.983 ug/L Cd 114 155.558 10.490 ug/L > In 115 1430217.261 1.640 ug/L Sb 121 42.001 21.429 ug/L Sb 123 42.559 7.096 ug/L Ba 135 62.001 12.177 ug/L Ba 137 92.335 21.992 ug/L > Tb 159 1892928.012 1.129 ug/L Ho 165 1848137.485 9.829 ug/L Tl 205 1801.533 17.522 ug/L Pb 208 2420.151 2.843 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

Sample ID: Blank Report Date/Time: Tuesday, April 16, 2002 09:08:23 Page 1

NYC-WTC_000040756

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NYC-WTC_000040756Source: NYC Law Department, mirrored locally

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