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ICPMS daily performance check report, April 23, 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_000040976–000041063

Folder label: “ICPMS 4/23/02

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NYC 9/11 Public Portal Document

AAOg937 - A=Or9s9 WESTCHESTER COUNTY DEPT OF LABS AND RESEARCH Method 200.8 - Summary Report Sample ID: Blank Sample Date/Time: Tuesday, April 23, 2002 09:11:47 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NYC.mth Dataset File: d:\elandata\Dataset\new york cit\Blank.653 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 9.000 61.864 ug/L > Se-1 45 464358.795 2.436 ug/L Cr 52 7310.679 1.783 ug/L Cr 53 727.370 1.411 ug/L Mn 55 968.062 9.342 ug/L Ni 60 208.671 8.374 ug/L Cu 63 446.682 3.570 ug/L Cu 65 240.006 11.924 ug/L Zn 66 762.706 7.551 ug/L Zn 67 166.670 4.661 Reviewed by, ug/L Zn > Ge As 68 72 75 589.358 89877.684 51.413 1.274 0.798 53.564 46 6**0 ug/L ug/L ug/L Se 77 109.418 20.376 ug/L Se 82 104.335 10.249 ug/L Ag 107 647.030 4.019 ug/L Cd 111 1067.304 2.134 ug/L Cd 114 155.169 3.099 ug/L In 115 1316028.770 1.392 ug/L Sb 121 49.001 12.414 ug/L Sb 123 40.025 18.759 ug/L Ba 135 88.668 11.739 ug/L Ba 137 138.669 5.461 ug/L > Tb 159 1883074.379 2.510 ug/L Ho 165 1867707.257 1.039 ug/L Hg 201 59.334 6.811 ug/L Hg 202 145.003 9.778 ug/L TI 205 721.036 6.830 ug/L Pb 208 2009.109 4.570 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

Sample ID: Blank Report Date/Time: Tuesday, April 23, 2002 09:13:40 Page 1

NYC-WTC_000040977

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NYC-WTC_000040977Source: NYC Law Department, mirrored locally

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