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← Document results/DEP Box 29/ICPMS 5/24/02
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ICPMS daily performance check report, May 24, 2002

Machine-extracted title · confidence 98%

Daily instrument calibration and performance verification log for ICPMS equipment conducted on May 24, 2002.

NYC-WTC_000054375–000054546

Folder label: “ICPMS 5/24/02”

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NYC 9/11 Public Portal Document

QC Calculated Values Analyte Mass QC Std % Recovery Int Std % Recovery Spike % Recovery Dilution % Diff Dup. Rei. % Diff Be 9 101.621 Li 6 92.797 > Sc-1 45 94.974 Cr 52 97.610 Cr 53 98.469 Mn 55 95.574 Co 59 96.900 Ni 60 95.584 Cu 63 94.641 Cu 65 92.700 Zn 66 99.395 Zn 67 98.587 Zn 68 99.447 > Ge 72 96.721 As 75 106.911 Se 77 112.771 Se 82 111.207 As-1 75 90.724 Kr 83 Ag 107 91.110 Cd 111 99.281 Cd 114 99.233 > In 115 93.885 Sb 121 103.862 Sb 123 102.644 Ba 135 96.956 Ba 137 96.881 Ho 165 > Tb 159 95.721 Hg 201 101.498 Hg 202 99.912 TI 205 94.693 Pb 208 93.554 Calibration Analyte MassCurve Type Correlation Coefficient V Be 9Linear Thru Zero 0.999993 Li 6Linear Thru Zero > Sc-1 45Linear Thru Zero Cr 52Linear Thru Zero 0.999996 Cr 53Linear Thru Zero 0.999995 Mn 55Linear Thru Zero 0.999997 Co 59Linear Thru Zero 0.999999 Ni 60Linear Thru Zero 0.999980 Cu 63Linear Thru Zero 0.999990 Cu 65Linear Thru Zero 0.999997 Zn 66Linear Thru Zero 0.999967 Zn 67Linear Thru Zero 0.999990 Zn 68Linear Thru Zero 0.999970 > Ge 72Linear Thru Zero As 75Linear Thru Zero 1.000000

Sample ID: AE11572 Report Date/Time: Friday, May 24, 2002 12:39:58 Page 2

NYC-WTC_000054506

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NYC-WTC_000054506Source: NYC Law Department, mirrored locally

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