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ICPMS daily performance check report, April 15, 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_000040648–000040698

Folder label: “ICPMS 4/15/02

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NYC 9/11 Public Portal Document

WESTCHESTER COUNTY DEPT OF LABS AND RESEARCH Method 200.8 - Summary Report Sample ID: LFB 50 PPB Sample Date/Time: Monday, April 15, 2002 09:47:10 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NYC.mth Dataset File: d:\elandata\Dataset\new york city\LFB 50 PPB.495 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 22184.261 1.603 0.039 52.18453 0.30 ug/L > Se-1 45 567577.771 1.364 567577.771 ug/L Cr 52 517425.383 2.442 0.896 51.23033 3.81 ug/L Cr 53 61531.531 1.905 0.106 49.76483 1.04 ug/L Mn 55 769014.907 0.400 1.352 47.82275 1.76 ug/L Ni 60 130137.109 2.251 0.229 51.91010 1.01 ug/L Cu 63 295619.327 3.691 0.520 49.37502 2.43 ug/L Cu 65 148518.899 0.961 0.261 51.35713 2.18 ug/L Zn 66 94905.905 3.822 0.902 50.59628 2.41 ug/L Zn 67 15815.572 1.316 0.150 48.39006 2.53 ug/L Zn 68 70543.758 2.060 0.670 52.42190 1.91 ug/L Ge 72 104494.233 1.409 104494.233 ug/L As 75 110987.868 0.585 1.062 53.24413 1.98 ug/L Se 77 16689.770 9.058 0.160 56.62794. 7.98 ug/L Se 82 12616.211 2.565 0.120 52.96185 1.52 ug/L Ag 107 631081.594 0.913 0.435 53.29402 1.00 ug/L Cd 111 146143.806 2.029 0.100 50.45107 2.72 ug/L Cd 114 361696.966 1.525 0.249 52.40463 1.76 ug/L > in 115 1449479.528 0.686 1449479.528 ug/L Sb 121 485329.208 0.928 0.335 50.17193 1.39 ug/L Sb 123 376674.151 1.139 0.260 52.14919 1.72 ug/L Ba 135 150748.215 1.221 0.077 49.48615 1.99 ug/L Ba 137 272452.388 1.939 0.139 51.53537 0.29 ug/L > Tb 159 1961517.534 1.926 1961517.534 ug/L Ho 165 1983161.886 0.639 0.155 ug/L n 205 1379082.698 3.632 0.702 49.97425 2.70 ug/L Pb 208 1816314.166 0.831 0.925 48.74082 1.30 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 96.506 Cr 52 Cr 53 Mn 55

Sample ID: LFB 50 PPB Report Date/Time: Monday, April 15, 2002 09:50:03 Page 1

NYC-WTC_000040663

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