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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

WESTCHESTER COUNTY DEPT OF LABS AND RESEARCH Method 200.8 - Summary Report Sample ID: STD CHECK 0.4 PPB Hg Sample Date/Time: Tuesday, April 23,2002 09:55:20 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NYC.mth Dataset File: d:\elandata\Dataset\new york cit\STD CHECK 0.4 PPB Hg.662 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 6.333 39.736 -0.000 -0.00812 89.20 ug/L > Se-1 45 474322.135 2.026 474322.135 ug/L Cr 52 7331.696 1.332 -0.000 -0.01553 104.48 ug/L Cr 53 618.694 2.964 -0.000 -0.12091 9.98 ug/L Mn 55 1328.777 2.325 0.001 0.02537 16.15 ug/L Ni 60 1211.093 4.069 0.002 0.46774 7.12 ug/L Cu 63 2047.585 3.281 0.003 0.32761 3.66 ug/L Cu 65 1048.404 0.525 0.002 0.33132 2.49 ug/L Zn 66 5786.899 0.182 0.056 3.37182 2.05 ug/L Zn 67 890.052 2.762 0.008 2.65625 3.82 ug/L Zn 68 4230.026 1.427 0.041 3.26684 2.04 ug/L Ge 72 89618.555 1.838 89618.555 ug/L As 75 19.445 124.108 -0.000 -0.01823 73.89 ug/L Se 77 110.166 3.107 0.000 0.00658 163.11 ug/L Se 82 102.335 8.311 -0.000 -0.00859 540.77 ug/L Ag 107 1001.065 5.022 0.000 0.03642 15.74 ug/L Cd 111 961.117 6.714 -0.000 -0.03743 58.59 ug/L Cd 114 240.155 9.149 0.000 0.01412 25.40 ug/L In 115 1304022.334 1.275 1304022.334 ug/L Sb 121 69.334 18.377 0.000 0.00236 65.34 ug/L Sb 123 55.026 6.570 0.000 0.00223 19.06 ug/L Ba 135 180.337 8.774 0.000 0.03651 14.49 ug/L Ba 137 300.341 6.161 0.000 0.03660 9.51 ug/L Tb 159 1792547.063 1.145 1792547.063 ug/L Ho 165 1786577.668 0.788 0.005 ug/L 0.46020 e Hg 201 576.357 4.322 0.000 5.86 ug/L Hg 202 1270.102 4.509 0.001 0.42954 4.27 ug/L TI 205 784.042 10.275 0,000 0.00409 90.80 ug/L Pb 208 5992.492 0.427 0.002 0.12655 1.20 ug/L

QC Calculated Values Analyte Mass QC Std % Recovery Int Std % Recovery Spike % Recovery Dilution % Diff Dup. Rei. % Diff ' Be 9 > Sc-1 45 102.146 Cr 52

Sample ID: STD CHECK 0.4 PPB Hg Report Date/Time: Tuesday, April 23, 2002 09:58:28 Page 1

NYC-WTC_000041004

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