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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 10:08:44 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NYC.mth Dataset File: d:\elandata\Dataset\new york city\STD CHECK 0.4 PPB Hg.663 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 10.000 26.458 0.000 0.00132 568.78 ug/L > Se-1 45 492026.730 1.614 492026.730 ug/L Cr 52 7539.201 1.521 -0.000 -0.02304 36.11 ug/L Cr 53 594.692 2.962 -0.000 -0.16513 5.64 ug/L Mn 55 1477.468 3.118 0.001 0.03242 6.94 ug/L Ni 60 840.381 6.024 0.001 0.27970 9.01 ug/L Cu 63 1494.138 1.885 0.002 0.20261 2.27 ug/L Cu 65 719.036 4.509 0.001 0.18480 7.63 ug/L Zn 66 8102.691 2.163 0.078 4.68494 2.42 ug/L Zn 67 1238.763 0.573 0.011 3.73520 1.44 ug/L Zn 68 5913.982 0.296 0.057 4.54311 1.06 ug/L > Ge 72 93745.487 0.681 93745.487 ug/L As 75 45.637 72.845 -0.000 -0.00433 419.97 ug/L Se 77 116.684 2.364 0.000 0.01528 81.77 ug/L Se 82 100.335 1.522 -0.000 -0.04189 21.40 ug/L Ag 107 309.342 6.730 -0.000 -0.03403 6.59 ug/L Cd 111 1041.304 2.428 -0.000 -0.01272 69.07 ug/L Cd 114 94.028 15.223 -0.000 -0.01001 22.23 ug/L > In 115 1325125.360 0.579 1325125.360 ug/L Sb 121 239.672 6.693 0.000 0.02113 9.01 ug/L Sb 123 205.860 3.362 0.000 0.02372 4.89 ug/L Ba 135 149.336 15.421 0.000 0.02341 38.18 ug/L Ba 137 266.340 3.608 0.000 0.02784 9.22 ug/L > Tb 159 1836958.121 1.416 1836958.121 ug/L Ho 165 1819456.819 0.574 -0.001 ug/L Hg 201 537.355 3.923 0.000 0.41417 5.40 ug/L Hg 202 1204.425 0.880 0.001 0.39372 2.31 ug/L TI 205 833.714 10.668 0.000 0.00533 76.24 ug/L Pb 208 5746.105 0.717 0.002 0.11462 2.51 ug/L

QC Calculated Values Analyte Mass QC Std % Recovery Int Std % Recovery Spike % Recovery Dilution % Diff Dup. Rei. % Diff ' Be 9 > Sc-1 45 105.958 Cr 52

Sample ID: STD CHECK 0.4 PPB Hg Report Date/Time: Tuesday, April 23, 2002 10:11:10 Page 1

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