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ICPMS daily performance check report, April 22, 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_000040871–000040923

Folder label: “ICPMS 4/22/01

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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 AND 4 PPB Sample Date/Time: Monday, April 22, 2002 12:19:38 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NEWQ200.8.mth Dataset File: d:\elandata\Dataset\NEWQ\NEWQ\LFB 50 AND 4 PPB.498 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 16495.122 2.475 0.035 51.10381 2.03 ug/L > Se-1 45 472987.614 2.531 472987.614 ug/L Cr 52 430996.167 2.243 0.895 48.21791 0.47 ug/L Cr 53 51348.808 1.431 0.107 47.83874 1.36 ug/L Mn 55 658519.441 1.760 1.389 48.02282 2.49 ug/L Ni 60 106953.022 1.986 0.226 46.84545 0.55 ug/L Cu 63 244949.986 0.602 0.517 47.15929 2.36 ug/L Cu 65 120193.263 1.137 0.254 46.72100 1.49 ug/L Zn 66 76153.084 1.165 0.836 50.03236 1.04 ug/L Zn 67 13852.352 1.463 0.152 49.69988 1.36 ug/L Zn 68 56823.280 1.004 0.624 49.74761 0.94 ug/L > Ge 72 90293.107 0.780 90293.107 ug/L As 75 90337.768 2.155 1.000 49.90331 1.72 ug/L Se 77 8371.676 1.728 0.091 50.97095 1.16 ug/L Se 82 10187.807 0.767 0.112 51.37867 0.02 ug/L Ag 107 519119.543 0.525 0.391 50.57683 0.34 ug/L > in 115 1326723.103 0.193 1326723.103 ug/L Sb 121 433190.497 1.123 0.326 49.30817 0.93 ug/L Sb 123 335829.451 0.949 0.253 49.29159 0.82 ug/L Ba 135 137770.940 1.460 0.075 50.68302 0.21 ug/L Ba 137 239025.261 1.851 0.130 50.57700 0.77 ug/L Ho 165 1836895.330 1.852 0.006 ug/L Tb 159 1843058.104 1.532 1843058.104 ug/L Hg 201 4909.374 1.265 0.003 3.99431 1.14 ug/L Hg 202 11015.448 2.160 0.006 4.01705 1.63 ug/L TI 205 1229322.172 1.513 0.666 48.63335 0.07 ug/L Pb 208 1661971.545 0.954 0.901 48.79230 0.62 ug/L

QC Calculated Values Analyte Mass QC Std % Recovery Int Std % Recovery Spike % Recovery Dilution % Diff Dup. Rei. % Diff ’ Be 9 > Se-1 45 111.453 Cr 52 Cr 53 Mn 55

Sample ID: LFB 50 AND 4 PPB Report Date/Time: Monday, April 22, 2002 12:21:50 Page 1

NYC-WTC_000040886

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