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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: LFB 50 PPB AND 4 PPB Sample Date/Time: Tuesday, April 23, 2002 09:41:45 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NYC.mth Dataset File: d:\elandata\Dataset\new york cityLFB 50 PPB AND 4 PPB.660 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 17759.849 2.493 0.038 50.74252 1.53 ug/L > Se-1 45 471642.617 1.024 471642.617 ug/L Cr 52 430664.513 1.646 0.897 49.19796 1.28 ug/L Cr 53 50868.773 1.028 0.106 49.04250 0.07 ug/L Mn 55 664396.799 1.271 1.407 49.69177 0.96 ug/L Ni 60 104080.987 2.281 0.220 48.91368 1.54 ug/L Cu 63 235084.577 0.907 0.497 48.57714 0.38 ug/L Cu 65 116654.089 2.266 0.247 48.27228 1.91 ug/L Zn 66 74982.374 0.167 0.818 49.19171 2.16 ug/L Zn 67 13474.450 2.186 0.147 48.24100 2.07 ug/L Zn 68 56419.773 0.949 0.616 49.47303 1.57 ug/L > Ge 72 90703.974 2.275 90703.974 ug/L As 75 88241.909 1.842 0.972 49.56445 0.58 ug/L Se 77 8128.561 0.215 0.088 . 49.68508 2.53 ug/L Se 82 9890.477 1.500 0.108 49.94209 2.33 ug/L Ag 107 492528.180 0.438 0.385 50.73521 1.39 ug/L Cd 111 124861.012 0.721 0.097 48.89546 1.22 ug/L Cd 114 294874.721 1.618 0.231 49.10930 1.19 ug/L in 115 1278378.625 1.554 1278378.625 ug/L Sb 121 423733.583 1.109 0.331 48.74671 0.70 ug/L Sb 123 326950.324 1.872 0.256 48.53537 0.32 ug/L Ba 135 130593.710 1.233 0.073 50.08976 0.66 ug/L Ba 137 226713.743 2.745 0.127 49.65389 2.20 ug/L > Tb 159 1779145.990 0.577 1779145.990 ug/L Ho 165 1758600.543 0.199 -0.003 ug/L Hg 201 4501.159 2.463 0.002 3.96302 2.54 ug/L Hg 202 10262.559 0.525 0.006 3.87182 0.59 ug/L Tl 205 1164751.535 1.385 0.654 48.77976 0.98 ug/L Pb 208 1570877.762 0.767 0.882 49.02881 0.36 ug/L

QC Calculated Values Analyte Mass QC Std % Recovery Int Std % Recovery Spike % Recovery Dilution % Diff Dup. Rei. % Diff ' Be 9 > Se-1 45 101.569 Cr 52

Sample ID: LFB 50PPBAND4 PPB Report Date/Time: Tuesday, April 23, 2002 09:44:15 Page 1

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