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ICPMS daily performance check report, May 24, 2002

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Daily instrument calibration and performance verification log for ICPMS equipment conducted on May 24, 2002.

NYC-WTC_000054375–000054546

Folder label: “ICPMS 5/24/02

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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: Friday, May 24, 2002 09:33:41 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: c:\winnt\profiles\lrd1\elandata\Method\_NEWN.mth Dataset File: c:\winnt\profiles\lrd1\elandata\Dataset\new york city\STD CHECK 0.4 PPB Hg.355 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 3.667 41.660 -0.000 -0.00802 46.54 ug/L Li 6 57766.223 1.577 57766.223 ug/L > Se-1 45 443503.400 1.462 443503.400 ug/L Cr 52 7779.072 1.715 0.001 0.05346 42.60 ug/L Cr 53 600.693 7.550 0.000 0.00847 578.92 ug/L Mn 55 1746.852 2.237 0.002 0.06654 3.34 ug/L Co 59 191.337 2.176 0.000 0.00084 19.12 ug/L Ni 60 319.009 2.194 0.001 0.12818 4.02 ug/L Cu 63 1192.424 3.582 0.002 0.20321 5.90 ug/L Cu 65 567.357 2.406 0.001 0.19525 3.32 ug/L Zn 66 1565.484 5.806 0.008 0.48495 12.31 ug/L Zn 67 278.340 8.977 0.001 0.38586 24.71 ug/L Zn 68 1187.423 1.083 0.006 0.47048 0.52 ug/L > Ge 72 91847.253 0.975 91847.253 ug/L As 75 12713.711 1.659 0.005 0.22651 47.87 ug/L Se 77 1591.804 2.058 0.000 0.22890 76.49 ug/L Se 82 -163.969 51.705 0.002 0.71866 56.30 ug/L As-1 75 98.668 14.559 -11.000 -0.00586 130.58 ug/L Kr 83 4857.012 0.876 -299.835 ug/L Ag 107 706.702 13.599 -0.000 -0.04133 25.75 ug/L Cd 111 32,000 10.825 0.000 0.00300 43.05 ug/L Cd 114 64.694 7.044 0.000 0.00252 33.05 ug/L In 115 1216894.663 1.033 1216894.663 ug/L Sb 121 206.671 9.548 0.000 0.02047 11.25 ug/L Sb 123 161.494 2.212 0.000 0.02102 1.45 ug/L Ba 135 171.003 1.013 0.000 0.05424 2.72 ug/L Ba 137 295.341 11.257 0.000 0.05550 16.05 ug/L Ho 165 1791701.312 0.714 0.001 ug/L > Tb 159 1768589.436 0.987 1768589.436 ug/L Hg 201 529.354 7.407 0,000 0.38799 8.36 ug/L Hg 202 1160.419 0.828 0.001 0.37495 0.21 ug/L TI 205 664.364 6.997 0.000 0.00873 22.24 ug/L Pb 208 5019.924 2.113 0.002 0.08675 2.88 ug/L

Sample ID: STD CHECK 0.4 PPB Hg Report Date/Time: Friday, May 24, 2002 09:36:04 Page 1

NYC-WTC_000054400

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