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ICPMS daily performance check report, April 15, 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_000040648–000040698

Folder label: “ICPMS 4/15/02

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NYC 9/11 Public Portal Document

WESTCHESTER COUNTY DEPT OF LABS AND RESEARCH Method 200.8 - Summary Report Sample ID: QCS 50 PPB Sample Date/Time: Monday, April 15,2002 09:43:51 Sample Type: Sample Sample Description: Number of Replicates: 3 Method File: d:\elandata\Method\NYC.mth Dataset File: d:\elandata\Dataset\new york cityQCS 50 PPB.494 Aliquot Volume (mL): Diluted To Volume (mL):

Concentration Results Analyte Mass Meas. Intens. Mean Meas. Intens. RSD Net Intens. Mean Gone. Mean Cone. RSD Sample Unit Be 9 21899.584 3.324 0.040 53.91689 3.82 ug/L Se-1 45 542386.954 0.788 542386.954 ug/L Cr 52 511896.200 3.653 0.928 53.06082 4.28 ug/L Cr 53 59641.727 3.167 0.108 50.49545 3.50 ug/L Mn 55 841745.736 0.614 1.548 54.78889 1.01 ug/L Ni 60 126767.627 2.289 0.234 52.92357 2.70 ug/L Cu 63 287427.960 0.312 0.529 50.24927 0.81 ug/L Cu 65 144889.702 3.215 0.267 52.42963 3.84 ug/L Zn 66 93216.430 0.959 0.885 49.65739 1.59 ug/L Zn 67 17374.098 2.035 0.165 53.16252 3.51 ug/L Zn 68 67480.868 0.421 0.640 50.08620 1.88 ug/L > Ge 72 104598.101 1.544 104598.101 ug/L As 75 105422.302 2.705 1.008 50.53600 4.26 ug/L Se 77 12498.035 4.595 0.120 42.40079 on 5.48 ug/L Se 82 11972.333 1.506 0.113 50.20170 2.94 ug/L Ag 107 614802.181 2.610 0.412 50.47390 2.65 ug/L Cd 111 155988.852 2.638 0.104 52.36686 2.78 ug/L Cd 114 348842.653 0.657 0.234 49.13800 1.03 ug/L > In 115 1490842.316 0.381 1490842.316 ug/L Sb 121 504711.276 0.944 0.339 50.72710 1.32 ug/L Sb 123 392095.703 1.827 0.263 52.77536 1.92 ug/L Ba 135 156257.450 1.117 0.078 50.19633 1.93 ug/L Ba 137 267544.808 1.181 0.133 49.53253 1.96 ug/L > Tb 159 2004245.515 0.819 2004245.515 ug/L Ho 165 1800817.472 8.378 0.042 ug/L TI 205 1350751.182 1.247 0.673 47.90322 0.58 ug/L Pb 208 1885008.681 0.859 0.940 49.50258 1.53 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 92.222 Cr 52 Cr 53 Mn 55

Sample ID: QCS 50 PPB Report Date/Time: Monday, April 15,2002 09:46:15 Page 1

NYC-WTC_000040661

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