Selenium lab results, WTC samples, Oct 1 2001

NYC 9/11 Public Portal Document

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Element: Se Seq. No.: 96 AS hoc.: 38 Date: 10/01/2001 .S^rap]»e ID: S15 gL dispensed: 5 from 36, 5 from 37, 20 from 10, 15 from 38

Repl SampleConc StndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # IJLg/'b Signal Area Height Area Height Stored 1 0.047 0.051 0.071 0.028 0.025 16:40:01 No Addition number 3 applied. [15.00] Correlation Coefficient: 0.9971 Slope: 0.0032

Element: Se Seq. No.: 97 AS Loc.: 38 Date: 10/01/2001 Sample ID: S20^ liL dispensed: 5 om 37, 20 from 10, 20 from 38

Repl San5)leConc ^tndConc BlnkCorr Peak Peak Bkgnd Bkgnd Time Peak # /ig/L Signal Area Height Area Height Stored 1 \ 0.058 0.062 0.088 0.031 0.032 16:42:42 No The calibration curve maly not be linear. Addition number 4 applie [20.00] Correlation Coefficient: \o.9962 Slope: 0.0030

Se 0.06 “T

0.04“ 8c

S 0.02 -

0 I I "1 0 10 20 30

Concentration

Calibration data for Se Entered Calculated Mean Signal Concentration Concentration Standard Standard ID (Pk Area) (gg/L) Deviation %RSD Calib Blank 0.000 0.7587 S5 0.013 5.00 4.974 SIO 0.032 10.00 11.40 S15 0.047 15.00 16.38 S20 0.058 20.00 20.05 Correlation Coefficient: 0.99622 Slope: 0.00302 Intercept: 0.000

[Se] Sample Concentration -0.8037 /zg/L [Se] Sample Concentration -16.07 ;zg/L

Paae 26 NYC-WTC_000065316