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Potassium lab results, WTC samples, Nov 1 2001

Machine-extracted title · confidence 90%

Laboratory report listing sample IDs and QC data for potassium analysis of World Trade Center environmental samples dated November 1, 2001.

NYC-WTC_000065821–000065850

Folder label: “K 11/1/01

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NYC 9/11 Public Portal Document BBSSBSBBSBSBSBBSSSBBSBSBSBBSBBS:

Element: K Seq. No.: 76 AS Loc.: Date: 11/01/2001 San^le ID: 26537

Repl SanpleConc StndConc BlnkCorr Time # /tg/L Signal 1 444.9 444.9 0.071 12:37:49 2 444.0 444.0 0.071 12:37:56 3 451.3 451.3 0.072 12:38:03 4 449.0 449.0 0.071 12:38:10 Mean: 447.3 447.3 0.071 SD ; 3.410 3.410 0.001 %RSD; 0.76 0.76 0.79

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Element: K Seq. No.; 77 AS Loc.: Date: 11/01/2001 Sample ID: 26538

Repl San^jleConc StndConc BlnkCorr Time # /ig/L /tg/L Signal 1 442.0 442.0 0.070 12:38:45 2 441.6 441.6 0.070 12:38:53 3 441.3 441.3 0.070 12:39:00 4 440.2 440.2 0.070 12:39:07 Mean; 441.3 441.3 0.070 SD : 0.7881 0.7881 0.000 %RSD: 0.18 0.18 0.19

Element: K Seq. No.; 78 AS Loc.: Date: 11/01/2001 Sample ID; 26624

Repl SanpleConc StndConc BlnkCorr Time # /xg/L /tg/L Signal 1 2268 2268 0.373 12:39:29 Sanple absorbance is greater than that of the highest standard. 2 2276 2276 0.374 12:39:37 Sample absorbance is greater than that of the highest standard. 3 2263 2263 0.372 12:39:44 Sanple absorbance is greater than that of the highest standard. 4 2278 2278 0.374 12:39:51 Sample absorbance is greater than that of the highest standard. Mean: 2271 2271 0.373 SD : 7.030 7.030 0.001 %RSD : 0.31 0.31 0.31 Sample absorbance is greater than that of the highest standard.

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Element: K Seq. No.: 79 AS Loc.; Date: 11/01/2001 Sample ID: 26625

Repl SanpleConc StndConc BlnkCorr Time # Mg/L Mg/L Signal 1 424.8 424.8 0.067 12:41:47 2 430.0 430.0 0.068 12:41:54 3 429.5 429.5 0.068 12:42:01 4 428.0 428.0 0.068 12:42:08 Mean: 428.1 428.1 0.068 SD : 2.332 2.332 0.000 %RSD: 0.54 0.54 0.57

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NYC-WTC_000065842

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NYC-WTC_000065842Source: NYC Law Department, mirrored locally

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