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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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OCR status: ok · source: pdftotext

NYC 9/11 Public Portal Document

Element: K Seq. No^: 40^.. ^^Loc. : Date: 11/01/2001 San®)lQ ID: 26386dup

Repl San^leConc StndConc BlnkCorr Time # Mg/L Mg/L Signal 1 439.2 439.2 0.070 12:08:15 2 434.9 434.9 0.069 12:08:23 3 435.5 435.5 0.069 12:08:30 4 440.0 440.0 0.070 12:08:37 Mean: 437.4 437.4 0.070 SD : 2.583 2.583 0.000 %RSD: 0.59 0.59 0.62

Element: K Seq. No.: 41 AS Log.: Date: 11/01/2001 San^le ID: QCS

Repl SampleConc StndConc BlnkCorr Time # Mg/L Mg/L Signal 1 464.9 464.9 0.074 12:09:06 2 466.9 466.9 0.074 12:09:13 3 461.4 461.4 0.074 12:09:20 4 459.3 459.3 0.073 12:09:27 Mean: 463.1 463.1 0.074 SD : 3.443 3.443 0.001 %RSD: 0.74 0.74 0.77

Element: K Seq. No.: 42 AS Log.: Date: 11/01/2001 San^le ID: Blk

Repl San^jleConc StndConc BlnkCorr Time # Mg/L /ig/L Signal 1 -100.7 -100.7 -0.020 12:09:48 2 -103.3 -103.3 -0.020 12:09:55 3 -103.9 -103.9 -0.020 12:10:02 4 -102.3 -102.3 -0.020 12:10:10 Mean: -102.6 -102.6 -0.020 SD : 1.419 1.419 0.000 %RSD: 1.38 1.38 1.18

Element: K Seg. No.: 43 AS Log.: Date: 11/01/2001 San^ile ID: 26386spk

Repl SampleConc StndConc BlnkCorr Time # /ig/L /ig/l* Signal 1 1890 377.9 0.060 12:10:31 2 1867 373.5 0.059 12:10:38 3 1915 383.1 0.061 12:10:45 4 1879 375.9 0.059 12:10:52 Mean: 1888 377.6 0.060 SD : 20.37 4.074 0.001 %RSD: 1.08 1.08 1.13

"A Page 13

NYC-WTC_000065833

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NYC-WTC_000065833Source: NYC Law Department, mirrored locally

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