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Quality Control on Standard Samples of <TEX>$N-NO_3$</TEX> and <TEX>$F^-$</TEX> of Drinking Water Quality Pollutant
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2000, v.13 no.2, pp.229-233
Park,
S. K., Song,
K. B., &
Kim,
P.
C.
(2000). Quality Control on Standard Samples of <TEX>$N-NO_3$</TEX> and <TEX>$F^-$</TEX> of Drinking Water Quality Pollutant. Analytical Science and Technology, 13(2), 229-233.
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Abstract
The study was carried out to confirm the reliability of standard samples, low concentration <TEX>$0.74mgN(NO_3)/l$</TEX>, <TEX>$0.58mgF^-/l$</TEX>, high concentration <TEX>$2.14mgN(NO_3)/l$</TEX>, <TEX>$1.25mgF^-/l$</TEX>, on the base of quality control chart. The analytical results had the precise reliability with standard deviation of 0.010, 0.017, 0.056 and 0.019, respectively. When three persons A, B and C, who had different analytical experiences, analyzed the standard samples six times repeatedly, C person, who had more academic career and analytical experience, produced far better reliability for analytical results. Therefore, these standard samples were very suitable for external quality control test, because all persons' average values for analytical results were close to the values of prepared standard samples.
- keywords
- standard sample, reliability, quality control chart
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