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| 02188nam 2200349za 4500 |
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| 001 | 9.848592 |
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| 003 | CaOODSP |
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| 005 | 20221107153721 |
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| 007 | cr ||||||||||| |
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| 008 | 171212s1985 onca|||fob|||f000 0 eng d |
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| 040 | |aCaOODSP|beng |
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| 043 | |an-cn--- |
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| 086 | 1 |aEn13-5/85-117E-PDF |
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| 100 | 1 |aCheam, V. |
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| 245 | 10|aEvaluation of SO4 data compatibility and approaches for salvaging historical data|h[electronic resource] / |cby V. Cheam, A.S.Y. Chau, and S. Todd. |
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| 260 | |a[Burlington, Ont.] . : |bAnalytical Methods Division, National Water Research Institute, Canada Centre for Inland Waters, |c[1985].. |
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| 300 | |aii, 19, [17] p. : |bill. |
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| 490 | 1 |aNWRI contribution ; |v85-117 |
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| 500 | |a"Presented at a workshop on statistical aspects of water quality monitoring, October 7-10, 1985, followed by publication of method validation". |
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| 500 | |aDigitized edition from print [produced by Environment and Climate Change Canada]. |
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| 504 | |aIncludes bibliographical references: p. 11-13. |
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| 520 | 3 |a"The compatibility and reliability of colorimetric and chromatographic SO4 data were evaluated. The multiple standard addition technique was applied to numerous natural and humic-acid fortified waters. A total of more than 20 different waters was used, in which the colour ranged from 50 to 440 H.U. and the organic carbon from 0.7 to 20 ppm. For the first time, it was demonstrated that Ion Chromatography (IC) data on organic-contaminated coloured waters are reliable.It was also confirmed that the Methyl Thymol Blue (HTB) colorimetric data were biased high. An approach for salvaging historical colorimetric data was found and briefly discussed"--Abstract. |
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| 692 | 07|2gccst|aWater quality |
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| 692 | 07|2gccst|aTesting |
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| 700 | 1 |aChau, A. S. Y. |q(Alfred Shun-Yuen), |d1941- |
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| 700 | 1 |aTodd, S. |
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| 710 | 1 |aCanada. |bEnvironment Canada. |
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| 710 | 2 |aNational Water Research Institute (Canada) |
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| 830 | #0|aNWRI contribution ;|vno. 85-117|w(CaOODSP)9.844121 |
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| 856 | 40|qPDF|s1.60 MB|uhttps://publications.gc.ca/collections/collection_2017/eccc/En13-5-85-117-eng.pdf |
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