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| 01908cam 2200373zi 4500 |
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| 001 | 9.874940 |
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| 003 | CaOODSP |
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| 005 | 20221107164329 |
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| 006 | m o d f |
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| 007 | cr |n||||||||| |
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| 008 | 190614s1990 oncd #ot f000 0 eng d |
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| 040 | |aCaOODSP|beng|erda|cCaOODSP |
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| 041 | |aeng|bfre |
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| 043 | |an-cn--- |
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| 086 | 1 |aEn13-5/90-104E-PDF |
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| 100 | 1 |aSerkerka, I., |eauthor. |
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| 245 | 10|aAnalysis for dissolved oxygen in natural water, including sample preservation / |cby I. Sekerka and J.F. Lechner. |
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| 264 | 1|aBurlington, Ontario : |bNational Water Research Institute, |c[1990] |
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| 300 | |a1 online resource (17 unnumbered pages) : |bfigures. |
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| 336 | |atext|btxt|2rdacontent |
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| 337 | |acomputer|bc|2rdamedia |
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| 338 | |aonline resource|bcr|2rdacarrier |
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| 490 | 1 |aNWRI contribution ; |vno. 90-104 |
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| 500 | |aDigitized edition from print [produced by Environment and Climate Change Canada]. |
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| 504 | |aIncludes bibliographical references. |
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| 520 | |a"A sample preservation procedure as part of the determination of dissolved oxygen (DO) in natural water by a modified Winkler method is described. The procedure involves the "in situ" treatment of the samples to the acid stage of the Winkler procedure. DO in preserved samples was stabilized for at least 70 days. Colorimetric and titrimetric methods for the quantitation of dissolved oxygen were evaluated and colorimetry was found to be a superior method"--Abstract. |
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| 546 | |aIncludes abstract in French. |
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| 692 | 07|2gccst|aWater management |
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| 700 | 1 |aLechner, Josef F., |eauthor. |
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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. 90-104. |w(CaOODSP)9.844121 |
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| 856 | 40|qPDF|s750 KB|uhttps://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-90-104-eng.pdf |
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