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040 |aCaOODSP|beng|erda|cCaOODSP
041 |aeng|bfre
043 |an-cn-on
0861 |aEn13-5/87-123E-PDF
1001 |aLee, H. B., |eauthor.
24510|aPreservation of organics : |bpart II : stability of chlorophenols in preserved natural water samples / |cby H.B. Lee, Y.D. Stokker, N. Arafat and A.S.Y. Chau.
24610|aStability of chlorophenols in preserved natural water samples
264 1|aBurlington, Ontario, Canada : |bNational Water Research Institute, Research and Applications Branch, Canada Centre for Inland Waters, |cJune 1987.
300 |a1 online resource (iv, 8 pages, 14 unnumbered pages).
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aNWRI contribution ; |v87-123
500 |aTitle from cover.
500 |aDigitized edition from print [produced by Environment and Climate Change Canada].
504 |aIncludes bibliographical references.
5203 |a"This study monitored the stability of 20 chlorophenols (CP) including the monochlorophenols in spiked water samples from five regions. Before the full-scale study was implemented, a pilot study was designed to evaluate the efficiency of three chemicals, namely, chloroform, copper sulfate and sulfuric acid, for the preservation of CP in water. Using Lake Ontario water as a typical sample, results indicated that both copper sulfate and sulfuric acid were effective preservatives. However, sulfuric acid was later chosen in the full-scale study since it was also used to preserve water samples for trace metal and acid herbicide analyses. The stability of CP in the spiked and sulfuric acid-preserved water samples was monitored by repetitive analysis of the samples immediately after spiking, as well as after 3, 6, 10, and 15 weeks of storage at 4°C in the dark. Under such conditions, the results in the full-scale study indicated no evidence of degradation for any CP in all samples over the 15-week study period"--Abstract, page ii.
546 |aIncludes a management perspective and abstract in English and French.
69207|2gccst|aWater management
69207|2gccst|aChemicals
69207|2gccst|aSamples
7001 |aStokker, Yvonne D., |eauthor.
7001 |aArafat, Nabil, |eauthor.
7001 |aChau, A. S. Y. |q(Alfred Shun-Yuen), |d1941- |eauthor.
7101 |aCanada. |bEnvironment Canada.
7102 |aNational Water Research Institute (Canada). |bResearch and Applications Branch.
7102 |aCanada Centre for Inland Waters.
830#0|aNWRI contribution ;|v87-123.|w(CaOODSP)9.844121
85640|qPDF|s1.57 MB|uhttps://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-87-123-eng.pdf