00000000nam 2200000zi 4500
0019.872704
003CaOODSP
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006m     o  d f      
007cr bn|||||||||
008190509s1998    onca    ob   f000 0 eng d
040 |aCaOODSP|beng|erda|cCaOODSP
041 |aeng|bfre
043 |an-cn---
0861 |aEn13-5/98-32E-PDF
1001 |aLee, H. B., |eauthor.
24510|aOccurrence and elimination of nonylphenol ethoxylates and metabolites in municipal wastewater and effluents / |cby Hing-Biu Lee and Thomas E. Peart, Aquatic Ecosystem Protection Branch, National Water Research Institute, Environment Canada.
264 1|aBurlington, Ontario : |bNational Water Research Institute = Institut national de recherche sur les eaux, |c[1998]
300 |a1 online resource (4 unnumbered pages, 20 pages) : |billustration.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aNWRI contribution ; |vno. 98-032
500 |aDigitized edition from print [produced by Environment and Climate Change Canada].
504 |aIncludes bibliographical references.
5203 |a"A survey of the concentrations of nonylphenol ethoxylates (NPEO) and their metabolites in wastewater samples collected from a Canadian sewage treatment plant using primary and secondary treatment is presented. 24h-Hr composite raw sewage, primary effluent and final effluent samples were collected monthly over a one-year period. Levels of NPnEO (n=1 to 17) and their metabolites, nonylphenol (NP) and nonylphenoxy carboxylic acids (NPEC), in these samples were determined by HPLC and GC/MS methods. While ca. 85% of the total alkylphenolics in raw sewage are ethoxylates, the major component (nearly 80%) in the final effluent was in the form of carboxylic acids. During this study period, the median total alkylphenolic concentrations in raw sewage and final effluent were 526 and 248 nmol/L, respective1y, representing an overall elimination rate of 53%. The estimated daily discharge of the nonylphenolics to the aquatic environment varied from 15 to 44 moles, with a median value of 20 moles. These data suggested that conventional sewage treatments are ineffective in the removal of the surfactant-derived metabolites"--Abstract.
546 |aIncludes management perspective and abstract in French.
69207|2gccst|aPollutants
69207|2gccst|aWaste water
7001 |aPeart, Thomas E., |eauthor.
7101 |aCanada. |bEnvironment Canada.
7102 |aNational Water Research Institute (Canada). |bAquatic Ecosystem Protection Branch.
7102 |aNational Water Research Institute (Canada)
830#0|aNWRI contribution ;|vno. 98-032.|w(CaOODSP)9.844121
85640|qPDF|s894 KB|uhttps://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-98-32-eng.pdf