|
000
| 02912cam 2200397zi 4500 |
|---|
| 001 | 9.872704 |
|---|
| 003 | CaOODSP |
|---|
| 005 | 20221107163719 |
|---|
| 006 | m o d f |
|---|
| 007 | cr bn||||||||| |
|---|
| 008 | 190509s1998 onca ob f000 0 eng d |
|---|
| 040 | |aCaOODSP|beng|erda|cCaOODSP |
|---|
| 041 | |aeng|bfre |
|---|
| 043 | |an-cn--- |
|---|
| 086 | 1 |aEn13-5/98-32E-PDF |
|---|
| 100 | 1 |aLee, H. B., |eauthor. |
|---|
| 245 | 10|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 |
|---|
| 490 | 1 |aNWRI contribution ; |vno. 98-032 |
|---|
| 500 | |aDigitized edition from print [produced by Environment and Climate Change Canada]. |
|---|
| 504 | |aIncludes bibliographical references. |
|---|
| 520 | 3 |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. |
|---|
| 692 | 07|2gccst|aPollutants |
|---|
| 692 | 07|2gccst|aWaste water |
|---|
| 700 | 1 |aPeart, Thomas E., |eauthor. |
|---|
| 710 | 1 |aCanada. |bEnvironment Canada. |
|---|
| 710 | 2 |aNational Water Research Institute (Canada). |bAquatic Ecosystem Protection Branch. |
|---|
| 710 | 2 |aNational Water Research Institute (Canada) |
|---|
| 830 | #0|aNWRI contribution ;|vno. 98-032.|w(CaOODSP)9.844121 |
|---|
| 856 | 40|qPDF|s894 KB|uhttps://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-98-32-eng.pdf |
|---|