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| 02250cam 2200337za 4500 |
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| 001 | 9.846158 |
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| 003 | CaOODSP |
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| 005 | 20221107153131 |
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| 007 | cr ||||||||||| |
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| 008 | 171026s1996 onca|||fo f000 0 eng d |
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| 040 | |aCaOODSP|beng |
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| 041 | |aeng|bfre |
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| 043 | |an-cn--- |
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| 086 | 1 |aEn13-5/96-157E-PDF |
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| 245 | 00|aComparison of direct sediment bioassay results with sediment extract results in preserved sediments |h[electronic resource] / |cB.J. Dutka ... [et al.]. |
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| 260 | |aBurlington, Ont. : |bNational Water Research Institute, |c1996. |
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| 300 | |a8, [2] p. : |bill. |
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| 490 | 1 |aNWRI contribution ; |v96-157 |
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| 500 | |a"January 1996". |
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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 | 3 |a"Complete and unequivocal preservation of samples, whether domestic wastewater, industrial wastes, natural waters or sediments for microbiological or bioassay testing, is a practical impossibility. Realizing the problem, the effects of freezing and thawing on sediments as they relate to bioassay results were investigated by incorporating this preservation feature into a study designed to evaluate the relative sensitivities of direct sediment bioassays and bioassays performed, on sediment extracts and the relative toxicant/genotoxicant load of inlet and outlet sediments at three Toronto area stormwater ponds. The bioassay responses to stored sediments were very bioassay specific as two bioassays supposedly measuring similar effects often produced diametrically opposite results. The superior sensitivity of the direct sediment SOS-Chromotest procedure over genotoxjcity tests performed on sediment extracts is well illustrated in this comparison study"--Abstract. |
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| 546 | |aAbstracts in English and French. |
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| 692 | 07|2gccst|aPollution |
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| 692 | 07|2gccst|aWater quality |
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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. 96-157|w(CaOODSP)9.844121 |
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| 856 | 40|qPDF|s1.28 MB|uhttps://publications.gc.ca/collections/collection_2017/eccc/En13-5-96-157-eng.pdf |
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