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| 02239cam 2200373za 4500 |
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| 001 | 9.850132 |
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| 003 | CaOODSP |
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| 005 | 20221107154104 |
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| 007 | cr ||||||||||| |
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| 008 | 180116s1986 oncab||fob 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 |aEn13-5/86-183E-PDF |
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| 100 | 1 |aJoshi, S. R. |q(Sewak Ram) |
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| 245 | 10|aDirect determination of geochronologically-useful radionuclides in sediments by low-energy photon analysis |h[electronic resource] / |cS.R. Joshi and A. Mudroch. |
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| 260 | |aBurlington, Ont. : |bEnvironmental Contaminants Division, National Water Research Institute, Canada Centre for Inland Waters, |c[1986]. |
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| 300 | |a15, [7] p. : |bill., map |
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| 490 | 1 |aNWRI contribution ; |vno. 86-183 |
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| 500 | |a"Division Control No. ECD-112". |
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| 500 | |a"This manuscript has been submitted to Nuclear Instruments and Methods and the contents are subject to change". |
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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 | 0 |a"The levels of Pb-210 and Am-241 in sediments are normally measured by using complex chemical procedures which are both time consuming and require considerable dexterity in separation chemistry. The two radionuclides, however, also emit very low energy gamma rays which can be measured on a properly calibrated hyperpure germanium detector. The present paper describes the development of such a qamma-ray spectrometric technique. The technique is applied to assign dates to two sediment cores from the Great Slave Lake, NWT. The results are compatible with the dates derived from Cs-137 measurements"--Management perspective. |
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| 546 | |aIncludes management perspective and abstract in French. |
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| 692 | 07|2gccst|aWater quality |
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| 692 | 07|2gccst|aRadioactivity |
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| 700 | 1 |aMudroch, Alena. |
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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. 86-183|w(CaOODSP)9.844121 |
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| 856 | 40|qPDF|s1.35 MB|uhttps://publications.gc.ca/collections/collection_2018/eccc/En13-5-86-183-eng.pdf |
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