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Titolo:
AN INTERCOMPARISON OF SAMPLING TECHNIQUES FOR MEASUREMENTS OF RADIOCESIUM IN UPLAND PASTURE AND SOIL
Autore:
NIELSEN SP; AARKROG A; COLGAN PA; MCGEE E; SYNNOTT HJ; JOHANSSON KJ; HORRILL AD; KENNEDY VH; BARBAYIANNIS N;
Indirizzi:
RISO NATL LAB DK-4000 ROSKILDE DENMARK RADIAT PROTECT INST IRELAND DUBLIN IRELAND SWEDISH UNIV AGR SCI S-75007 UPPSALA SWEDEN INST TERR ECOL GRANGE SANDS LA11 6JU CUMBRIA ENGLAND ARISTOTELIAN UNIV SALONIKA SALONIKA GREECE
Titolo Testata:
Journal of radioanalytical and nuclear chemistry
fascicolo: 2, volume: 171, anno: 1993,
pagine: 303 - 317
SICI:
0236-5731(1993)171:2<303:AIOSTF>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
1
Recensione:
Indirizzi per estratti:
Citazione:
S.P. Nielsen et al., "AN INTERCOMPARISON OF SAMPLING TECHNIQUES FOR MEASUREMENTS OF RADIOCESIUM IN UPLAND PASTURE AND SOIL", Journal of radioanalytical and nuclear chemistry, 171(2), 1993, pp. 303-317

Abstract

An intercomparison of sampling procedures used by five laboratories for the determination of radiocaesium in vegetation and peaty soil was carried out at two locations in Cumbria. The multiple sampling has given information on the homogeneity of the parameters studied at each location. The parameters comprise soil bulk densities, total deposition of Cs-137, deposition of Cs-137 in three soil layers, biomass densities, concentrations of Cs-137 in pasture, and activity ratios (Cs-134/Cs-137) in soil and vegetation. The determination of total deposition OfCs-137 gave no indication of differences between the laboratories. The results from the soil profiles do indicate significant differences between laboratories. One laboratory using a coring technique observed difficulties during sampling due to compression of the soil. The coring technique should thus be avoided or applied with extreme care for the sampling of depth profiles in peaty soil. The results from the sampling of pasture show no indication of differences between the laboratories. For the parameters studied the observed variabilities across soildepths and locations range from 10% to 81% in terms of relative standard deviations. A comparison across all results at the two locations indicate a 50% higher field variability at one of the sites relative tothe other.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 18:48:46