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Titolo:
Soil solution extraction techniques for microbial ecotoxicity testing: a comparative evaluation
Autore:
Tiensing, T; Preston, S; Strachan, N; Paton, GI;
Indirizzi:
Univ Aberdeen, Dept Plant & Soil Sci, Aberdeen AB24 3UU, Scotland Univ Aberdeen Aberdeen Scotland AB24 3UU ci, Aberdeen AB24 3UU, Scotland
Titolo Testata:
JOURNAL OF ENVIRONMENTAL MONITORING
fascicolo: 1, volume: 3, anno: 2001,
pagine: 91 - 96
SICI:
1464-0325(200102)3:1<91:SSETFM>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
CHEMICAL SPECIATION; IMMISCIBLE DISPLACEMENT; WATER; CONTAMINATION; SAMPLERS; TOXICITY; CADMIUM; ZINC; CHEMISTRY; BACTERIAL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
41
Recensione:
Indirizzi per estratti:
Indirizzo: Paton, GI Univ Aberdeen, Dept Plant & Soil Sci, Cruickshank Bldg,St MacharDr, Aberdeen AB24 3UU, Scotland Univ Aberdeen Cruickshank Bldg,St Machar Dr Aberdeen Scotland AB24 3UU
Citazione:
T. Tiensing et al., "Soil solution extraction techniques for microbial ecotoxicity testing: a comparative evaluation", J ENVIR MON, 3(1), 2001, pp. 91-96

Abstract

The suitability of two different techniques (centrifugation and Rhizon sampler) for obtaining the interstitial pore water of soil (soil solution), integral to the ecotoxicity assessment of metal contaminated soil, were investigated by combining chemical analyses and a luminescence-based microbial biosensor. Two different techniques, centrifugation and Rhizon sampler, wereused to extract the soil solution from Insch (a loamy sand) and Boyndie (asandy loam) soils, which had been amended with different concentrations ofZn and Cd. The concentrations of dissolved organic carbon (DOC), major anions (F-, C-, NO3-, SO42-) and major cations (K+, Mg2+, Ca2+) in the soil solutions varied depending on the extraction technique used. Overall, the concentrations of Zn and Cd were significantly higher in the soil solution extracted using the centrifugation technique compared with that extracted using the Rhizon sampler technique. Furthermore, the differences observed between the two extraction techniques depended on the type of soil from which the solution was being extracted. The luminescence-based biosensor Escherichia coli HB101 pUCD607 was shown to respond to the free metal concentrations in the soil solutions and showed that different toxicities were associated with each soil, depending on the technique used to extract the soil solution. This study highlights the need to characterise the type of extraction technique used to obtain the soil solution for ecotoxicity testing in order that a representative ecotoxicity assessment can be carried out.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 03:00:48