Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
The small volume particle microsampler (SVPM): a new approach to particle size distribution and composition
Autore:
Archambault, MC; Grant, J; Hatcher, A;
Indirizzi:
Dalhousie Univ, Dept Oceanog, Halifax, NS B3H 4J1, Canada Dalhousie Univ Halifax NS Canada B3H 4J1 nog, Halifax, NS B3H 4J1, Canada
Titolo Testata:
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
fascicolo: 10, volume: 48, anno: 2001,
pagine: 2331 - 2346
SICI:
0967-0637(200110)48:10<2331:TSVPM(>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
IN-SITU CHARACTERISTICS; IMAGE-ANALYSIS; MARINE SNOW; ELECTRON-MICROSCOPY; SUSPENDED MATTER; CAMERA; SYSTEM; OCEAN; BIOENERGETICS; VALIDATION;
Keywords:
small volume particle microsampler (SVPM); image analysis; aggregates; flocculation; particle size distribution; suspended particulate matter (SPM); Coulter Multisizer;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Physical, Chemical & Earth Sciences
Citazioni:
33
Recensione:
Indirizzi per estratti:
Indirizzo: Archambault, MC Dalhousie Univ, Dept Oceanog, Halifax, NS B3H 4J1, Canada Dalhousie Univ Halifax NS Canada B3H 4J1 B3H 4J1, Canada
Citazione:
M.C. Archambault et al., "The small volume particle microsampler (SVPM): a new approach to particle size distribution and composition", DEEP-SEA I, 48(10), 2001, pp. 2331-2346

Abstract

The characterization of trophically and geochemically important suspended particulate matter (SPM) has traditionally relied on bottle sampling and subsequent analysis with Coulter Multisizers and other instruments, which arenot sufficient in preserving the in situ size, shape and composition of aggregated particles. The small volume particle microsampler (SVPM) is a sampling device that captures individual particles on filters with minimal disturbance for microscope image analysis of size distribution and composition. Sand grains, microalga (Dunaliella tertiolecta) and laboratory cultivated flocs were used to test the SVPM's ability to determine particle size. For statistical analysis of the SVPM's capabilities, sand grain and algal size distribution, calculated as equivalent spherical diameter (ESD), were compared to Multisizer data while video images provided a comparison for the flocs. Non-aggregated sand particles sampled by the SVPM showed a size distribution that was similar to that of the Multisizer. Aggregated D. tertiolectaflocs were broken up by the Multisizer, and SVPM data indicated a significantly greater mean ESD. The SVPM showed significantly smaller mean ESDs than the video images because of the higher resolution of the sampler for small particles. In terms of particle concentration, the microsampler measured values similar to those of the Multisizer and video camera. The most important feature of the SVPM is its ability to capture aggregates for the analysis of composition, by histological stains or other means. The SVPM is an alternative method of sampling that is more effective in preserving aggregates for laboratory analyses and is less complicated and expensive than in situ optical sampling techniques, especially in documenting the lower end of the particle size spectrum. (C) 2001 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/09/20 alle ore 15:10:02