Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
MICROTECHNIQUES FOR THE DETERMINATION OF NANOMOLAR CONCENTRATIONS OF TRACE-ELEMENTS IN LESS-THAN-OR-EQUAL-TO-10ML OF SEDIMENT POREWATER
Autore:
RIVERADUARTE I; FLEGAL AR;
Indirizzi:
UNIV CALIF SANTA CRUZ,DEPT EARTH SCI,WIGS SANTA CRUZ CA 95064
Titolo Testata:
Analytica chimica acta
fascicolo: 1, volume: 328, anno: 1996,
pagine: 13 - 17
SICI:
0003-2670(1996)328:1<13:MFTDON>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
SAN-FRANCISCO BAY; SOUTHERN CALIFORNIA BIGHT; ATLANTIC-OCEAN; COPPER; WATERS; LEAD; CADMIUM; SILVER; NICKEL; METALS;
Keywords:
ATOMIC ABSORPTION SPECTROMETRY; TRACE ELEMENTS; PRECONCENTRATION; POREWATER;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
18
Recensione:
Indirizzi per estratti:
Citazione:
I. Riveraduarte e A.R. Flegal, "MICROTECHNIQUES FOR THE DETERMINATION OF NANOMOLAR CONCENTRATIONS OF TRACE-ELEMENTS IN LESS-THAN-OR-EQUAL-TO-10ML OF SEDIMENT POREWATER", Analytica chimica acta, 328(1), 1996, pp. 13-17

Abstract

Microtechniques were incorporated with trace metal clean techniques to determine nanomolar concentrations of Ag, Cd, Co, Cu, Fe, Ni, Pb andZn in small (2-10 ml) aliquots of sediment porewater. This involved aliquid-liquid preconcentration with organic chelators (APDC and DDDC)coupled with analyses by graphite furnace atomic absorption spectrometry. The preconcentration was quantitative with recovery efficiencies between 96% and 100% and calculated extraction efficiencies between 90% and 104%. Procedural blanks were 0.95% of the Ag, 0.33% of the Cd, 0.24% of the Cu, 0.12% of the Ni, and less than or equal to 0.05% of the Co, Fe, Pb, and Zn concentrations in 10 ml aliquots of an internal reference porewater material. Therefore, these techniques are suitable for measuring ambient concentrations of trace metals in sediment porewater.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/09/20 alle ore 21:13:39