Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Comparison and evaluation of laboratory performance on a method for the determination of perchlorate in fertilizers
Autore:
Urbansky, ET; Collette, TW;
Indirizzi:
US EPA, Off Res & Dev, Natl Risk Management Res Lab, Water Supply & Water Resources Div, Cincinnati, OH 45268 USA US EPA Cincinnati OH USA 45268 er Resources Div, Cincinnati, OH 45268 USA US EPA, Off Res & Dev, Natl Exposure Res Lab, Ecosyst Res Div, Athens, GA 30605 USA US EPA Athens GA USA 30605 Res Lab, Ecosyst Res Div, Athens, GA 30605 USA
Titolo Testata:
JOURNAL OF ENVIRONMENTAL MONITORING
fascicolo: 5, volume: 3, anno: 2001,
pagine: 454 - 462
SICI:
1464-0325(200110)3:5<454:CAEOLP>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
ESI-FAIMS-MS; CHARGE; WATER; IDENTIFICATION; MATRICES; CHLORIDE; NITRATE; ZEOLITE; SOILS; ION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
43
Recensione:
Indirizzi per estratti:
Indirizzo: Urbansky, ET US EPA, Off Res & Dev, Natl Risk Management Res Lab, Water Supply & Water Resources Div, 26 W Martin Luther King Dr, Cincinnati, OH 45268 USA US EPA 26 W Martin Luther King Dr Cincinnati OH USA 45268 USA
Citazione:
E.T. Urbansky e T.W. Collette, "Comparison and evaluation of laboratory performance on a method for the determination of perchlorate in fertilizers", J ENVIR MON, 3(5), 2001, pp. 454-462

Abstract

This report details the interlaboratory validation of a method for the determination of perchlorate in fertilizers. In this method (EPA/600/R-01/026), a solid sample of fertilizer is ground. Subsequently, the ground materialis either leached with deionized water to dissolve any perchlorate salt inthe case of minimally soluble fertilizers (e.g. supertriplephosphate or timed-release products), or simply dissolved in the case of highly soluble fertilizers (e.g. urea, NaNO3 or KCI). The resulting aqueous solution is thensubjected to ion chromatography with suppressed conductivity detection, Four laboratories applied the method to field samples of 48 different products (commodity chemicals) and to seven quality control samples prepared by the Environmental Protection Agency (EPA). Additional tests were conducted bythree other laboratories on specific materials. Recovery was demonstrated on spikes of known concentration, and a preliminary assured reporting levelwas determined for each fertilizer matrix by each laboratory. Injection-to-injection precision was satisfactory: generally less than 15% difference, and always less than 25%, All of the laboratories used Dionex IonPac AG16 guard and AS16 separation columns with NaOH or KOH as eluent. Detection was by suppressed conductivity. The method was shown to be sufficiently robust for the screening of fertilizers for perchlorate, but performance was low on a mixture of siliceous minerals (kaolinite and bentonite). Both laboratory performance and method performance are validated.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/09/20 alle ore 05:25:50