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Titolo:
Multiresidue analysis of pesticides in vegetables and fruits using a high capacity absorbent polymer for water
Autore:
Obana, H; Akutsu, K; Okihashi, M; Kakimoto, S; Hori, S;
Indirizzi:
Osaka Prefectural Inst Publ Hlth, Higashinari Ku, Osaka 5370025, Japan Osaka Prefectural Inst Publ Hlth Osaka Japan 5370025 saka 5370025, Japan
Titolo Testata:
ANALYST
fascicolo: 8, volume: 124, anno: 1999,
pagine: 1159 - 1165
SICI:
0003-2654(199908)124:8<1159:MAOPIV>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
SUPERCRITICAL-FLUID EXTRACTION; ACCELERATED SOLVENT-EXTRACTION; SAMPLE PREPARATION; RESIDUES; FOODS; CHROMATOGRAPHY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Physical, Chemical & Earth Sciences
Citazioni:
17
Recensione:
Indirizzi per estratti:
Indirizzo: Obana, H Osaka Prefectural Inst Publ Hlth, Higashinari Ku, 1-3-69 Nakamichi, Osaka 5370025, Japan Osaka Prefectural Inst Publ Hlth 1-3-69 Nakamichi Osaka Japan 5370025
Citazione:
H. Obana et al., "Multiresidue analysis of pesticides in vegetables and fruits using a high capacity absorbent polymer for water", ANALYST, 124(8), 1999, pp. 1159-1165

Abstract

A single extraction and a single clean-up procedure was developed for multi-residue analysis of pesticides in non-fatty vegetables and fruits. The method involves the use of a high capacity absorbent polymer for water as a drying agent in extraction from wet food samples and of a graphitized carboncolumn for clean-up. A homogeneously chopped food sample (20 g) and polymer (3 g) were mixed to absorb water from the sample and then 10 min later the mixture was vigorously extracted with ethyl acetate (100 ml). The extract(50 ml), separated by filtration, was loaded on a graphitized carbon column without concentration. Additional ethyl acetate (50 ml) was also eluted and both eluates were concentrated to 5 ml for analysis. The procedure for sample preparation was completed within 2 h. In a recovery test, 107 pesticides were spiked and average recoveries were more than 80% from asparagus, orange, potato and strawberry. Most pesticides were recovered in the range 70-120% with usually less than a 10% RSD for six experiments. The results indicated that a single extraction with ethyl acetate in the presence of polymer can be applied to the monitoring of pesticide residues in foods.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 13/07/20 alle ore 09:58:51