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Title
Extraction, solubility and stability of metal complexes using stainless steel supercritical fluid extraction system
Author:
Ozel, MZ; Bartle, KD; Clifford, AA; Burford, MD;
Addresses:
Univ Pamukkale, Dept Chem, TR-20020 Denizli, Turkey Univ Pamukkale Denizli Turkey TR-20020 pt Chem, TR-20020 Denizli, Turkey Univ Leeds, Sch Chem, Leeds LS2 9JT, W Yorkshire, England Univ Leeds Leeds W Yorkshire England LS2 9JT S2 9JT, W Yorkshire, England Unilever Res Port Sunlight Lab, Wirral L63 3JW, Merseyside, England Unilever Res Port Sunlight Lab Wirral Merseyside England L63 3JW England
Heading Title:
ANALYTICA CHIMICA ACTA
issue: 2, volume: 417, year: 2000,
pages: 177 - 184
SICI:
0003-2670(20000724)417:2<177:ESASOM>2.0.ZU;2-K
Source:
ISI
Language:
ENG
Subject:
FLUORINATED BETA-DIKETONES; CARBON-DIOXIDE; CHELATING-AGENTS; TRIBUTYL-PHOSPHATE; LIQUID MATERIALS; LANTHANIDES;
Keywords:
extraction; solubility; stability; corrosion; metal complex;
Document Type:
Article
Nature:
Serial
Edition:
Physical, Chemical & Earth Sciences
Citations:
25
Reviewed:
Addresses for extracts:
Address: Ozel, MZ Univ Pamukkale, Dept Chem, PK 286, TR-20020 Denizli, Turkey Univ Pamukkale PK 286 Denizli Turkey TR-20020 20 Denizli, Turkey
Citation:
M.Z. Ozel and others, "Extraction, solubility and stability of metal complexes using stainless steel supercritical fluid extraction system", ANALYT CHIM, 417(2), 2000, pp. 177-184

Abstract

Conventional supercritical fluid extraction (SFE) system are constructed using stainless steel due to its relative inertness, ready availability, tensile strength and low cost. Recently, metal complex solubilities and metal extraction using chelating agents have been investigated using a stainless steel SFE system. Metal complexes are usually soluble in supercritical carbon dioxide (SC-CO2) and so this was the fluid of choice for the experiments. During the chelation step, temperature and pressure have great effect on the extraction efficiency. Using a metal salt as a sample, and hexafluoroacetylacetone (HFAcAc) as a Ligand, the most efficient extraction conditions were found to be 60 degrees C and 400 atm. However, when contaminated soil was used as a sample, extraction efficiency fell. This was thought to be related to the corrosion of the stainless steel SFE system by the ligand HFAcAc, During the 30 min extraction period, 1678 mu g of iron was obtained. The corrosion of the SFE system was much greater during the soil extraction than during both the metal salt extraction and metal complex solubility experiments. (C) 2000 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Bologna University, Review Catalogue
Document created on 21/10/19 at 04:26:25