Fe, Co, Ni, Cu trace metal analysis in ZBLAN fluoride glasses

Bertrand, Didier; Guery, J.; Jacoboni, C.

doi:10.1016/0022-3093(93)90664-j

Cited by 6 publications

(9 citation statements)

References 7 publications

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“…In this process, an organic chelate is introduced to bind to undesired metal ions in an aqueous phase and to transfer the resulting metal‐chelate complexes into a second organic phase. CASE is widely used in analytical chemistry to pre‐concentrate heavy metals for trace analysis . Alternatively, CASE can remove metal‐ion impurities from an aqueous solution of a desired metal ion and thus achieve purification.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of High‐Purity Metal Fluorides for Photonic Applications

Patterson

Stark

Yoshida

et al. 2011

Journal of the American Ceramic Society

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We combine chelate-assisted solvent extraction (CASE) and hot hydrogen fluoride gas treatment to enable a general method for the preparation of high-purity binary metal fluorides. The fluorozirconate glass ZBLANI:Yb 3+ (ZrF 4 -BaF 2 -LaF 3 -AlF 3 -NaF-InF 3 -YbF 3 ), a solid-state laser-cooling material, is used as a test case to quantitatively assess the effectiveness of the purification method. The reduction of transition-metal and oxygen-based impurities is quantified directly by inductively coupled plasma mass spectrometry (ICP-MS) and indirectly by laser-induced cooling, respectively. The concentrations of Cu, Fe, Co, Ni, V, Cr, Mn, and Zn impurities in the ZrCl 2 O precursor solution were measured individually by ICP-MS at various stages of the purification process. CASE was found to reduce the total transition-metal concentration from 72500 tõ 100 ppb. Laser cooling was most efficient in ZBLANI:Yb 3+ glass fabricated from CASE-purified metal fluoride precursors, confirming the results of the ICP-MS analysis and demonstrating the effectiveness of the purification methods in a finished optical material. High-purity metal fluorides prepared by the methods presented herein will enable new high-performance optical materials for solid-state optical refrigerators, crystals for vacuum ultraviolet (VUV) spectroscopy of the Thorium-229 nucleus, VUV optics, fibers, and thin-film coatings.

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Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of High‐Purity Metal Fluorides for Photonic Applications

Patterson

Stark

Yoshida

et al. 2011

Journal of the American Ceramic Society

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“…The basis of metal extraction using DIBK rests on the principle of solvent extraction where a metal in aqueous solution is extracted into an organic phase followed by separation of the organic phase from the aqueous phase (Acharya, 2006). Extraction of metal ions from solutions using DIBK, which has been mixed with a complexing agent for determination of the metal ion concentration, has been investigated by a number of researchers (Acharya, 2006;Honma, 2003;Bertrand et al, 1993;Murakami and Takada, 1992). Murakami and Takada (1992) studied extraction of nickel in approximately 8 M hydrochloric acid solution with ammonium 1-pyrrolidinecarbodithioate (APCD) into DIBK followed by flame atomic-absorption spectrometry.…”

Section: Introductionmentioning

confidence: 99%

“…Murakami and Takada (1992) studied extraction of nickel in approximately 8 M hydrochloric acid solution with ammonium 1-pyrrolidinecarbodithioate (APCD) into DIBK followed by flame atomic-absorption spectrometry. Bertrand et al (1993) used a similar APCD-DIBK system to extract traces of Fe, Co, Ni and Cu from ZBLAN fluoride glasses (ZrF 4 , BaF 2 , LaF 3 , A1F 3 , NaF) dissolved in a 6 N solution of HCl. The traces were then back-transferred into aqueous solution to be analyzed by graphite furnace atomic absorption spectrometry.…”

Section: Introductionmentioning

confidence: 99%

Recycling Potential of Waste Di-Isobutyl-Ketone (DIBK) and Recovery of Residual Gold

Buah¹,

Ofori-Sarpong²,

Banson³

2011

Ghana Mining Journal

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Di-Isobutyl-Ketone (DIBK) has been commonly used in most mining and allied industries to extract gold from aqueous solutions for analytical purposes. In most cases a complexing agent, methyl tricapryl ammonium chloride otherwise called aliquat 336 is added to the DIBK to give a 1% volume by volume solution. The DIBK containing aliquat 336 is then used to extract gold from aqueous solutions for subsequent analysis using Atomic Absorption Spectrophotometry (AAS). After the AAS analysis the DIBK-aliquat solution containing gold is stored as waste since its disposal is often associated with environmental and health problems. This paper investigated the possibility of using distillation to recover gold contained in the waste generated in Ghana as well as the recycling potential of the distillate (regenerated DIBK). It was established that distillation of the waste DIBK yielded about 92% distillate leaving a residue of tar, which contained all the gold in the waste. Thermal oxidation of the residue followed by conventional cyanidation of the resulting ash led to gold recovery of 98.97% and the gold extraction efficiency of the regenerated DIBK compares very well with that of fresh DIBK.

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“…This is particularly important in extractions between CO 2 and water, in that exposure to high-pressure CO 2 quickly leads to pH values of 3.0 and below . The chelating headgroup used in this study, a dithiocarbamate, was chosen from the literature based on its affinity for target metals at low pH's. ,− Ammonium pyrrolidinedithiocarbamate (APDC) is a member of the commonly used sulfur-containing chelating agents, one which forms stable complexes with ions having partially filled d orbitals and ions with fully filled d orbitals and low positive charge. Exchange reactions of diethyl dithiocarbamate with some metals revealed the following order of stability for the chelating agent: Hg 2+ > Pd 2+ > Cu 2+ > Ti 3+ > Ni 2+ > Bi 3+ > Co 3+ > Co 2+ > Ti + > Zn 2+ > In 2+ > Sb 3+ > Fe 3+ > Te 4+ >Mn 3+ > Mn 2+ .…”

Section: Introductionmentioning

confidence: 99%

“…APDC has been used to extract metal ions (Co, Cu, Ni, Zn, Cd, Fe, Pb, Ag) into organic solvent under acidic conditions (pH = 1.0−6.0) . Further, Fe, Co, Cu, and Ni were quantitatively extracted into diisobutyl ketone using APDC as the chelating agent at the optimum pH of 2.3 for trace metal analysis in ZBLAN fluoride glasses . APDC was also employed in the extraction of trace elements (Sb, In, Cu, Co, Cd, Hg, Zn) into organic solvent at high extraction efficiencies (>90%) for ultratrace elemental characterization of high-purity materials .…”

Section: Introductionmentioning

confidence: 99%

Affinity Extraction into CO₂. 2. Extraction of Heavy Metals into CO₂ from Low-pH Aqueous Solutions

Beckman

1998

Ind. Eng. Chem. Res.

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Because it is an environmentally benign solvent, CO2 is increasingly being evaluated as a medium with which to perform liquid−liquid extraction from water (unlike conventional organic solvents, no contamination of the aqueous phase results). A number of researchers have explored the design of highly CO2-soluble chelating agents to allow extraction of metal ions, yet the low pH of water in contact with CO2 (2.8−3.0) can lead to poor extraction efficiencies with many common chelating agents. In this paper, we describe the generation of a CO2-soluble analogue to ammonium pyrrolidinedithiocarbamate, an agent which has been shown to effectively extract a variety of metal ions at pH's as low as 1.0. We have found that the CO2-soluble analogue can extract high fractions of copper, nickel, and cadmium, although, like conventional APDC, extraction of chromium was less successful.

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Fe, Co, Ni, Cu trace metal analysis in ZBLAN fluoride glasses

Cited by 6 publications

References 7 publications

Preparation and Characterization of High‐Purity Metal Fluorides for Photonic Applications

Preparation and Characterization of High‐Purity Metal Fluorides for Photonic Applications

Recycling Potential of Waste Di-Isobutyl-Ketone (DIBK) and Recovery of Residual Gold

Affinity Extraction into CO₂. 2. Extraction of Heavy Metals into CO₂ from Low-pH Aqueous Solutions

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Fe, Co, Ni, Cu trace metal analysis in ZBLAN fluoride glasses

Cited by 6 publications

References 7 publications

Preparation and Characterization of High‐Purity Metal Fluorides for Photonic Applications

Preparation and Characterization of High‐Purity Metal Fluorides for Photonic Applications

Recycling Potential of Waste Di-Isobutyl-Ketone (DIBK) and Recovery of Residual Gold

Affinity Extraction into CO2. 2. Extraction of Heavy Metals into CO2 from Low-pH Aqueous Solutions

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Affinity Extraction into CO₂. 2. Extraction of Heavy Metals into CO₂ from Low-pH Aqueous Solutions