Determination of trace metal impurities in high purity silver by two step selective precipitation separation followed by neutron activation analysis

Shiue, M. Y.; Yeh, J. J.; Yang, Mo‐Hsiung; Sun, Yuh‐Chang; Yang, J. Y.

doi:10.1039/a807137c

Cited by 10 publications

(3 citation statements)

References 22 publications

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“…9). The cause of this deviation may be the impurities of trace metals, such as Zn, Fe, Co, Ni and Hg containing even in the highpurity silver, 28 but in order to confirm this assumption a separate detailed study is required which is planned in the near future. It means that the temperature coefficients OCP T are almost similar at the concentration range investigated (0.1-1 mol L −1 ) and its average value is ca.…”

Section: Resultsmentioning

confidence: 99%

Characterization of Ag/Ag2SO4 system as reference electrode for in-situ electrochemical studies of advanced aqueous supercapacitors

Gromadskyi

2016

J Chem Sci

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Silver metal covered by Ag 2 SO 4 was investigated as a reference electrode for flat three-electrode cells. The potential stability of the Ag/Ag 2 SO 4 electrode in neutral aqueous solutions utilized as electrolytes for asymmetric high-voltage supercapacitors is reported. It was found that the potential drift and temperature coefficient of this reference electrode are insignificant. Its use as an alternative to the Ag/AgCl electrode enables one to avoid the contamination of the supporting electrolyte solution by Cl − anions, which are oxidized earlier than water molecules and other oxygen-containing anions (SO 2− 4 or NO − 3). Using the data obtained from threeelectrode electrochemical measurements with the electrode in question, a graphene-carbon nanotube/MnO 2 supercapacitor cell accumulating 9.8 Wh kg −1 of specific energy at 1.75 V was built.

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Section: Resultsmentioning

confidence: 99%

Characterization of Ag/Ag2SO4 system as reference electrode for in-situ electrochemical studies of advanced aqueous supercapacitors

Gromadskyi

2016

J Chem Sci

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“…A variety of analysis techniques such as inductively coupled plasma spectroscopy [23,24], neutron activation analysis [25,26], gravimetry [27] and atomic absorption spectroscopy [28] are established and reported for measuring the purity level of the silver specimen. However, these methods are highly destructive and toxic and require a complex procedure.…”

Section: Introductionmentioning

confidence: 99%

A simple green synthesis of pure and sterling silver nanoparticles via pulsed laser ablation in deionized water: characterization and comparison

Aman¹,

Omar²,

Samavati³

et al. 2022

Phys. Scr.

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Pure silver (Ag) and its alloy nanoparticles (NPs) with intense and tunable SPR bands in the visible region are widely exploited for biosensors, information storage, and solar energy systems. Pure Ag and Sterling silver (Ag92.5Cu7.5) NPs were synthesized by the laser ablation method in deionized water using a pulsed Nd:YAG laser. The prepared NPs were characterized and compared for their structural, morphological, and optical properties. The X-ray diffraction (XRD) and selected area electron diffraction (SAED) results revealed that the NPs have polycrystalline nature with five lattice directions. The diffraction peak positions for Ag92.5Cu7.5 NPs exhibited an average redshift of 0.1 ̊ compared to pure Ag NPs due to the presence of copper atoms in the composite crystal unit cell structure. The formation of spherical NPs with an average size of 9.1 nm and 8.4 nm for Ag and Ag92.5Cu7.5 NPs was confirmed using transmission electron microscopy (TEM) and high-resolution TEM (HRTEM). It was found that the concentration of synthesized Ag92.5Cu7.5 alloy NPs was considerably higher than that of pure Ag NPs. Going from pure to alloy silver NPs, the wavelength of surface plasmonic resonance (SPR) peak shifted from 400 nm to 395 nm. The UV-Vis absorption spectra at different aging times revealed that pure Ag colloidal solution is relatively stable. Both colloidal solutions exhibited a similar pattern of photoluminescence (PL) emission spectra with peaks in the blue region.

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“…During recent years, lots of enrichment technologies have been proposed to concentrate heavy metals in environmental samples, including solvent extraction [6~8] , co-precipitation [9] , adsorption [10,11] and ion exchange [12,13] . Extraction procedures are not economical considering the handling of large volumes sample solution.…”

Section: Introductionmentioning

confidence: 99%

Anion Ion Exchange Fiber Based on Polyacrylonitrile (PAN) Matrixes and Its Selective Adsorption for Heavy Metal Ions

Zhang

Wei

Wang

et al. 2010

AMR

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The purpose of this paper was to evaluate the capacity of anion ion exchange fiber to uptake the heavy metal(Co2+、Cu2+、Zn2+、Cd2+、Pb2+、Ag+) from the water. A new polyamine-type ion exchange fiber(IEF) based on polyacrylonitrile (PAN) with higher exchange capacities was prepared by crosslinking through hydrazine hydrate, followed reacting with diethylene triamine. FT-IR analysis indicated that amine, imido, acylamino and carboxyl groups were introduced into PAN fiber through the surface modified reaction of cross linking and amination. The structures of the IEF were characterized by means of SEM. The results showed that the surface of fiber became rougher and thicker and more heterogeneous. The static and dynamic adsorption experiments demonstrated the high selective adsorption property of the IEF for Ag+ and Cu2+. Furthermore, the adsorption mechanism for the metal ions with IEF was investigated with the FT-IR spectra studies.

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Determination of trace metal impurities in high purity silver by two step selective precipitation separation followed by neutron activation analysis

Cited by 10 publications

References 22 publications

Characterization of Ag/Ag2SO4 system as reference electrode for in-situ electrochemical studies of advanced aqueous supercapacitors

Characterization of Ag/Ag2SO4 system as reference electrode for in-situ electrochemical studies of advanced aqueous supercapacitors

A simple green synthesis of pure and sterling silver nanoparticles via pulsed laser ablation in deionized water: characterization and comparison

Anion Ion Exchange Fiber Based on Polyacrylonitrile (PAN) Matrixes and Its Selective Adsorption for Heavy Metal Ions

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