Coprecipitation with yttrium phosphate as a separation technique for iron(III), lead, and bismuth from cobalt, nickel, and copper matrices

Kagaya, Shigehiro; Araki, Yasuko; Hirai, Noriyasu; Hasegawa, Kiyoshi

doi:10.1016/j.talanta.2005.02.013

Cited by 47 publications

(24 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In many cases, the usage of a separation and/or preconcentration method is required prior to analysis of the samples in order to improve the sensitivity and accuracy of atomic spectrometric techniques. For this purpose, solvent extraction, 1 ion-exchange, 2,3 electrolytic deposition, 4 vaporization, 5 solid-phase extraction, 6,7 and coprecipitation with phosphates, [8][9][10][11] hydroxides, [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27] various dithiocarbamates, [28][29][30][31][32][33] have been proposed for preconcentration and separation of analyte ions from various matrix media. Döner and Ege 34 have investigated for the determination of copper, cadmium and lead in aqueous solutions by flame atomic absorption spectrometry after coprecipitating with aluminum hydroxide.…”

Section: Introductionmentioning

confidence: 99%

Determination of Heavy Metals at Sub-ppm Levels in Seawater and Dialysis Solutions by FA AS after Tetrakis(pyridine)-nickel(II)bis(thiocyanate) Coprecipitation

2008

View full text Add to dashboard Cite

A coprecipitation method has been developed for the determination of Cr(III), Mn(II), Fe(III), Co(II), Cu(II), Cd(II) and Pb(II) ions in aqueous samples by flame atomic absorption spectrometry (FAAS) with the combination of pyridine, nickel(II) as a carrier element and potassium thiocyanate as an auxiliary complexing agent. The obtained coprecipitates were dissolved with nitric acid and measured by FAAS. The coprecipitation conditions, such as the effect of the pH, amounts of nickel, pyridine and potassium thiocyanate, sample volume, and the standing time of the precipitate formation were examined in detail. It was found that the metal ions studied were quantitatively coprecipitated with tetrakis(pyridine)-nickel(II)bis(thiocyanate) precipitate (TP-Ni-BT) in the pH range of 9.0 -10.5. The reliability of the results was evaluated by recovery tests, using synthetic seawater solutions spiked with the analyte metal ions. The obtained recoveries ranged from 96 to 101% for all of the metal ions investigated. The proposed method was validated by analyses of two certified reference materials (NIST SRM 2711 Montana soil and HPS Certified Waste Water Trace Metals Lot #D532205). It was also successfully applied to seawater and dialysis solution samples. The detection limits (n = 25, 3s) were in the range of 0.01 -2.44 mg l -1 for the studied elements and the relative standard deviations were £6%, which indicated that this method could fully satisfy the requiremets for analysis of such samples as seawater and dialysis solution having high salt contents.

show abstract

Section: Introductionmentioning

confidence: 99%

Determination of Heavy Metals at Sub-ppm Levels in Seawater and Dialysis Solutions by FA AS after Tetrakis(pyridine)-nickel(II)bis(thiocyanate) Coprecipitation

2008

View full text Add to dashboard Cite

show abstract

“…As one kind of important bismuth-containing oxysalts, bismuth phosphate (BiPO 4 ) is a typical compound that crystallizes in two polymorphs such as hexagonal phase and monoclinic phase, which have found potential applications in catalysis, sensors, and many other functional materials for separating radioactive elements [7][8][9]. In addition, BiPO 4 was reported to be an excellent host for rare-earth ions that can yield luminescence and a novel photocatalyst for degrading organic dyes [7,10].…”

Section: Introductionmentioning

confidence: 99%

Solvothermal synthesis and characterization of hierarchical spindle-like BiPO₄aggregates

et al. 2016

MATEC Web of Conferences

View full text Add to dashboard Cite

Abstract. Monodispersed spindle-like BiPO 4 aggregates with uniform morphology and size were prepared by a solvothermal route with ethylene glycol (EG)/water as mixed solvent, bismuth nitrate and sodium tripolyphosphate (STPP) as raw materials. The products were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and UV-vis absorption spectroscopy. The results indicate that obtained BiPO4 products are hexagonal phase and have good crystallinity and high purity. Additionally, it is found that the both STPP and mixed solvent play a crucial role in the formation of the spindle-like BiPO 4 aggregates, which are constructed through oriented aggregation of nanoparticles. The possible formation process was initially presented. Moreover, the bandgap energy of these novel spindle-like BiPO 4 aggregates is also estimated as 3.46eV from the UV-vis absorption spectrum.

show abstract

“…We previously reported that yttrium phosphate is an excellent coprecipitant for Pb, Fe and Bi. 4,5) This coprecipitant not only removes Na, K, Mg and Ca but also aggregates the elements to be measured. In the present report, we utilized this coprecipitation technique to determine seven elements (Al, Cr, Fe, Zn, Cd, Pb and Bi) in crude drugs by ICP-AES.…”

Section: Introductionmentioning

confidence: 99%

Determination of Al, Cr, Fe, Zn, Cd, Pb and Bi in Crude Drugs by Inductively Coupled Plasma Atomic Emission Spectrometry after Coprecipitation with Yttrium Phosphate

Araki¹,

Kagaya

Sakai

et al. 2008

JOURNAL OF HEALTH SCIENCE

View full text Add to dashboard Cite

A novel method that combines inductively coupled plasma atomic emission spectrometry (ICP-AES) with a coprecipitation technique to determine trace and sub-trace elements in crude drugs is described herein. Yttrium phosphate quantitatively coprecipitated seven elements (Al, Cr, Fe, Zn, Cd, Pb and Bi) at pH 6 in a solution prepared from microwave-digested samples of crude drugs. Some matrix elements such as Na, K, Mg and Ca were effectively removed by this process. The thus coprecipitated elements were then determined by ICP-AES with yttrium as an internal standard element. The detection limits (3σ, n = 10) were 0.17 mg/kg for Al, 0.004 mg/kg for Cr, 0.03 mg/kg for Fe, 0.13 mg/kg for Zn, 0.004 mg/kg for Cd, 0.19 mg/kg for Pb and 0.06 mg/kg for Bi. The proposed method was successfully utilized to determine the concentration of the above-mentioned seven elements in standard reference materials [National Institute of Standards Technology (NIST) SRM1515, SRM1547 and SRM1575a] and seven kinds of crude drugs.

show abstract

Coprecipitation with yttrium phosphate as a separation technique for iron(III), lead, and bismuth from cobalt, nickel, and copper matrices

Cited by 47 publications

References 34 publications

Determination of Heavy Metals at Sub-ppm Levels in Seawater and Dialysis Solutions by FA AS after Tetrakis(pyridine)-nickel(II)bis(thiocyanate) Coprecipitation

Determination of Heavy Metals at Sub-ppm Levels in Seawater and Dialysis Solutions by FA AS after Tetrakis(pyridine)-nickel(II)bis(thiocyanate) Coprecipitation

Solvothermal synthesis and characterization of hierarchical spindle-like BiPO₄aggregates

Determination of Al, Cr, Fe, Zn, Cd, Pb and Bi in Crude Drugs by Inductively Coupled Plasma Atomic Emission Spectrometry after Coprecipitation with Yttrium Phosphate

Contact Info

Product

Resources

About

Coprecipitation with yttrium phosphate as a separation technique for iron(III), lead, and bismuth from cobalt, nickel, and copper matrices

Cited by 47 publications

References 34 publications

Determination of Heavy Metals at Sub-ppm Levels in Seawater and Dialysis Solutions by FA AS after Tetrakis(pyridine)-nickel(II)bis(thiocyanate) Coprecipitation

Determination of Heavy Metals at Sub-ppm Levels in Seawater and Dialysis Solutions by FA AS after Tetrakis(pyridine)-nickel(II)bis(thiocyanate) Coprecipitation

Solvothermal synthesis and characterization of hierarchical spindle-like BiPO4aggregates

Determination of Al, Cr, Fe, Zn, Cd, Pb and Bi in Crude Drugs by Inductively Coupled Plasma Atomic Emission Spectrometry after Coprecipitation with Yttrium Phosphate

Contact Info

Product

Resources

About

Solvothermal synthesis and characterization of hierarchical spindle-like BiPO₄aggregates