Derivative spectrophotometric determination of holmium in rare earth mixtures with 2-(diphenylacetyl)indan-1,3-dione and octylphenyl poly(ethyleneglycol) ether

Wang, Nai‐Xing; Jiang, Wei; Si, Zhikun; Yang, Jinghe; Liang, Weian

doi:10.1007/bf01242329

Cited by 11 publications

(3 citation statements)

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“…In 1996, determination of dysprosium, holmium and erbium in high purity rare earth oxides by second order derivative spectrophotometry [3] and neodymium, erbium and holmium in rare earth mixtures with 2-phenyltrifluoroacetone and octylphenol poly(ethyleneglycol) ether by third-derivative spectrophotometry [4] were reported. Wang et al [5] has also developed spectrochemical methods and Li et al [6] have reported an electrochemical method, adsorption voltammetry, at a carbon paste electrode. These methods are either time consuming, involving multiple sample manipulations, or are too expensive for most analytical laboratories.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of a novel holmium(III) PVC membrane sensor based on 4-chloro-1,2-bis(2-pyridinecarboxamido)benzene as a neutral ionophore

et al. 2007

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This paper introduces the development of an original PVC membrane electrode, based on 4-chloro-1,2-bis(2-pyridinecarboxamido)benzene (CBPB) as a suitable carrier for the Ho 3+ ion. The electrode presents a Nernstian slope of 19.7 ± 0.3 mV per decade for the Ho 3+ ions across a broad working concentration range from 1.0 · 10 -6 to 1.0 · 10 -2 M. The lower detection limit was 8.5 · 10 -7 M in the pH range 2.7-9.8, while the response time was rapid (<15 s). Therefore, this potentiometric sensor displayed good selectivity for a number of cations such as alkali, alkaline earth, transition and heavy metal ions. The practical applicability of the electrode was demonstrated by its use as an indicator electrode in the potentiometric titration of Ho 3+ ions with EDTA and in the determination of F -in mouth wash samples.

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Section: Introductionmentioning

confidence: 99%

Fabrication of a novel holmium(III) PVC membrane sensor based on 4-chloro-1,2-bis(2-pyridinecarboxamido)benzene as a neutral ionophore

et al. 2007

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“…Conventional methods of Ho ion analysis have included neutron activation analysis, ICP-MS, ICP-AES and isotope dilution mass spectrometry. [13][14][15][16][17][18] In recent years, a number of opcode and membrane sensors for selective determination of Ho 3+ (ref. 4,10,[18][19][20][21][22][23][24][25] have been reported.…”

mentioning

confidence: 99%

A highly selective and sensitive turn-on fluorescent probe for the detection of holmium ion and its bioimaging

et al. 2015

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“…4 Due to these applications, holmium ion must be determined very accurately at trace levels. The Ho 3+ ion has been determined directly or indirectly by various conventional and instrumental methods such as spectrometry, inductively coupled plasma-atomic emission spectrometry (ICP-AES), electrochemistry, ICP-MS, neutron activation analysis (NAA), spectrophotometry and X-ray fluorescence spectrometry, [5][6][7][8][9][10][11] but all these methods are time consuming, require large infrastructure back up and relatively expensive. The potentiometric sensors based on ion-selective electrode are the best analytical method for such determination because they offer advantages such as selectivity, sensitivity, low detection limit, simplicity and low cost.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of Holmium (III) Selective Sensors Based on Thiacalixarene and Calixarene Derivatives as an Ionophore

Singh¹,

Rani²

2012

Bulletin of the Korean Chemical Society

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The two chelates based on calix [4]arene and thiacalix [4]arene have been synthesized and used as neutral ionophores for preparing PVC based membrane sensor selective to Ho 3+ ion. The addition of potassium tetrakis(4-chlorophenyl)borate (KTpClPB) and various plasticizers, viz., NDPE, o-NPOE, DOP, TEP and DOS have been found to improve significantly the performance of the sensors. The best performance was obtained with the sensor no. 6 having membrane of L 2 with composition (w/w) ionophore (2%): KTpClPB (4%): PVC (37%): NDPE (57%). This sensor exhibits Nernatian response with slope 21.10 ± 0.3 mV/decade of activity in the concentration range 3.0 × 10 −8 -1.0 × 10 −2 M Ho 3+ ion, with a detection limit of 1.0 × 10 −8 M. The proposed sensor performs satisfactorily over a wide pH range of 2.8-10, with a fast response time (5 s). The sensor was also found to work successfully in partially non-aqueous media up to 25% (v/v) content of methanol, ethanol and acetonitrile, and can be used for a period of 4 months without any significant drift in potential. The electrode was also used for the determination of Ho 3+ ions in synthetic mixtures of different ions and the determination of the arsenate ion in different water samples.

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Derivative spectrophotometric determination of holmium in rare earth mixtures with 2-(diphenylacetyl)indan-1,3-dione and octylphenyl poly(ethyleneglycol) ether

Cited by 11 publications

References 11 publications

Fabrication of a novel holmium(III) PVC membrane sensor based on 4-chloro-1,2-bis(2-pyridinecarboxamido)benzene as a neutral ionophore

Fabrication of a novel holmium(III) PVC membrane sensor based on 4-chloro-1,2-bis(2-pyridinecarboxamido)benzene as a neutral ionophore

A highly selective and sensitive turn-on fluorescent probe for the detection of holmium ion and its bioimaging

Comparative Study of Holmium (III) Selective Sensors Based on Thiacalixarene and Calixarene Derivatives as an Ionophore

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