The role of neutron activation with radiochemistry in geoanalysis

Parry, S. J.

doi:10.1016/0375-6742(92)90054-c

Cited by 9 publications

(4 citation statements)

References 51 publications

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“…For the determination of these metals in different materials several sophisticated instrumental methods [3], often with low limits of detection (LODs), are applied. Atomic absorption spectrometry (AAS) [4,5,6,7,8], inductively coupled plasma-mass spectrometry (ICP-MS) [9,10,11,12,13,14,15,16], neutron activation analysis (NAA) [17,18,19,20,21,22], etc., are usually used for the determination of these metals. Most of them need prior separation and enrichment to avoid matrix interference and to enhance sensitivity (coprecipitation, fire assay, solvent extraction, ion-exchange, flotation, etc.…”

Section: Introductionmentioning

confidence: 99%

Determination of platinum(IV) by UV spectrophotometry

Georgieva

Andonovski

2003

Anal Bioanal Chem

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A simple, rapid and sensitive spectrophotometric procedure for the determination of platinum has been elaborated. Pt traces were determined in the form of the PtCl(6)(2-) complex in hydrochloric acid solution whose concentration varies from 0.01 to 2 mol L(-1) by measuring the absorbance at 260 nm. The detection limit is 4.7 x 10(-7) mol L(-1), the linearity range from 2 x 10(-6) mol L(-1) to 7 x 10(-6) mol L(-1), and the correlation coefficient is r=0.9990. No significant interferences were observed from a majority of the investigated ions, such as Zn(II), Pb(II), Mn(II), Cd(II), Co(II) and Ni(II) with the exception of Cu(II), Sb(III), Fe(III), Pd(II), Sn(II) and I(-) ions. The method was successfully applied for the determination of Pt traces in different solid samples and the recovery from inorganic materials was studied.

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Section: Introductionmentioning

confidence: 99%

Determination of platinum(IV) by UV spectrophotometry

Georgieva

Andonovski

2003

Anal Bioanal Chem

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“…Rhodium, which has short-lived nuclides, is not determined by RNAA. Parry 97 and Artem'ev 98 in their review articles discussed in detail the various radiochemical separation procedures employed for the precious 100 Nguyen 101 and other workers 15,17,[102][103][104][105][106][107][108] have utilized the NAA technique for the precious metal analysis in different types of samples. The full details of the procedures are given in Table 10.…”

Section: Radiochemical Neutron Activation Analysis (Rnaa)mentioning

confidence: 99%

Analytical techniques for the determination of precious metals in geological and related materials

Reddi¹,

Rao²

1999

Analyst

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Development of near-infrared fluorophoric labels for the determination of fatty acids separated by capillary electrophoresis with diode laser induced fluorescence detection-David L. Gallaher, Jr., Mitchell E. Johnson 1547 Identification of non-target compounds using gas chromatography with simultaneous atomic emission and mass spectrometric detection (GC-AED/MS): analysis of municipal wastewater-Leo L. P. van Stee, Pim E. G. Leonards, René J. J. Vreuls, Udo A. Th. Brinkman 1553 Adsorption of water vapour in the solid sorbents used for the sampling of volatile organic compounds-Janusz Gaw/ lowski, Tomasz Gierczak, Agnieszka Jeżo, Jan Niedzielski 1559 Determination of carphedon in human urine by solid-phase microextraction using capillary gas chromatography with nitrogen-phosphorus detection-Seungki Kim, Joon-Ho Park, Seung-Woon Myung, Dong-Seok Lho 1563 Detection of N,NA-diphenyl-N,NA-dimethylurea (methyl centralite) in gunshot residues using MS-MS method-Zhuping Wu,

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“…A number of methods for sample preparation, matrix separation and/or pre-concentration and instrumental techniques have been developed and applied for quantification of platinumgroup elements (PGE) in the last decade [2,3,4,5,6,7,8,9,10,11]. The analytical challenges can be summarized as follows:…”

Section: Introductionmentioning

confidence: 99%

Platinum determination by inductively coupled plasma–sector field mass spectrometry (ICP–SFMS) in different matrices relevant to human biomonitoring

et al. 2003

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The analytical challenges of Pt determination by ICP-SFMS posed by different human tissues and fluids have been critically assessed. Investigated samples were (1) urine, (2) serum of cancer patients sampled during chemotherapy with carboplatin, (3) microdialysates (20 micro L sample volume) collected from tumor and non-tumor tissue, and, finally-for the first time-(4) human lung tissue to study background concentrations of inhaled platinum. Sample preparation involved microwave digestion and open vessel treatment or simple dilution (microdialysates). Depending on the sample preparation and introduction systems used (microconcentric nebulization, ultrasonic nebulization with and without membrane desolvation) excellent procedural detection limits (3s criterion) of 0.35 pg g(-1) for urine, 420 pg g(-1) for serum, 400 pg g(-1) for lung tissue and 13 pg g(-1) for microdialysates could be obtained. Ultratrace concentrations of 1-40 pg g(-1), and 1000-3000 pg g(-1) were measured in urine and human lung tissue, respectively, as typical for samples in environmental studies. Quantification was carried out by IDMS and standard addition in the case of urine samples. Internal standardization could not correct for non-spectral interferences in external calibration. In the serum and microdialysates of patients during chemotherapy with carboplatin, elevated Pt levels ranging between 0.01 and 10 micro g g(-1) were determined by external calibration ((195)Pt isotope). For all investigated samples spectral interferences could be excluded by following different strategies. High-resolution control measurements ((194)Pt, (195)Pt) were performed in the case of elevated Pt levels, i.e. for microdialysates and serum samples. An Hf/Pt ratio of 0.4 was determined in human lung samples. An HfO formation ratio of 0.2% was assessed for standard solutions at the present experimental conditions, revealing that the contribution of (179)Hf(16)O, (178)Hf(17)O, (177)Hf(18)O to the (195)Pt isotope signal used for quantification was not significant.

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The role of neutron activation with radiochemistry in geoanalysis

Cited by 9 publications

References 51 publications

Determination of platinum(IV) by UV spectrophotometry

Determination of platinum(IV) by UV spectrophotometry

Analytical techniques for the determination of precious metals in geological and related materials

Platinum determination by inductively coupled plasma–sector field mass spectrometry (ICP–SFMS) in different matrices relevant to human biomonitoring

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