Determination of vanadium by solvent extraction-graphite furnace atomic absorption spectrometry using an improved graphite tube

Kuga, Kazuo

doi:10.2116/bunsekikagaku.29.11_t90

Cited by 4 publications

(3 citation statements)

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“…The BPHA-CHCl 3 extraction system is advantageous over ammonium pyrrolidine dithiocarbamate (APDC)-MIBK for extracting antimony from water samples and the subsequent determination by ETAAS at concentrations even down to 0.2 μg L −1 using Cu as a matrix modifier. The BPHA-CHCl 3 system also extracts Mo and V. 139 BPHA initially behaved as a suitable chelating agent for V, although other authors also used N -cinnamoyl- N -phenyl hydroxyl amine (CPHA) for the same purpose. In the ETAAS analysis of V, CPHA exhibited a better sensitivity than BTHA, although CPHA also simultaneously extracted other elements, generating potential interferent effects.…”

Section: Amines As Organic Extractantsmentioning

confidence: 99%

“…136,137 Several amines are used as complexing agents in combination with ETAAS (Fig. 2 and Table 3): N-benzoyl-N-phenyl hydroxyl amines (BPHA), 40,138,139 aromatic O-diamines (phenylene diamine), 140 N-benzoyl-O-tolyl hydroxylamine (BTHA), Ncinnamoyl-N-(2,3-xylyl)hydroxyl amine (CXHA) 135 TOA, 36,141 ethylenediamine, 142 and amberlite LA-2 (secondary amine). 143 Similarly, as in FAAS, the amines used in ETAAS are usually tertiary, behaving as liquid exchangers and chelating agents in extracting non-solvated salts.…”

Section: Amines As Complexing Agents In Etaasmentioning

confidence: 99%

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Taking a deeper look into the roles of amines in atomic absorption spectrometry

Aller,

Pereira

2024

J. Anal. At. Spectrom.

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Section: Amines As Organic Extractantsmentioning

confidence: 99%

Section: Amines As Complexing Agents In Etaasmentioning

confidence: 99%

Taking a deeper look into the roles of amines in atomic absorption spectrometry

Aller,

Pereira

2024

J. Anal. At. Spectrom.

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“…Solvent extraction with IV-benzoyl-lV-phenylhydroxylamine with subsequent graphite furnace atomic absorption determination of the vanadium in the extract has been reported for iron and steel analysis (252). The furnace method has also been used directly for acid solutions of steels (84).…”

Section: Vanadiummentioning

confidence: 99%

Water analysis

Fishman¹,

Erdmann²,

Garbarino³

1983

Anal. Chem.

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This review is produced from a search of the literature as performed with the DIALOG capabilities of Chemical Abstracts Service. The material covered in this particular review is a continuation of past reviews by the same authors and covers the period from September 1980 to October 1982 It is obvious that the level of activity in the publication of research results by analytical chemists and spectrographers in the steel industry is significantly reduced and directly reflects the malais that affects our industry. Without being overly critical, we will have approximately 300 less literature citations in this review as compared to the last one (448). ALUMINUMTotal trace aluminum was determined spectro hotometpriate dissolution steps as an Eriochrome Cyanine R complex (98), by using Chromazol KS as a color-forming agent (269), as a colored complex with salicylidene-o-aminophenol-4sulfonic acid (523), and with l-pheny1-2,3-dimethylpyrazolone-5-azopyrogallol (13).Low levels of A1 have been determined in high-and lowalloy steels and ferrovanadium by atomic absorption after separation from the matrix by electrolysis (94). The determination of acid soluble aluminum by AA continues to be a very popular method in the steel industry by virtue of its rapidity (51,76,511). Low concentrations were also determined in silicon steels by using electrothermal atomization (245). Direct injection of a dissolved steel sample into an AI-H flame has been reported (282).AA has not supplanted emission spectrochemical methods for this determination as they continue to be used for both soluble and insoluble aluminum determinations in steel (135,304). One method involves the premelting of a selected zone on a sample surface in an inert atmosphere so as to concentrate the insoluble aluminum inclusions in the surface of the remelted zone upon which the surface is mechanically removed and subsequently analyzed spectrally for the soluble portion (76). A design for an instrument has been claimed that eliminates anomalous emission spectrometric signals from aluminum inclusions, thus permitting the determination of acid-soluble A1 with high precision (452). rically in some unalloyed and low-alloyed steels a P ter appro-Various other procedures have been applied in a general way for the analysis of steel and related materials and include the use of lasers for localized sampling prior to spectral excitation (208,311), Grimm glow-discharge source excitation (466), ICP emission spectrometry (15,101), an acid dissolution, ignition, and NaF fluxing prior to dc arc excitation for stainless-steel analysis (299), and the use of dc plasma techniques for iron ores, sinters, and dust analysis (369).The accuracy of XRF spectrometry for determining A1 in low-alloy and stainless steels (at <0.1%) has reportedly been improved by adding granular FeZr to the molten metal during sampling (184). Conversely, a rapid and high percision XRF method for the determination of the A1203 content of steels has been described (317). Procedures for the routine XRF analysis of iron...

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Flame atomic absorption spectrometric method for the determination of beryllium in natural waters after separation with N-benzoyl-N-phenylhydroxylamine

Robles¹,

García-Olalla²,

Alemany³

et al. 1991

Analyst

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A procedure for the determination of beryllium in natural waters is proposed. A solvent extraction step was performed in order to overcome interferences and isolate beryllium before it was atomized by direct nebulization of the organic phase in a dinitrogen oxide-acetylene flame. N-Benzoyl-N-phenylhydroxylamine was used as the extractant whilst isobutyl methyl ketone was the organic solvent. The effects of pH, amine concentration in the organic phase, shaking time, stability of the complex and nature of the extracted species were studied. The detection limit and linear response range are 2 ng ml-1 and 0-1.0 microgram ml-1, respectively. The result obtained for a standard reference material compared well with the quoted value.

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Determination of vanadium by solvent extraction-graphite furnace atomic absorption spectrometry using an improved graphite tube

Cited by 4 publications

References 0 publications

Taking a deeper look into the roles of amines in atomic absorption spectrometry

Taking a deeper look into the roles of amines in atomic absorption spectrometry

Water analysis

Flame atomic absorption spectrometric method for the determination of beryllium in natural waters after separation with N-benzoyl-N-phenylhydroxylamine

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