Copper determination after FI on-line sorbent preconcentration using 1-nitroso-2-naphthol as a complexing reagent

Ali, Akbar; Ye, Yingxue; Xu, Guiqing; Yin, Xingtian

doi:10.1007/s002160051538

Cited by 19 publications

(5 citation statements)

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“…Both reagents were compared for the KR sorption preconcentration of copper and nickel. Ali et al 4 applied 1-nitroso-2-naphthol as a complexing agent for on-line preconcentration of copper using RP-C 18 material in a microcolumn with FI-FAAS detection. Ferreira et al 5 proposed a procedure for separation and preconcentration of trace amounts of copper in seawater samples.…”

Section: Introductionmentioning

confidence: 99%

Field sample preconcentration of copper in sea water using chelating minicolumns subsequently incorporated on a flow-injection–flame atomic absorption spectrometry system

Yebra

Carro

Enríquez

et al. 2001

Analyst

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A field flow preconcentration system for copper determination in seawater is described. Seawater samples are collected and preconcentrated in situ by passing them using a peristaltic pump through a minicolumn packed with Amberlite XAD-4 impregnated with the complexing agent 1-(2-pyridylazo)-2-naphthol. Thus, copper is preconcentrated without the interference of the saline matrix. Once in the laboratory, the minicolumns loaded with copper are incorporated on a flow injection system and eluted with a small volume of a 20% (v/v) ethanolic solution of 0.5 mol L-1 hydrochloric acid into the nebuliser-burner system of a flame atomic absorption spectrometer. The analytical figures of merit for the determination of copper are as follows: detection limit (3s), 0.06 microgram L-1; precision (RSD), 1.2% for 2 micrograms L-1; enrichment factor, 30 (using 25 mL of sample and 83 microL of eluent). Analysis of certified reference materials (SLEW-3 and NASS-5) showed good agreement with the certified value. This procedure was applied to the determination of copper in seawater samples from Galicia (Spain).

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Section: Introductionmentioning

confidence: 99%

Field sample preconcentration of copper in sea water using chelating minicolumns subsequently incorporated on a flow-injection–flame atomic absorption spectrometry system

Yebra

Carro

Enríquez

et al. 2001

Analyst

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“…При необходимости определения низких концентраций экотоксикантов применяются проточные методы с атомно-абсорбционным [102,103] и масс-спектрометрическим [104] детектированием. Последние два способа детектирования позволяют, кроме высокой чувствительности, обеспечить многокомпонентность проточного анализа.…”

Section: анализ объектов окружающей средыunclassified

To the question about the definition of a stationary temperature field in the capillary during the passage of electric current and the change in water concentration of impurities in the temperature field

Sharfarets¹,

Курочкин²

2015

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Рассмотрены основные тенденции развития проточных методов анализа как в плане общих схемных решений, так и круга решаемых аналитических задач. Обсуждаются принципы, возможности и ограничения известных методов проточного анализа, их роль в реализации концепции зеленой аналитической химии. Наряду с новыми общими схемами проточного анализа рассматриваются вариации его гибридизации со сложными методами многокомпонентного анализа-спектральными и хроматографическими. Особое внимание уделяется стадии пробоподготовки, включающей методы разделения и концентрирования. Приведены примеры применения проточных методов для автоматизации методик анализа off-line и создания автоматизированных систем аналитического контроля on-line. Среди областей практического применения проточных методов основное внимание уделено анализу объектов окружающей среды, фармацевтике и радиохимическому анализу.

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“…Chemicals with complexing characteristics are also heavily used in the field of pre-concentration; dimethylglyoxime was used for the determination of nickel after on-line sorbent preconcentration by FI-FAAS. 77 Similarly, 1-nitroso-2-naphthol was used as the complexing agent for the determination of copper after FI on-line sorbent pre-concentration by FI-AAS: 78 these procedures are reported by the same author. The absorbent properties of 1,5-diphenylcarbazone-naphthalene with palladium enabled the development of a selective, sensitive, rapid and simple AAS method for the determination of palladium in water.…”

Section: Oilsmentioning

confidence: 99%

Atomic Spectrometry Update. Industrial analysis: metals, chemicals and advanced materials

Fairman¹,

Hinds²,

Nelms³

et al. 2001

J. Anal. At. Spectrom.

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Copper determination after FI on-line sorbent preconcentration using 1-nitroso-2-naphthol as a complexing reagent

Cited by 19 publications

References 0 publications

Field sample preconcentration of copper in sea water using chelating minicolumns subsequently incorporated on a flow-injection–flame atomic absorption spectrometry system

Field sample preconcentration of copper in sea water using chelating minicolumns subsequently incorporated on a flow-injection–flame atomic absorption spectrometry system

To the question about the definition of a stationary temperature field in the capillary during the passage of electric current and the change in water concentration of impurities in the temperature field

Atomic Spectrometry Update. Industrial analysis: metals, chemicals and advanced materials

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