Spectrophotometic flow injection determination of lead in Port wine using in-line ion-exchange concentration

Teresa I.M.S. Lopes; António O.S.S. Rangel; Raquel P. Sartini; Elias A.G. Zagatto

doi:10.1039/an9962101047

Spectrophotometic flow injection determination of lead in Port wine using in-line ion-exchange concentration

Teresa I.M.S. Lopes, António O.S.S. Rangel, Raquel P. Sartini, Elias A.G. Zagatto

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12 Citations (Scopus)

Abstract

A flow injection system with in-line ion exchange is proposed for the spectrophotometric determination of lead in Port wine. A Chelex-100 resin mini-column (200-400 mesh) is used for lead concentration, and the chromogenic reaction is based on the formation of a ternary complex between lead, Malachite Green and iodide. Forty-five digested wine samples can be run per hour (25-500 μg l^-1 Pb) and results are comparable to those obtained by ETAAS. Other features are the measurement precision (RSDs lower than 2.6%), a detection limit of 12 μg l^-1 and a sampling rate of 45 h^-1.

Original language	English
Pages (from-to)	1047-1050
Number of pages	4
Journal	Analyst
Volume	121
Issue number	8
DOIs	https://doi.org/10.1039/an9962101047
Publication status	Published - Aug 1996

Keywords

Flow injection analysis
Ion exchange
Lead determination
Port wine
Spectrophotometry

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10.1039/an9962101047

http://hdl.handle.net/10400.14/4314

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title = "Spectrophotometic flow injection determination of lead in Port wine using in-line ion-exchange concentration",

abstract = "A flow injection system with in-line ion exchange is proposed for the spectrophotometric determination of lead in Port wine. A Chelex-100 resin mini-column (200-400 mesh) is used for lead concentration, and the chromogenic reaction is based on the formation of a ternary complex between lead, Malachite Green and iodide. Forty-five digested wine samples can be run per hour (25-500 μg l-1 Pb) and results are comparable to those obtained by ETAAS. Other features are the measurement precision (RSDs lower than 2.6%), a detection limit of 12 μg l-1 and a sampling rate of 45 h-1.",

keywords = "Flow injection analysis, Ion exchange, Lead determination, Port wine, Spectrophotometry",

author = "Lopes, {Teresa I.M.S.} and Rangel, {Ant{\'o}nio O.S.S.} and Sartini, {Raquel P.} and Zagatto, {Elias A.G.}",

year = "1996",

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T1 - Spectrophotometic flow injection determination of lead in Port wine using in-line ion-exchange concentration

AU - Lopes, Teresa I.M.S.

AU - Rangel, António O.S.S.

AU - Sartini, Raquel P.

AU - Zagatto, Elias A.G.

PY - 1996/8

Y1 - 1996/8

N2 - A flow injection system with in-line ion exchange is proposed for the spectrophotometric determination of lead in Port wine. A Chelex-100 resin mini-column (200-400 mesh) is used for lead concentration, and the chromogenic reaction is based on the formation of a ternary complex between lead, Malachite Green and iodide. Forty-five digested wine samples can be run per hour (25-500 μg l-1 Pb) and results are comparable to those obtained by ETAAS. Other features are the measurement precision (RSDs lower than 2.6%), a detection limit of 12 μg l-1 and a sampling rate of 45 h-1.

AB - A flow injection system with in-line ion exchange is proposed for the spectrophotometric determination of lead in Port wine. A Chelex-100 resin mini-column (200-400 mesh) is used for lead concentration, and the chromogenic reaction is based on the formation of a ternary complex between lead, Malachite Green and iodide. Forty-five digested wine samples can be run per hour (25-500 μg l-1 Pb) and results are comparable to those obtained by ETAAS. Other features are the measurement precision (RSDs lower than 2.6%), a detection limit of 12 μg l-1 and a sampling rate of 45 h-1.

KW - Flow injection analysis

KW - Ion exchange

KW - Lead determination

KW - Port wine

KW - Spectrophotometry

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SP - 1047

EP - 1050

JO - Analyst

JF - Analyst

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ER -

Spectrophotometic flow injection determination of lead in Port wine using in-line ion-exchange concentration

Abstract

Keywords

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