Computer controlled-flow injection potentiometric system based on virtual instrumentation for the monitoring of metal-biosorption processes

被引：9

作者：

Florido, A. ^{[1
]}

Valderrama, C. ^{[1
]}

Nualart, S. ^{[1
]}

Velazco-Molina, L. ^{[2
]}

Arias de Fuentes, O. ^{[2
]}

del Valle, M. ^{[3
]}

机构：

[1] Univ Politecn Cataluna, Dept Engn Quim, E-08028 Barcelona, Spain

[2] Univ La Habana, Inst Ciencia & Tecnol Mat, Havana 10400, Cuba

[3] Univ Autonoma Barcelona, Grp Sensors & Biosensors, Dept Quim, E-08193 Barcelona, Spain

来源：

ANALYTICA CHIMICA ACTA | 2010年 / 668卷 / 01期

关键词：

Grape stalk wastes; Copper sorption; Virtual instrument; Ion-selective electrode; Flow-injection potentiometry; On-line monitoring; ION-SELECTIVE ELECTRODES; SHELL ACTIVATED CARBON; AQUEOUS-SOLUTIONS; GRAPE STALKS; FIXED-BED; SEQUENTIAL INJECTION; ANIONIC SURFACTANTS; STREAM TECHNIQUES; WATER ANALYSIS; HEAVY-METALS;

D O I：

10.1016/j.aca.2010.01.019

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A completely automated flow-injection system was developed for the monitoring of biosorption studies of Cu(II) ion on vegetable waste by-products. The system employed flow-through Cu(II)-selective electrodes, of epoxy-resin-CuS/Ag2S heterogeneous crystalline type, and computer controlled pumps and valves for the flow operation. Computer automation was done through a specially devised virtual instrument, which commanded and periodically calibrated the system, allowing for the monitoring of Cu(II) ions between 0.6 and 6530 mg L-1 at a typical frequency of 15 h(-1). Grape stalk wastes were used as biosorbent to remove Cu(II) ions in a fixed-bed column with a sorption capacity of 5.46 mg g(-1), obtained by the developed flow system, while the reference determination performed by FAAS technique supplied a comparable value of 5.41 mg g(-1). (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：26 / 34

页数：9

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