LTCC meso-analytical system for chloride ion determination in drinking waters

Ibáñez-García, Núria; Gonçalves, Rita; Rocha, Zaira M. da; Gongora-Rubio, Mário Ricardo; Seabra, Antônio Carlos; Alonso-Chamarro, Julián

doi:10.1016/j.snb.2006.04.063

Cited by 37 publications

(29 citation statements)

References 24 publications

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“…The employed hydrodynamic and chemical conditions of the simple three-channel flow injection analysis system were taken according to previous experience [21,23,25] and that sample throughput will not be a critical parameter (2-4 samples h À1 is a common value) for an automated environmental analyzer but working under unattended conditions. A volume of 200 mL of nitrate and chloride standard solutions is injected in a MilliQ deionized water, which is used as a carrier solution.…”

Section: Resultsmentioning

confidence: 99%

“…Our proposal involves the miniaturization of such continuous flow systems using the LTCC technology, taking profit of the inherent good performance of potentiometric detection systems when scaling-down [21,22] and of the easy integration of potentiometric ion-selective electrodes (ISEs) in microfluidic platforms [21,23,24]. The proposed miniaturized biparametric analyzer monolithically integrates a nitrate polyvinyl chloride (PVC)-based ISE, which was previously optimized in our research group [25] and two screen-printed Ag/AgCl electrodes.…”

Section: Introductionmentioning

confidence: 99%

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Biparametric Potentiometric Analytical Microsystem Based on the Green Tape Technology

et al. 2010

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The construction and evaluation of a Low Temperature Co-fired Ceramics (LTCC)-based microsystem prototype as a possible on-site microanalyzer to monitor the presence of two ions in water simultaneously is presented. The approach has been assayed to detect nitrate and chloride ions as model analytes by means of integrating in the same single substrate an ion selective polymeric membrane to nitrate and two screen-printed Ag/AgCl electrodes. One supplies the chloride ion concentration and the other is to complete the potentiometric detection system as the reference electrode. The results obtained by the full characterization of the microanalyzer prove the relevance of the proposal and the possibility to be transferred to real-world samples and environmental monitoring.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Biparametric Potentiometric Analytical Microsystem Based on the Green Tape Technology

et al. 2010

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“…Moreover, LTCC provides an excellent substrate for the monolithic integration of the whole elements allowing complex and small three-dimensional continuous flow analytical systems. In previous work, the suitability of this technology for the fabrication of miniaturized flow systems was demonstrated [29,30]. Monitoring of heavy metals [28] Monitoring of environmental pollutants in natural and wastewaters: integration of the potentiometric detection system [29,30] In the present work, the integration of a temperature control circuit in a flow system will be presented and discussed to show the suitability of the LTCC technology to integrate microfluidics and electronics monolithically.…”

Section: Introductionmentioning

confidence: 88%

LTCC microflow analyzers with monolithic integration of thermal control

Martínez-Cisneros

Ibáñez-García

Valdés

et al. 2007

Sensors and Actuators A: Physical

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Recently, the low temperature co-fired ceramics technology has shown to be an excellent alternative to silicon-based microfabrication techniques for the production of three-dimensional structures using a multi-layer approach. This enables the integration of several unitary operations of a classical analytical process and also the integration of sensors, actuators and electronics in the same substrate. In this work, we show the integration of the actuators and the sensors needed for the control of temperature inside a miniaturized fluidic device. The proposed device presents enough thermal accuracy to be used in chemical systems where temperature control is a crucial factor, such as enzyme reactions or polymerase chain reaction systems.

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“…The basic geometry of this mixer consisted of an ''Lshape'' section that turns the fluid through 90 on the same plane. 18 The fluid is later guided to an upper/lower plane by means of a 90 rotation angle. The flow cell, placed after the three-dimensional mixer, was designed using a ''Z-shape'' configuration to define a horizontal channel that allowed obtaining a longer optical pathway when compared with conventional miniaturized analyzers based on colorimetric determinations.…”

Section: Microanalyzer Fabricationmentioning

confidence: 99%