INTEGRAL FLOW-INJECTION ANALYSIS SYSTEM WITH DATA CONTROL AND ACQUISITION SYSTEMS FOR GENERAL APPLICATIONS IN QUANTITATIVE ANALYSIS

• Main Authors: ALVARO GARCIA TORRES, SILVIA GUTIERREZ GRANADOS, MARTIN ALEJANDRO ALATORRE ORDAZ, LUIS ARMANDO GARCIA DE LA ROSA
• Format: Patent
• Language: English; Spanish
• Published: 28.02.2008
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

Described is an original design relative to an integral analysis system performed by flow injection, of the amperometric type, which includes a bi-modular cylindrical-shape (2 asymmetric hemicycles) FIA cell for facilitating the handling and operation thereof, using working and reference electrodes, as well as the flow channels of an electrolyte disposed at 45??. The easy system for assembling the cell and the blocking process thereof performed by clamps warranty a leakage-less operation and a fast manipulation thereof. The highest cost of a system for performing an amperometric analysis refers to tools and software required to control a device, and acquire and manage data, thus a potentiostate acquired with minimum electronic elements in Hardware and Software by a virtual Instrumentation Language LabView 7.0 (r) is obtained and mainly characterised in that it acquires and displays analysis results in real time and selfscale by a virtual instrument specially designed for a specific dev ice. The FIA cell accessories have a plurality of improvements, thereby obtaining a powerful quantitative analysis instrument at a low cost, which may be adapted to analysis systems performed by flow injection, such as the chromatography process. Se presenta un diseno original de un sistema integral de analisis por inyeccion en flujo, de tipo amperometrico que incluye un diseno de la celda FIA en forma cilindrica-bi-modular (2 hemiciclos asimetricos), para facilitar su manejo y operacion, con una disposicion de los electrodos de trabajo y de referencia, asi como de los canales de flujo del electrolito a 45??. El sistema de ensamble de la celda sencillo y el bloqueo a base de abrazaderas garantizan una operacion sin fugas, y rapida manipulacion. El mayor costo de un sistema de analisis amperometrico, es la instrumentacion y software requeridos, para el control del dipositivo, la adquisicion y el manejo de datos; en este sentido, el potenciostato realizado con elementos electronicos minimos necesarios en Hardware, y el resto en software, mediante el lenguaje de instrumentacion virtual LabView 7.0(r), cuyo principal atributo es la adquisicion y presentacion de resultados del analisis en tiempo real, y autoescalamiento, por medio de un instrumento virtual, disenado especialmente para el dispositivo. Se presentan una serie de mejoras en los accesorios de la celda FIA, y todo esto se refleja en la obtencion de un poderoso instrumento de analisis cuantitativo a bajo costo, que puede adaptarse a sistemas de analisis por inyeccion en flujo, como la cromatografia.