Direct potentiometric immunoelectrodes |
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| Authors: | Lydia Engel and Wolfram Baumann |
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| Institution: | (1) Institute of Inorganic Chemistry and Analytical Chemistry, University of Mainz, D-55099 Mainz, Germany |
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| Abstract: | A method is described to determine Atrazine and its cross-reacting relatives in water, using a previously described graphite based one-way immunoelectrode and any standard millivoltmeter with low input bias current. The new procedure separates the potential measuring step from the incubation step. In this way, the conditions for highly stable potential measurements and for a most effective formation of the hapten (Atrazine) antibody complex can be optimized separately and all imponderable influence from ions in the analyte water is excluded. The limit of detection of such an electrode is some nanogram per liter.Part III: see 4] |
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