نتایج جستجو برای: potentiometric determination
تعداد نتایج: 253339 فیلتر نتایج به سال:
The interest in nuclear safeguards is constantly growing, as more nuclear programs are being exposed all over the world. In this work, a simple, rapid and reliable method has been applied for the determination of uranium content in aqueous media based on using potentiometric sensor. The developed tool was found to be capable of verifying the operator declarations in a wide concentration range w...
We here report on the first example of an aptamer-based potentiometric sandwich assay of proteins. The measurements are based on CdS quantum dot labels of the secondary aptamer, which were determined with a novel solid-contact Cd2+-selective polymer membrane electrode after dissolution with hydrogen peroxide. The electrode exhibited cadmium ion detection limits of 100 pM in 100 mL samples and o...
Received 10/6/2009 Accepted 14/2/2010 (004240) 1 Laboratório L11 de Pesquisa Química Analítica e Inorgânica, Departamento de Química, Mestrado em Ciência e Tecnologia de Alimentos, Universidade Estadual de Ponta Grossa – UEPG, Av. Carlos Cavalcanti, 4748, CEP 84030-900, Ponta Grossa – PR, Brasil, E-mail: [email protected] *Corresponding author Determination of pectin methylesterase activity in co...
Determination of the composition and stability of metal-ion mandelate complexes was performed as a part of systematic investigations of unsubstituted and substituted metal-ion monocarboxylate complexes in our laboratory. The intention was to give some insight into factors governing the stability of these complexes-. In order to complete this study the same experimental conditions (i. e. tempera...
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