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Catalytic Absorption Determination of Graphene Oxide Nanoribbons Modulated by Sodium Tetraphenylborate + Methods

A technology of graphene nanobelt and sodium tetraphenyl boron, which is applied in the field of analytical chemistry and achieves the effects of high sensitivity and simple method

Inactive Publication Date: 2020-02-14
GUANGXI NORMAL UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

But using sodium tetraphenylborate to control the catalytic activity of graphene oxide nanoribbons to determine K + The method of surface plasmon resonance absorption spectroscopy has not been reported yet

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  • Catalytic Absorption Determination of Graphene Oxide Nanoribbons Modulated by Sodium Tetraphenylborate <sup>+</sup> Methods

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Embodiment

[0024] A Kind of Using Sodium Tetraphenylborate to Regulate the Catalytic Absorption of Graphene Oxide Nanobelts to Determine K + The method includes the following steps:

[0025] (1) Prepare a known concentration of K + Standard solution system: In 5 graduated test tubes, add 10μL, 150μL, 250μL, 300μL, 400μL 10μmol / L K + Standard solution, then add 150μL of 47.5ng / mL graphene oxide nanoribbons, 400μL of 10μmol / L sodium tetraphenylborate solution, 50μL of 0.3mol / L glucose, and 150μL of 1mmol / L AgNO into each graduated test tube. 3 React with 25μL 0.5mol / L NaOH solution in a 60℃ water bath for 5 minutes, shake well, add 100μL 1mol / L NaCl, then cool to room temperature with ice water, and dilute to 2.0 mL with double distilled water;

[0026] (2) Prepare blank control solution system: use step (1) without adding K + Standard solution preparation blank control solution system;

[0027] (3) Take the K prepared according to steps (1) and (2) respectively + Pour the standard solution system...

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Abstract

The invention discloses a method of determining K<+> via a surface plasmon resonance absorption spectrum by regulating catalytic activity of a graphite oxide nanoribbon with a sodium tetraphenylborateligand. The method is characterized by comprising the following steps of: (1) preparing a K<+> standard solution system with a known concentration, (2) preparing a blank control solution system, (3)calculating delta A equal to A minus A0, (4) taking a concentration relationship between delta A with K<+> as a working curve, (5) calculating delta A[sample] equal to A[sample] minus A0, and (6) calculating a content of K<+> in a sample solution according to the working curve of step (4). The measuring method adopts the ligand to regulate the nano enzyme catalytic activity, and is simple, convenient, quick and high in sensitivity.

Description

Technical field [0001] The invention relates to the field of analytical chemistry, in particular to a catalytic absorption determination of graphene oxide nanoribbons using sodium tetraphenylborate to regulate the K + Methods. Background technique [0002] Potassium ion (K + ) Is an important physiological element, and Na + Together, it plays an extremely important role in maintaining cell metabolism, regulating body fluid osmotic pressure, maintaining acid-base balance, and maintaining cell stress functions. At the same time, potassium ions play different roles in the process of biological growth, including neurotransmission. , Enzyme activation, cell apoptosis, regulating blood pressure and the concentration of other ions in cells, K between intracellular and extracellular fluids + Disturbances in ion concentration are always related to a series of diseases, including alcoholism, anorexia, excessive appetite, AIDS and kidney disease. Therefore, K + The detection of ions has beco...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/552
Inventor 李重宁李丹蒋治良梁爱惠彭宇涛
Owner GUANGXI NORMAL UNIV