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Method for determining trace hydrogen peroxide based on tetrasulfo nickel phthalocyanine

A technology of hydrogen peroxide and hydrogen peroxide solution, which is applied in the measurement of scattering characteristics and the preparation of samples for testing, etc., to achieve the effect of good selectivity and high sensitivity

Inactive Publication Date: 2020-03-24
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to the change of the resonance scattering intensity of the system caused by the change of the nano-gold aggregation state before and after the reaction, a method for the quantitative determination of hydrogen peroxide can be established. This method has not been reported yet.

Method used

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  • Method for determining trace hydrogen peroxide based on tetrasulfo nickel phthalocyanine

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Experimental program
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Embodiment

[0010] In eleven 5mL colorimetric tubes, add 0.08mL pH=5.4 HAc-NaAc buffer solution respectively, the concentration of 0.08mL is 1.0×10 -6 mol / L NiPcS 4 solution, 0.12mL of OPD solution with a concentration of 0.01mol / L, and then sequentially add 0.0, 0.003, 0.005, 0.006, 0.008, 0.013, 0.027, 0.054, 0.081, 0.108, 0.137mL with a concentration of 1.2×10 - 5 mol / L hydrogen peroxide solution, react at room temperature for 15 minutes, then add 0.6mL nano-gold solution with a concentration of 58.0μg / mL in each colorimetric tube, dilute to the mark with twice distilled water, shake well, After continuing to react for 2 minutes, use a 1 cm quartz cuvette to scan the resonance scattering spectrum on the fluorescence photometer in the manner of λex=λem. Measure the resonance scattering intensity I of hydrogen peroxide solution at a wavelength of 700nm 700nm and the resonance scattering intensity I of the reagent blank solution without hydrogen peroxide 0 , to calculate the differenc...

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Abstract

The invention discloses a method for determining trace hydrogen peroxide based on tetrasulfo nickel phthalocyanine. The method comprises the following steps: respectively adding an HAc-NaAc buffer solution, a NiPcS4 solution and an OPD solution into 11 colorimetric tubes; sequentially adding 0.0 mL of H2O2 solution with the concentration of 1.2 * 10 <-5 > mol / L, 0.003 mL of H2O2 solution with theconcentration of 0.003 mL, 0.005 mL of H2O2 solution with the concentration of 0.005 mL, 0.006 mL of H2O2 solution with the concentration of 0.008 mL, 0.013 mL of H2O2 solution with the concentrationof 0.027 mL, 0.054 mL of H2O2 solution with the concentration of 0.081 mL, 0.108 mL and 0.137 mL; respectively adding the nanogold solution after 15 minutes, diluting to 5mL after 2 minutes, and scanning a scattering spectrum on a fluorophotometer in a lambda ex = lambda em manner. The scattering intensity I700nm of the H2O2 solution and the scattering intensity I0 of the reagent blank without H2O2 are respectively measured at the wavelength of 700nm, and the difference value delta I700nm = I700nm-I0 is calculated. The determination method is good in selectivity and high in sensitivity.

Description

technical field [0001] The invention relates to a method for determining trace amounts of hydrogen peroxide, in particular to a resonance scattering spectrometry method for determining hydrogen peroxide based on tetrasulfonyl nickel phthalocyanine. Background technique [0002] As an important chemical reagent and chemical product, hydrogen peroxide is widely used in various fields of production and life. At the same time, hydrogen peroxide is an important participating substance in the enzymatic reaction of biological and environmental processes. It is closely related to various biochemical reactions in the environmental water body and has an important impact on the state of chemical substances in the water environment. Therefore, the detection of hydrogen peroxide content is of great significance in environmental analysis. Among the many methods for determining the content of hydrogen peroxide, resonance scattering spectroscopy has been gradually applied in the determinat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/51G01N1/38
CPCG01N1/38G01N21/51
Inventor 唐宁莉王文平慕欣悦王仪敏黄信张容珲
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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