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Resonance Rayleigh scattering spectrometry for quickly determining sodium hexametaphosphate

A technology of resonance Rayleigh scattering and sodium hexametaphosphate, which is applied in the field of analytical chemistry, can solve the problems that the analysis method of sodium hexametaphosphate has not been reported, and achieves the effects of high sensitivity, stable system and easy operation.

Inactive Publication Date: 2015-02-18
GUANGXI NORMAL UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

Although there are many reports on the detection technology of resonance Rayleigh scattering spectroscopy, there is no report on the analysis method of sodium hexametaphosphate by resonance Rayleigh scattering spectroscopy

Method used

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  • Resonance Rayleigh scattering spectrometry for quickly determining sodium hexametaphosphate

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Embodiment

[0018] Application of resonance Rayleigh scattering spectrometry to measure sodium hexametaphosphate comprises the following steps:

[0019] (1) Prepare sodium hexametaphosphate standard solution system: Take a graduated test tube and pipette 5, 100, 400, 600, 800 μL 1.00×10 -5 The moL / L sodium hexametaphosphate standard solution was added to different test tubes, and then 250 μL of acetic acid-sodium acetate buffer solution with pH 2.6 was added to each test tube in turn, 160 μL 9.9×10 -6 mol / L VBB solution, shake well, react for 20 min, then add 500 μL 4.0×10 -4 moL / L silver nanorod sol, dilute to 2.0 mL with twice distilled water, mix well, and make multiple sodium hexametaphosphate standard solution systems;

[0020] (2) Prepare the blank control solution system: prepare the blank control solution system by the method of step (1) without adding sodium hexametaphosphate standard solution;

[0021] (3) Take an appropriate amount of sodium hexametaphosphate standard solu...

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Abstract

The invention discloses a resonance Rayleigh scattering spectrometry for simply and quickly determining sodium hexametaphosphate. The resonance Rayleigh scattering spectrometry comprises the steps: (1) preparing a sodium hexametaphosphate standard solution system; (2) preparing a blank contrast solution system; (3) respectively determining resonance Rayleigh scattering peak strength values I standard and I blank of the sodium hexametaphosphate standard solution system and the blank contrast solution system, and performing the formula: delta I = I standard - I blank; (4) drafting a working curve of the concentration relation of the sodium hexametaphosphate by using the delta I; (5) determining a sample of an object to be determined, and performing the formula: delta I sample = I sample - I blank; (6) checking the working curve draft in step (4) according to the obtained delta I sample, and calculating the content of the sodium hexametaphosphate in the object to be determined. The resonance Rayleigh scattering spectrometry for simply and quickly determining the sodium hexametaphosphate has the advantages that the utilized devices are simple, the operations are quick, the sensitivity is high, and the selectivity is excellent.

Description

technical field [0001] The invention relates to the field of analytical chemistry, in particular to a resonance Rayleigh scattering spectrometry method for determining sodium hexametaphosphate. Background technique [0002] Sodium hexametaphosphate is a traditional and commonly used food quality improver. In the food industry, it is often used to improve the water holding capacity and cohesion of meat products, prevent fat oxidation; increase the juice yield and viscosity of fruit drinks, and inhibit the decomposition of vitamin C; in addition, it is also used to stabilize natural pigments and pigments in other foods. Color etc. However, excessive addition will destroy various nutrients in food, and long-term accumulation in the human body will cause various diseases such as tumor lesions, skeletal fluorosis, osteosclerosis and osteoporosis, and cause damage to human liver function. Therefore, my country has made clear regulations on the allowable amount of sodium hexameta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64
Inventor 蒋治良尚广云张杏辉温桂清梁爱惠
Owner GUANGXI NORMAL UNIV