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Nanometer gold resonance scattering spectrometry for simply and rapidly measuring trace amount Ti

A rapid measurement and resonant scattering technology, applied in Raman scattering, scattering characteristic measurement, color/spectral characteristic measurement, etc., can solve problems that have not been seen before, and achieve the effect of low cost, convenient operation and simple equipment

Inactive Publication Date: 2008-12-17
GUANGXI NORMAL UNIV
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Problems solved by technology

Combining the immune reaction of nano-gold labels with resonance scattering spectroscopy, a resonance scattering spectroscopy analysis method with high sensitivity and good selectivity has been established; so far, no complex reaction and nano-gold aggregation reaction have been combined with resonance scattering spectroscopy. Report on Determination of Titanium with Combination of Techniques

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  • Nanometer gold resonance scattering spectrometry for simply and rapidly measuring trace amount Ti
  • Nanometer gold resonance scattering spectrometry for simply and rapidly measuring trace amount Ti
  • Nanometer gold resonance scattering spectrometry for simply and rapidly measuring trace amount Ti

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Embodiment Construction

[0022] Detect the content of titanium in 3 parts of industrial waste water with the method of the present invention.

[0023] Cary eclipse fluorescence spectrophotometer (the US VARIAN excitation slit and emission slit both select 5nm, PMT detector voltage selection 400V), Nano-ZS90 nanometer particle size and zeta potential analyzer (Malvern, UK).

[0024] 9.8 mg / mL H 2 SO 4 solution; 2.16×10 -2 mol / L H 2 o 2 Solution, the concentration is calibrated by potassium permanganate method; 1.0% HAuCl 4 ; 1.0% trisodium citrate; all reagents used were of analytical grade, and the experimental water was twice distilled water.

[0025] 1. Nano-gold is prepared by sodium citrate reduction method: put 100.0 mL of sub-boiling water in a clean Erlenmeyer flask to boil, add 1.00% chloroauric acid 1 mL under stirring, quickly add 4.0 mL of 1.00% sodium citrate aqueous solution, continue Boil for 15 minutes, take it off, stir for 15 minutes without heating, cool, dilute to 100.0mL, and...

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Abstract

The invention discloses a nano-Au resonance scattering spectrographic method for conveniently and rapidly detecting trace titanium, which is characterized in that the method comprises the following steps: (1) preparing a measuring system with the known titanium concentration, and measuring the resonance scattering intensity (IRS) thereof; (2) preparing a reagent blank system, and measuring the resonance scattering light intensity (IRS)0 without adding the Ti(SO4)2 solution as the blank,; (3) calculating based on that Delta IRS is equal to IRS minus (IRS)0; (4) plotting a work curve with the concentration of the added Ti(SO4)2 solution as the abscissa and the Delta IRS as the ordinate; (5) preparing a detecting system, measuring the titanium content in the industrial wastewater and obtaining Delta IRS of the sample to be measured; and (6) obtaining the titanium concentration of the sample to be measured according to the work curve. The method has the advantages of simple device, convenient operation, easily-accessible reagent and low cost, and can be carried out by only a fluorescence spectrophotometer.

Description

Technical field: [0001] The invention relates to a method for measuring trace titanium, in particular to a nano-gold resonance scattering spectrometry method for simple and rapid determination of trace titanium. Background technique: [0002] Titanium is a common element widely present in various rocks, seawater and living organisms. Titanium has the function of stimulating plant growth and enhancing immunity in the living body; it is called a biophilic metal in medicine, and can be used as artificial bone to treat fractures; in addition, titanium is also an ideal superconducting material. play a very important role in the development. At present, the methods for determining trace titanium at home and abroad mainly include: spectrophotometry, coordination titration, high performance liquid chromatography, atomic emission spectrometry, atomic absorption spectrometry, plasma emission spectrometry, plasma mass spectrometry, flow injection analysis methods and electrochemical ...

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Application Information

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IPC IPC(8): G01N21/78G01N21/25G01N21/65G01N21/51
Inventor 张玉兰刘庆业蒋治良
Owner GUANGXI NORMAL UNIV
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