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Combined electrographic, flow injection and chemiluminescent analysis method

A chemiluminescence and flow injection technology, which is applied in the field of quantitative analysis, can solve the problems that solid samples cannot be directly analyzed, the time required for analysis is long, and only liquid samples can be analyzed, so as to achieve fast analysis speed, high analysis accuracy, Analyze the effect of high sensitivity

Inactive Publication Date: 2004-08-11
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The advantage of this method is that it can directly perform quantitative analysis on solid samples with high precision, and can simultaneously measure various ions contained in solid samples, but its disadvantage is that the sensitivity of the analysis is low, and the analysis needs longer time
Flow injection-chemiluminescence combined method is a high-sensitivity analysis method that has emerged in recent years. This method uses flow injection to inject samples, and determines the content of metal ions according to the intensity of luminescence of the metal ions in the sample that are catalyzed by the luminescent agent. The disadvantage of this method is that it can only analyze liquid samples and cannot directly analyze solid samples.

Method used

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  • Combined electrographic, flow injection and chemiluminescent analysis method
  • Combined electrographic, flow injection and chemiluminescent analysis method

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Experimental program
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Effect test

Embodiment 1

[0025] This embodiment is for the Fe in the solid sample 2+ To detect, the steps are as follows:

[0026] 1. Prepare washing solution, pushing solution, oxidizing solution and luminescent solution

[0027] The washing solution is at a concentration of 1×10 -3 mol / L HNO 3 Aqueous solution, prepared by nitric acid and deionized water; driving liquid is deionized water; oxidizing liquid has a concentration of 1×10 -3 mol / L H 2 o 2 Aqueous solution, prepared by hydrogen peroxide and deionized water; luminescent liquid is a mixed aqueous solution of luminol and disodium edetate, containing 1×10 -4 mol / L luminol, 5×10 -4 mol / L disodium edetate, pH 10, prepared from luminol, disodium edetate and deionized water, adjust the pH value with sodium hydroxide.

[0028] 2. Surveying and mapping sample spectrum

[0029] use figure 1 The indicated process flow is designed for automatic analyzer mapping. (1) put the Fe-containing solid sample into the electric spectrum sample prepara...

Embodiment 2

[0035] This embodiment is for the Fe in the solid sample 3+ To detect, its steps, instruments used, oxidation solution, luminescence solution and impetus solution are all the same as in Example 1. The difference from Example 1 is that the washing solution is selected at a concentration of 1 × 10 -3 mol / L HCl and 1×10 -2 mol / L NaHSO 3 Mix the aqueous solutions.

Embodiment 3

[0037] This embodiment is for the Cu in the solid sample 2+ Check rules, the steps are as follows:

[0038] 1. Prepare washing solution, pushing solution, oxidizing solution and luminescent solution

[0039] The washing solution is at a concentration of 1×10 -3 mol / L HNO 3 Aqueous solution, prepared by nitric acid and deionized water; driving liquid is deionized water; oxidizing liquid is 1×10 -2 mol / L H 2 o 2 Aqueous solution, prepared by hydrogen peroxide and deionized water; luminescent liquid is a mixed aqueous solution of luminol and Coomassie brilliant blue, containing 1.5×10 -4 mol / L luminol, 2×10 -6 mol / L Coomassie Brilliant Blue, pH 11, prepared from luminol, Coomassie Brilliant Blue and deionized water, the pH value was adjusted with sodium hydroxide.

[0040] 2. Surveying and mapping sample spectrum

[0041] Adopted instrument, surveying and mapping method are all identical with embodiment 1.

[0042] 3. Surveying and mapping standard sample spectrum

[00...

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Abstract

This invention relates to a method for adding electrography sample-making on the bases of joint process of flow injection-chemical luminescence. The surveying and mapping method is as follows: 1. putting solid sample or authentic sample in the electrographic sample making device to operate on the spectrum to generate tested ions to become sample solution with cleaning mixture 2. the mixed solution of oxidation, luminescent and driving enters into the chemical luminescent device and the detector shows unchanged electro signals to be processed by computer to form basic lines to the surveyed and mapped 3 mixture of the said three solutions enters into chemical generation device and the detector displays changed electric signals to be processed by the computer to form spectrum chart to be surveyed and mapped.

Description

1. Technical field [0001] The invention relates to a method for quantitatively analyzing solid samples such as steel, alloy and ore. 2. Background technology [0002] Regarding the quantitative analysis methods of metal ions in solid samples such as iron and steel, alloys, ores, there are currently methods such as electric spectrum-ion chromatography, flow injection-chemiluminescence coupling method, etc. Electrospectrum-ion chromatography is to prepare a solid sample into a sample solution by electrospectrometry, and quantitatively determine the metal ions in the sample solution by chromatography. The advantage of this method is that it can directly perform quantitative analysis on solid samples with high precision, and can simultaneously measure various ions contained in solid samples, but its disadvantage is that the sensitivity of the analysis is low, and the analysis needs longer time. Flow injection-chemiluminescence combined method is a high-sensitivity analysis met...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/76G01N35/00G01N35/08
Inventor 张新申蒋小萍
Owner SICHUAN UNIV