Method for measuring bromine in brine through filter paper method sample preparation and X-ray fluorescent spectrometry

A technology of fluorescence spectroscopy and filter paper, which is applied in the field of filter paper sample preparation-X fluorescence spectrometry to determine bromine in brine, achieving the effects of good precision, high test accuracy and low analysis cost

Inactive Publication Date: 2015-04-01
山东省第四地质矿产勘查院
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However, the use of thin film adsorption sample preparation-wavelength dispersive X

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  • Method for measuring bromine in brine through filter paper method sample preparation and X-ray fluorescent spectrometry
  • Method for measuring bromine in brine through filter paper method sample preparation and X-ray fluorescent spectrometry
  • Method for measuring bromine in brine through filter paper method sample preparation and X-ray fluorescent spectrometry

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[0019] The following are specific examples of the present invention, further describing the technical solutions of the present invention, but the protection scope of the present invention is not limited to these examples. All changes or equivalent substitutions that do not depart from the concept of the present invention are included in the protection scope of the present invention.

[0020] A method for sample preparation by filter paper method-X fluorescence spectrometry to measure bromine in brine, comprising the following steps:

[0021] 1) Cut chromatographic filter paper with a pore size of 30-50 microns or 80-120 microns into discs with a diameter of 40 mm, and place them on two parallel nylon filaments of equal height, with the distance between the filaments being 35 mm;

[0022] 2) Accurately absorb 50 μL brine sample with a quantitative liquid dispenser, carefully drop it on the center of the filter paper, the liquid spreads evenly around the center of the filter pap...

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Abstract

The invention relates to a method for measuring bromine in brine through filter paper method sample preparation and X-ray fluorescent spectrometry. Appropriate filter paper is selected for sample preparation, a standard curve is drawn with X-ray fluorescent spectrometry, and the content of bromine in brine is measured through comparison of sample tests. By means of the method for measuring bromine in brine through filter paper method sample preparation and X-ray fluorescent spectrometry, main problems of narrow linearity range, large errors, poor accuracy and precision and the like of a conventional bromine analytical test method are solved, and the method is fast, simple and convenient; compared with the conventional method, the analytical test efficiency is improved by 2-3 times, the analysis cost is low, and the material cost is 10% of that consumed in a sodium hypochloriteoxidation and iodometric method; the testing accuracy is high, the precision is good, the method detection limit is low, and the analysis requirement is met; and besides, the method doesn't need chemical reagent treatment, is particularly suitable for measuring a liquid with bromine content larger than 0.95 mg/L, realizes efficient and environment-friendly bromine measurement and is a real green analysis method.

Description

technical field [0001] The invention belongs to the technical field of analysis and testing, and relates to a method for determining bromine in brine, in particular to a method for determining bromine in brine by sample preparation by a filter paper method-X fluorescence spectrometry. Background technique [0002] Bromine is an active halogen element with low boiling point physical properties. Bromine is widely used in medicine, pesticides, dyes, flame retardants, fire extinguishing agents, refrigerants, photosensitive materials, oil exploration and other fields, and has a broad industrial Application prospects. Bromine is strongly dispersed in the crustal hydrosphere only in the form of bromide ions. Volcanism, degassing of magmatic rocks in the crust and metamorphism of the deep crust are important factors for the source of bromine. Bromine resources mainly exist in brine systems such as seawater, salt lake brine, and underground brine. Although the bromine reserves in se...

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Application Information

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IPC IPC(8): G01N23/223G01N1/28
Inventor 陈景伟宋江涛周长祥宋双喜汤云芝石丽华占发旺李玉明伦会荣李鹏耿楠
Owner 山东省第四地质矿产勘查院
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