Method for measuring bromide ions and iodide ions simultaneously

A technology of iodide ion and bromide ion is applied in the field of analysis and testing, which can solve the problems of complicated operation, expensive instruments, long time consumption, etc., and achieves the effect of simple and fast analysis process and low measurement cost.

Inactive Publication Date: 2014-02-12
QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the disadvantages of expensive instruments, cumbersome operation, long time consumption, and high chlorine interference in the prior art when simultaneously measuring trace amounts of bromide ions and iodide ions in water, and provide a low-cost, simple and fast simultaneous determination of bromide ions in water. bromide and iodide methods

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  • Method for measuring bromide ions and iodide ions simultaneously
  • Method for measuring bromide ions and iodide ions simultaneously
  • Method for measuring bromide ions and iodide ions simultaneously

Examples

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Effect test

Embodiment 1

[0078] Example 1: Simultaneous determination of bromine and iodide ion content in underground brine in a certain area

[0079] Drawing of standard curve: prepare 0-0.12mmol / L iodide ion standard solution, use quartz cuvette on UV spectrophotometer, measure and draw the standard curve of iodide ion at two wavelengths of 250.0nm and 220.0nm A 250 nm 1 = 0.591 5 C I - + 0041 ( R 2 = 0.9976 ) , A 220 nm = 10.917 6 C I - + 0.01121 ( ...

Embodiment 2

[0083] Example 2: Simultaneous determination of bromine and iodide ion content in seawater in a certain sea area.

[0084] Drawing of standard curve: prepare 0-0.12mmol / L iodide ion standard solution, use quartz cuvette on UV spectrophotometer, measure and draw the standard curve of iodide ion at two wavelengths of 225.0nm and 205.0nm A 225 nm 1 = 13.4823 C I - + 0.01494 ( R 2 = 0.9998 ) , A 205 nm = 5.1997 C I - + 0.0153 ( R 2 = ...

Embodiment 3

[0088] Example 3: Simultaneous determination of bromine and iodide ions in a saltwater lake

[0089] Drawing of standard curve: prepare 0-0.12mmol / L iodide ion standard solution, use quartz cuvette on UV spectrophotometer, measure and draw the standard curve of iodide ion at two wavelengths of 237.5nm and 212.5nm A 237.5 nm 1 = 6.0146 C I - + 0.01239 ( R 2 = 0.9997 ) , A 212.5 nm = 5.0060 C I - + 0.00963 ( R 2 = ...

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Abstract

The invention provides a method for measuring bromide ions and iodide ions simultaneously. According to the method, the bromide ions and the iodide ions in water are simultaneously measured by a dual-wavelength spectrophotometry according to optical adsorption properties of ultraviolet regions of the bromide ions and the iodide ions; an analysis process is simple and quick; the measurement cost is low; the method disclosed by the invention can be used for simultaneous and quick measurement of trace bromide ions and trace iodide ions in systems such as seawater, river water, lake water, underground water, drinking water and bittern.

Description

【Technical field】 [0001] The invention relates to an analysis and test method, in particular to a method for simultaneously measuring bromide ions and iodide ions. 【Background technique】 [0002] Bromide ions and iodide ions widely exist in seawater, river water, lake water, groundwater, drinking water, brine and other systems. There's important meaning. [0003] The national standard GB / T23845-2009 "General method for the determination of bromide in inorganic chemical products" and the coal industry standard MTT893-2000 "Determination method for bromine in coal mine water" provide the method that chloramine T oxidizes bromide ions in a slightly acidic medium Form elemental bromine, and then react with phenol red to form tetrabromophenol red, the solution color is yellow-green to purple with the increase of bromide ion content, within a certain concentration range, the absorbance is proportional to the bromide ion content. The chemical industry standard HG / T3811-2006 "Indu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/33
Inventor 张慧芳李权郭敏李明珍吴志坚
Owner QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
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