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Method for simultaneously determining inorganic anions and organic acid radical ions in salt lake brine

A technology of organic acid radical ions and inorganic anions, which is applied in the chemical field to achieve the effect of high accuracy and simple method

Inactive Publication Date: 2014-10-08
QINGHAI UNIVERSITY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

At present, the ion chromatography of salt lake brine is mainly for the simultaneous separation and determination of inorganic anions, but the simultaneous separation and determination of organic acid ions and inorganic anions in salt lake brine has not been reported yet.

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  • Method for simultaneously determining inorganic anions and organic acid radical ions in salt lake brine
  • Method for simultaneously determining inorganic anions and organic acid radical ions in salt lake brine

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with specific embodiments. The exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not as a limitation to the present invention.

[0034] In the present invention, each standard product is purchased from Chinese standard product, which is a national standard sample, F - , Cl - , NO 2 - 、Br - , NO 3 - , SO 4 2- Single element standard solution: 1000μg / mL, National Nonferrous Metals and Electronic Materials Analysis and Testing Center; Oxalic acid: National secondary standard substance, (1 / 2)H 2 C 2 o 4 =0.1026mol / L; Glacial acetic acid and sodium formate are analytically pure.

[0035] Method of the present invention comprises the following steps:

[0036] 1) Filter the sample of salt lake brine through a 0.45 μm filter membrane syringe filter to obtain the test solution, and set aside;

[0037] 2) Select 1000μg / L of F - 、CH 3 COO ...

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Abstract

The invention discloses a method for simultaneously determining inorganic anions and organic acid radical ions in salt lake brine. The method is characterized by preprocessing a certain quantity of samples of the salt lake brine, simultaneously separating and determining 6 types of inorganic anions comprising F<-1>, Cl<-1>, NO2<-1>, Br<-1>, NO3<-1> an SO4<2-> and 3 types of organic acid radical ions comprising CH3COO<-1>, HCOO<-1> and C2O4<2-> in the salt lake brine by carrying out secondary gradient elution through an ion chromatography. The result shows that the method is simple and convenient, high in accuracy and capable of providing the important reference basis for simultaneously separating and determining a plurality of anions in the salt lake brine and exploring resources of the salt lake.

Description

technical field [0001] The invention relates to a determination method in the field of chemistry, in particular to a method for simultaneously determining inorganic anions and organic acid radical ions in salt lake brine. Background technique [0002] my country's salt lakes are rich in brine resources, mainly distributed in Qinghai, Xinjiang, Tibet and Inner Mongolia. Salt lake brine resources in Qinghai Province are concentrated in the Qaidam Basin, which is also the region with the most abundant salt lake brine resources in China. Salt lake brine has high salinity, rich resources, and rich in various available elements. The main inorganic anions are F - , Cl - , NO 2 - 、Br - , NO 3 - , SO 4 2- and organic acid ion CH 3 COO - 、HCOO - and C 2 o 4 2- Wait. The rapid and accurate separation and determination of ions in salt lake brine provides a feasible basis and premise for the development and utilization of salt lake resources, and is of great significance ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/34
Inventor 黄梓平韩爱霞韦美静曹建芳陆园党君付华赵文琪
Owner QINGHAI UNIVERSITY
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