Method for measuring content of bromide ions in brine by gas chromatography

A technology of gas chromatography and salt brine, applied in the direction of measuring devices, material separation, instruments, etc., can solve the problems of low accuracy and sensitivity, harsh requirements, complicated operation, etc., and achieve low price, small impurity interference, and good selectivity Effect
CN103472169BInactive Publication Date: 2015-04-08GUIZHOU NORMAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GUIZHOU NORMAL UNIVERSITY
Publication Date
2015-04-08
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for measuring the content of bromide ions in brine by gas chromatography. The method comprises the following steps: a. preprocessing a sample, namely, adding an acidifying agent, a derivatizing agent and an oxidizing agent into the brine in sequence, and uniformly mixing for reaction; fully reacting and adding an extracting solvent for extracting; filtering supernatant liquid by anhydrous sodium sulfate for later use; b. measuring the content, namely measuring the content of the bromide ions in the brine processed in the step a by a gas chromatograph, wherein a detector in the gas chromatograph is a hydrogen flame ionization detector. According to the method, the operation is simple, quickness is achieved, the sensitivity is high, the cost is low, the selectivity is good, the impurity interference is slight, the detection result is accurate, and the repeatability, the recovery rate and the precision are good.
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Description

technical field

[0001] The invention relates to a method for determining the content of bromide ions in brine, in particular to a method for determining the content of bromide ions in brine by gas chromatography. Background technique

[0002] my country has a vast territory, with numerous salt lakes, abundant underground brine in oil and gas fields, and seawater resources known as the treasure house of minerals. These places and resources contain a variety of rare components, such as K + 、Br - , I - , B 3+ Wait. These components have extensive and important uses in the national economy, especially bromine, which has no independent ore in nature and can only be extracted from brine so far. Bromine is rare in the earth's crust but widely distributed (its Clark value is only (5-6)10 -4 %), is a volatile liquid and is a strong dispersing element. The places with relatively high concentration of bromine in nature are underground salt brine in oil and gas fields, salt lake ...

Claims

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