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Rapid determination method for bromine in oil-gas field water

A rapid measurement, oil and gas field technology, applied in the field of analysis and testing, can solve the problems of inaccurate measurement results, high cost, high test environment, etc., to achieve the effect of overcoming high cost and satisfying rapid measurement

Inactive Publication Date: 2012-12-12
WENGFU (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the cost of ion chromatography and inductively coupled plasma mass spectrometer is relatively high, and the test environment is high, and many laboratories cannot use these two methods for determination; iodometric method is easily affected by iodide ions in the solution during the determination process, resulting in Inaccurate results
At present, there is no standard method for the determination of bromine content by spectrophotometry in my country and internationally, and there are few introductions to spectrophotometry. It is necessary to develop relevant detection methods to meet the needs.

Method used

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  • Rapid determination method for bromine in oil-gas field water
  • Rapid determination method for bromine in oil-gas field water
  • Rapid determination method for bromine in oil-gas field water

Examples

Experimental program
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Effect test

Embodiment 1

[0015] The rapid determination method of bromine in oil and gas field water comprises the following steps:

[0016] (1) Draw bromine standard curve: draw bromine standard curve: refer to MT / T 893-2000 to prepare bromine standard solution 20μg / mL, measure 0, 1.0, 2.0, 4.0, 6.0, 8.0, 10.0ml bromine standard solution in 50ml In a volumetric flask, dilute to 20 mL with water, add 8 mL of acetic acid-sodium acetate buffer solution, 1.3 mL of phenol red solution and shake well, add 0.8 mL of chloramine T, shake well, and then oxidize for 40 seconds, immediately add 2.5 mL of sodium thiosulfate solution and mix Evenly, dilute with water to the scale, and mix well; after standing for 30 minutes, use a 1cm cuvette at a wavelength of 590nm, and use the standard series 0 as a reference to measure the absorbance value, take the mass of bromine as the abscissa, and the absorbance value as the ordinate Draw a standard curve;

[0017] (2) Measure 1.0mL of Sichuan Dazhou oil and gas field wa...

Embodiment 2

[0023] (1) using the standard curve drawn in Example 1;

[0024] (2) Measure 1.0 mL of Sichuan Dazhou oil and gas field water sample 2 into a 50 mL volumetric flask, 8 mL of acetic acid-sodium acetate buffer solution, 1.3 mL of phenol red solution, shake well, add 0.8 mL of chloramine T, shake well, and then oxidize for 40 seconds (accurate Timing), immediately add 2.5mL sodium thiosulfate solution and mix well, dilute with water to the mark, and mix well. After standing for 30 minutes, use a 1cm cuvette at a wavelength of 590nm to measure the absorbance value of 0.2168. Using the standard curve conversion, the bromine content is 57.5 μg, and the content is calculated according to the following formula:

[0025]

[0026] In the formula: m-the amount of bromine calculated by the standard curve, μg;

[0027] V - the volume of the sample to be taken, mL

[0028] .

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Abstract

The present invention discloses a rapid determination method for bromine in oil-gas field water, and relates to an analysis test method. The method comprises the following steps that: (1) a bromine standard curve is drawn; and (2) chloramine T is adopted to oxidize bromine ions in water into elemental bromine, and the bromine and phenol red form a purple tetrabromophenol red complex, wherein color intensity of the complex is deepened along with increase of the bromine concentration, such that a spectrophotometer is adopted to carry out colorimetric determination. According to the present invention, the spectrophotography is adopted to determine the bromine in the oil-gas field water, such that difficulties of high cost and high test environment requirements of application of ion chromatograph and inductively coupled plasma-mass spectrometer are overcome, and requirements of rapid determination of bromine in oil-gas field water are met.

Description

Technical field [0001] The present invention involves an analysis and test method, which specializes in the measurement method of bromine in oil and gas field water. technical background [0002] Bromine is a basic chemical raw material for making various bromo salts and organic bromide. Its unique physical and chemical characteristics make it an important basic chemical raw material in the development of the national economy. It has extensive and special purposes in the field of industrial and agriculture and military industry.At present, the measurement method of bromine mainly includes ion chromatography, inductor coupling plasma constitutional constitution and iodine quantity method.Among them, ion chromatics and inductance coupling plasma mass spectrometer costs higher and the test environment is high. Many laboratories cannot be determined by these two methods;The measurement results are inaccurate.At present, there is no standard method for the detection of bromine content...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31G01N1/28
Inventor 田言陈肖虎李文飞李武斌
Owner WENGFU (GRP) CO LTD
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