Method for measuring influence of heavy metal chelant on removal rate of metal mixed solutions
A heavy metal chelating agent and mixed solution technology, which is applied in the preparation of test samples, color/spectral characteristic measurement, etc., can solve the problems of narrow molecular weight distribution, restricted molecular chain growth, and low molecular weight of products, and achieves simple measurement steps and reduced The effect of high measurement cost and high measurement accuracy
Inactive Publication Date: 2012-05-23
袁俊海
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Because the organic solvent used in the precipitation polymerization process is a very active chain transfer agent for the polymerization of acrylamide, and most organic solvents are precipitation agents for polyacrylamide. When the molecular chain of the polymer grows to a certain length, it will It will precipitate and limit the further growth of the molecular chain, so the molecular weight of the obtained product is low and the molecular weight distribution is narrow
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[0033] A kind of method that the present invention relates to measuring the influence of heavy metal chelating agent on metal mixed solution removal rate comprises the following steps:
[0034] (a) preparing a heavy metal chelating agent for use;
[0035] (b) preparing metal mixed solutions of different metal ion ratios respectively;
[0036] (c) adding the heavy metal chelating agent solution to the prepared mixed metal solution;
[0037] (d) after stirring at room temperature, take out the supernatant and measure its absorbance;
[0038] (e) The amount of chelated metal ions is determined.
[0039] (f) Obtain the influence of heavy metal chelating agent on the removal rate of metal mixed solution by the amount of chelated metal ions.
[0040] In the step (b), the mixed metal solution contains copper ions and lead ions.
[0041] In the step (b), the volume of the prepared mixed metal solution is 100ml.
[0042] In the step (b), the concentration of the prepared mixed met...
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Abstract
The invention discloses a method for measuring the influence of a heavy metal chelant on the removal rate of metal mixed solutions. The method comprises the steps of: preparing the heavy metal chelant for later use; respectively preparing metal mixed solutions with different metal ion ratios; respectively adding a heavy metal chelant solution into the prepared metal mixed solutions; taking out the supernatant liquors respectively to measure the absorbance after agitation; solving the quantity of chelate metal ions; and obtaining the influence on the removal rate according to the quantity of the chelate metal ions. The method disclosed by the invention can be used for rapidly measuring the influence of the heavy metal chelant on the removal rate of the metal mixed solutions, has high measurement precision and simple measurement steps, is beneficial to reduction of the measurement cost and provides a good data base for use of the heavy metal chelant.
Description
technical field [0001] The invention relates to a method for measuring the influence of a heavy metal chelating agent on the removal rate of a metal mixed solution. Background technique [0002] Facing the current situation of my country's environmental protection and the pressure brought by the international green fortress, it is very urgent to carry out the development and research of oilfield environmental protection technology in my country and solve the major environmental protection problems that plague my country's social and economic development. [0003] In the process of oil and gas exploration and development, oil and gas companies have adopted a large number of measures such as drilling and other oil and gas wells to put into production and increase production, resulting in a large amount of drilling sewage. During drilling, each well produces 400-500m of drilling sewage 3 , waste drilling fluid 500~700m 3 . At present, solving the pollution problem of sewage h...
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IPC IPC(8): G01N21/31G01N1/28
Inventor 袁俊海
Owner 袁俊海