Method for testing impact of stirring time on removal rate of heavy metal chelating agent
A heavy metal chelating agent, stirring time technology, used in color/spectral property measurement, absorption/scintillation/reflection spectrum, spectrum investigation, etc. Simple steps, reduced measurement costs, 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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[0034] A kind of method that the present invention relates to measuring stirring time influences on the removal rate of heavy metal chelating agent comprises the following steps:
[0035] (a) preparing a heavy metal chelating agent for use;
[0036] (b) prepare copper ion solution;
[0037] (c) adding heavy metal chelating agent solution in copper ion solution;
[0038] (d) After stirring for different time at room temperature, take out the supernatant liquid and measure its absorbance;
[0039] (e) Calculate the chelated Cu 2+ amount.
[0040] (f) through Cu 2+ The amount of stirring time to get the effect of heavy metal chelating agent removal rate.
[0041] In the step (b), the pH of the prepared copper ion solution is 5.8.
[0042] In the step (b), the volume of the prepared copper ion solution is 100ml.
[0043] In the step (b), the prepared copper ion solution has a concentration of 50 mg / L.
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Abstract
The invention discloses a method for testing the impact of stirring time on the removal rate of heavy metal chelating agent, which comprises the following steps that: the heavy metal chelating agent is prepared for further use; copper ion solution is prepared; the heavy metal chelating agent solution is added in; supernatant is respectively taken out after the mixture is stirred for different time, and the absorbency of the supernatant is tested; the amount of the chelated Cu2+ is worked out; and the impact on the removable rate is obtained according to the amount of the Cu2+. According to the method for testing the impact of stirring time on the removal rate of heavy metal chelating agent, the impact of the stirring time on the removal rate of the heavy metal chelating agent can be quickly tested, the test precision is high, the test steps are simple, the test cost is reduced, and data bases are provided for the use of the heavy metal chelating agent.
Description
technical field [0001] The invention relates to a method for measuring the influence of stirring time on the removal rate of a heavy metal chelating agent. 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 has become...
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IPC IPC(8): G01N21/31G01J3/42
Inventor 袁俊海
Owner 袁俊海