A method for measuring copper content in copper-containing masterbatch for copper root removing dripper
A technology of copper content and masterbatch, which is applied in the field of measuring copper content in copper-containing masterbatch for copper root removal drippers, can solve the problems that there are no clear literature reports on the detection method, and achieve a simple and easy method with low cost Effect
Active Publication Date: 2017-11-03
大禹节水(天津)有限公司
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Therefore, the establishment of a low-cost, simple and easy-to-use detection method for copper content in copper-containing masterbatches suitable for enterprises will help enterprises to carry out production process and quality control of finished products, but there is no clear literature on relevant detection methods so far. to report
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[0020] The solution of the present invention will be further described below in conjunction with specific examples. The copper content in a certain batch of copper-containing masterbatches is measured, and 5 groups are measured in parallel, which are recorded as parallel groups 1-5.
[0021] The dripper formula is composed of high-density polyethylene, copper powder and a small amount of inorganic substances.
[0022] Parallel group 1:
[0023] ①Weigh a certain mass of copper-containing masterbatch with an analytical balance to obtain the mass m 0 = 1.112 grams;
[0024] ②Take a quartz conical flask with a capacity of 100ml, first add 30ml of distilled water to the flask, then add 30ml of tetrahydronaphthalene to the flask and pass in nitrogen for protection, place the flask on a heat-collecting constant temperature magnetic stirrer, oil After the bath is heated to 135°C, the temperature is kept constant and the copper-containing masterbatch is placed in it, and the heating ...
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The invention provides a method for measuring the copper content in the copper-containing masterbatch used for copper root-removing drippers, using a dissolution-precipitation separation method, using distilled water and decahydronaphthalene and / or tetrahydronaphthalene as a solvent, and dissolving the masterbatch under heating conditions , the solution is layered, where distilled water is below, tetralin and / or decahydronaphthalene are above, polyethylene contained in the masterbatch stays in the upper layer, and copper with a higher density and a small amount of insoluble inorganic matter fall in the lower layer of distilled water or a flask At the bottom, the copper content can be obtained through the formula. This method can correctly determine the copper content in the copper-containing masterbatch, and the method is simple, easy to implement, and low in cost, and can be used for production process technology and product quality control.
Description
technical field [0001] The invention belongs to the field of metal content determination, and in particular relates to a method for measuring copper content in a copper-containing masterbatch for copper-root-removing drippers. Background technique [0002] Copper is a metal chemical element and a trace element necessary for the human body. Copper is also one of the earliest metals discovered by humans. It is a metal widely used by humans and belongs to heavy metals. Studies have shown that heavy metal copper is not only an indispensable element for crop growth, but also can interact with organic acids secreted by plants to produce divalent copper ions. In particular, root growth produces stress-inhibitory effects. [0003] Underground drip irrigation is one of the most water-saving irrigation technologies in the world. It has many advantages and has become one of the typical forms of micro-irrigation technology applications. It is a new generation of drip irrigation product...
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IPC IPC(8): G01N5/04
Inventor 保功辉张学双李娇寇潇雨
Owner 大禹节水(天津)有限公司