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The detection method of phthalohydrazide

A technology of phthalic hydrazide and detection method is applied in the directions of measuring devices, instruments, scientific instruments, etc., to achieve the effects of increasing income, reducing pollution, and achieving significant social benefits

Active Publication Date: 2016-03-02
JING JING PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But, so far, there is no method for detecting the content of phthalic hydrazide in the prior art

Method used

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Experimental program
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Embodiment Construction

[0016] The present invention will be described in further detail below in combination with specific embodiments.

[0017] A kind of detection method of phthalic hydrazide, its steps are as follows:

[0018] 1) Purification of phthalic hydrazide: take about 30g of phthalic hydrazide solid and put it in a beaker, wash it three times, soak it with 50ml of pure water and stir for 10 minutes each time, and remove the floating substance in the upper layer at the same time; then use a sand core The funnel was suction-filtered, and then the filter residue was washed with 50ml of purified water for 10 minutes, and the filter residue was dried at 70°C for 4 hours, and the weight loss of phthalic hydrazide was found to be 0.02%;

[0019] 2) Preparation of standard solution: Weigh 75 mg of the purified phthalic hydrazide solid into a 50 ml volumetric flask, add 5 drops of hydrazine hydrate until it is completely dissolved, and then dilute the solution with a mobile phase; dilute the solut...

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Abstract

The invention discloses a phthalylhydrazine detection method and belongs to the technical field of phthalylhydrazine detection. The phthalylhydrazine detection method adopts a high performance liquid chromatography for detection and comprises the steps of preparation of a standard solution, preparation of a solution to be detected, detection, computation and the like. The phthalylhydrazine detection method can be used for detecting phthalylhydrazine in chemical waste liquids, and can be used for solving the problem that an open phthalylhydrazine detection method is unavailable in the prior art. Through the application of the method, the phthalylhydrazine in the chemical waste liquids can be recovered in a targeted manner, so that the positive results of improving the gain, reducing the pollution and changing the waste into valuable are obtained, and remarkable social benefits are achieved.

Description

technical field [0001] The invention relates to the technical field of phthalhydrazide detection. Background technique [0002] Phthalohydrazide is a by-product of chemical production. In the past, the by-product was usually discarded as waste, which not only caused environmental pollution, but also caused waste of resources. In order to be able to utilize phthalohydrazide in waste, it is necessary to detect its content, so as to judge the cost of recycling and formulate corresponding recycling plans. However, so far, there is no method for detecting the content of phthalohydrazide in the prior art. Contents of the invention [0003] The technical problem to be solved in the present invention is to provide a kind of detection method of phthalic hydrazide in view of the deficiency of above-mentioned prior art, this method uses high performance liquid chromatography to detect the content of phthalic hydrazide, can be applied to The detection of chemical waste, and provide ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/02
Inventor 李斌水何连顺王阳
Owner JING JING PHARMA