Preparation method of nano mercuric sulfide

A mercury sulfide, nanotechnology, applied in the field of mercury analysis of environmental samples, can solve the problems of uncontrollable, single product particle size, low purity, etc.

Inactive Publication Date: 2018-09-28
JIANGHAN UNIVERSITY
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Problems solved by technology

[0004] The invention provides a method for preparing nano-mercuric sulfide, which solves the technical problems of single particle size, uncontrollable and low purity of the product in the preparation method of nano-scale mercury sulfide in the prior art

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  • Preparation method of nano mercuric sulfide
  • Preparation method of nano mercuric sulfide
  • Preparation method of nano mercuric sulfide

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Embodiment Construction

[0025] The embodiment of the present application provides a preparation method of nano-mercury sulfide to solve the technical problems of single particle size, uncontrollable and low purity of the product in the preparation method of nano-scale mercury sulfide in the prior art.

[0026] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solutions of the present application. , rather than limiting the technical solutions of the present application, the embodiments of the present application and the technical features in the embodiments can be combined without conflict.

[0027] A preparation method of nano mercury sulfide, comprising:

[0028] According to the mass con...

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Abstract

The invention belongs to the technical field of environmental sample mercury analysis, and discloses a preparation method of nano mercuric sulfide. HgCl2 is added into an absolute ethyl alcohol solution according to the mass concentration ratio of 2%, and mechanical stirring is conducted at 200-500 rpm to obtain a first solution; sulphur powder and a n-pentane solution are added into the first solution, and mechanical stirring is conducted for even mixing to obtain a second solution, wherein the mass ratio of the sulphur powder to the HgCl2 is 3:10, and the volume ratio of the absolute ethyl alcohol solution to the n-pentane solution is 1:3; under the nitrogen atmosphere, the second solution is subjected to ultrasonic treatment according to the ultrasonic power of 245-450 W to obtain a third solution; under the conditions of maintaining the nitrogen atmosphere and ultrasonic treatment, a sodium hydroxide-ethanol solution with the mass concentration of 0.6% is added into the third solution according to the rate of 1.7 mL / min to obtain a fourth solution; the fourth solution is subjected to centrifugal treatment, a centrifugal product is rinsed by means of absolute ethyl alcohol and n-pentane in sequence, and then drying is conducted under the nitrogen atmosphere to obtain the nanoscale mercuric sulfide product.

Description

technical field [0001] The invention relates to the technical field of mercury analysis of environmental samples, in particular to a preparation method of nano mercury sulfide. Background technique [0002] As a basic environmental chemical process, the precipitation and dissolution of mercury sulfide (HgS) plays a key role in the speciation distribution, migration, reactivity and corresponding migration and transformation (including methylation / demethylation) of mercury in environmental media. , is also a key process to control mercury toxicity. Therefore, studying the environmental behavior of mercury sulfide is an important way to solve mercury pollution. Since the particle size of mercury sulfide in the environment is mostly on the submicron scale, it is necessary to use submicron mercury sulfide to simulate the reaction and form changes of mercury sulfide in the real environment, but currently only granular mercury sulfide is available on the market, which cannot be us...

Claims

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Application Information

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IPC IPC(8): C01G13/00B82Y40/00
CPCB82Y40/00C01G13/00C01P2002/72C01P2004/03
Inventor 刁星曹梦西孙玉贞王慧敏汪琳琳梁勇
Owner JIANGHAN UNIVERSITY
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