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Zinc selenite sol as well as preparation method and application thereof

A technology of zinc selenite and sol, applied in the field of fertilizers, can solve the problems of insufficiency, large particles of zinc selenite powder, and difficulty in crop absorption, etc., and achieves the effects of improving action efficiency, good insulation and strong adsorption force.

Pending Publication Date: 2022-05-06
IRONMAN ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the zinc selenite powder prepared by these existing methods has relatively large particles, which is not easily absorbed by crops, and it is difficult to meet the requirements of crops to absorb trace elements zinc and selenium

Method used

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  • Zinc selenite sol as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The preparation of a zinc selenite sol is carried out as follows: 1) Measure 20ml of water, add 1g of selenium powder, then add 5g of basic zinc carbonate to the reaction system, add sodium citrate after the basic zinc carbonate dissolves to adjust When the pH value of the reaction system reaches about 8, stir it to fully react for 1 hour. After sufficient reaction, filter and wash the obtained precipitate three to four times to obtain aqueous zinc selenite precipitate.

[0030] 2) Add water-containing zinc selenite precipitate and 80ml of water to beat and stir to obtain a mixed solution. After the mixed solution is stirred, insert the ultrasonic in-line processor into the mixed solution. The distance between the transmitting end of the ultrasonic in-line processor and the bottom of the container is About 7mm, the diameter of the end face of the transmitting end is 10~20mm, the intensity of the ultrasonic wave is adjusted at about 900 watts, the interval time of the ul...

Embodiment 2

[0034] The preparation of a zinc selenite sol is carried out as follows: 1) Measure 20ml of water, add 2g of selenium powder, then add 7g of basic zinc carbonate to the reaction system, add sodium citrate after the basic zinc carbonate dissolves to adjust When the pH value of the reaction system reaches about 8, stir it to fully react for 1 hour. After sufficient reaction, filter and wash the obtained precipitate three to four times to obtain aqueous zinc selenite precipitate.

[0035]2) Add the hydrated zinc selenite precipitate and 80ml of water to beat and stir. After the mixture is stirred, insert the ultrasonic in-line processor into the mixture. The distance between the transmitting end of the ultrasonic in-line processor and the bottom of the container is about 7 mm. , the diameter of the end face of the transmitting end is 10-20 mm, the intensity of the ultrasonic wave is adjusted at about 900 watts, the interval time of the ultrasonic wave is 1-10 seconds, the opening...

Embodiment 3

[0041] The preparation of a zinc selenite sol is carried out as follows: 1) Measure 20ml of water, add 1g of selenium dioxide, then add 6g of basic zinc carbonate to the reaction system, add sodium citrate after the basic zinc carbonate dissolves Adjust the pH value of the reaction system to about 8, stir to make it fully react for 1h. After sufficient reaction, filter and wash the obtained precipitate three to four times to obtain aqueous zinc selenite precipitate.

[0042] 2) Add zinc selenite precipitate and 80ml of water to beating and stir. After the mixture is stirred, insert the ultrasonic in-line processor into the mixture. The distance between the transmitting end of the ultrasonic in-line processor and the bottom of the container is about 7mm. The diameter of the end face of the end is 10-20 mm, the intensity of the ultrasonic wave is adjusted at about 900 watts, the interval time of the ultrasonic wave is 1-10 seconds, the opening time of the ultrasonic wave is abou...

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Abstract

The invention relates to the technical field of fertilizers, and discloses zinc selenite sol as well as a preparation method and application thereof, and the zinc selenite sol is used for reducing the cadmium content in plants and increasing the selenium content. Chitosan is added into the sol, so that the action efficiency is improved, and the action time is prolonged; the zinc element is added, so that the growth of crops is ensured while heavy metals such as cadmium are inhibited. The zinc selenite sol is prepared by the following specific steps: 1) reacting selenium element with zinc salt to obtain a precipitate; 2) adding water into the precipitate, pulping and stirring, and carrying out ultrasonic treatment; 3) stirring, heating and reacting the collected liquid through hydrogen-type weakly acidic cation exchange resin, standing, cooling, and aging to obtain a zinc selenite sol precursor; 4) adding the zinc selenite sol precursor into a mixture of hydrogen peroxide and ethanol, and reacting to obtain a zinc selenite sol precursor, and 5) adding chitosan into the zinc selenite sol precursor, and rapidly stirring until the chitosan is dissolved to obtain the zinc selenite sol.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a zinc selenite sol and a preparation method and application thereof. Background technique [0002] Soil heavy metal pollution is one of the most important and serious soil pollution problems. It is economical and safe to reduce the absorption of heavy metals by improving the plant's own resistance to heavy metals. And by increasing the selenium nutrition of rice to improve the resistance of rice to heavy metals, it can not only reduce the absorption and accumulation of heavy metals in rice, but also increase the content of selenium in rice. Many crops such as rice and wheat are vulnerable to drought, low temperature, disease infection and other adversity damage. Many researches have found that one of the common mechanisms of adversity damage is the increase of free radical generation, and selenium is known as the free radical. The "scavenger" of radical garbage is a direct ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/00C05D9/02C05G5/18B01J13/00A01N59/02A01P21/00B82Y40/00B82Y30/00
CPCC01G9/00C01G9/003B01J13/0013B01J13/003B01J13/0039A01N59/02C05D9/02C05G5/18B82Y40/00B82Y30/00C01P2004/64
Inventor 石虎砚黄志钢张钊杨婷田冬波黄石光杨启豪
Owner IRONMAN ENVIRONMENTAL TECH CO LTD
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