Soil heavy mental passivator and application thereof

A heavy metal passivation agent and soil technology, applied in the direction of soil conditioning materials, applications, chemical instruments and methods, etc., can solve the problems of overall fertility decline, passivation effect is not long-lasting, crop production reduction, etc., to reduce absorption and low cost , reducing the effect of enrichment

A heavy metal passivation agent and soil technology, applied in the direction of soil conditioning materials, applications, chemical instruments and methods, etc., can solve the problems of overall fertility decline, passivation effect is not long-lasting, crop production reduction, etc., to reduce absorption and low cost , reducing the effect of enrichment

CN104560047AActive Publication Date: 2015-04-29CHENGDU NEWSUN CROPSCI
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  • Soil heavy mental passivator and application thereof
  • Soil heavy mental passivator and application thereof
  • Soil heavy mental passivator and application thereof

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Effect test

preparation example Construction

[0022] The preparation method of the soil heavy metal passivator of the present invention is conventional mixing in the field, and the above-mentioned raw materials are uniformly mixed in proportion.

[0023] The invention also provides the application of the soil heavy metal passivator of the invention in repairing mercury-polluted soil.

[0024] The soil heavy metal passivator of the present invention is rich in functional groups such as mercapto, amino, and carboxyl that can complex with heavy metals. These functional groups can chelate and complex with heavy metal ions in the soil, thereby reducing The activity of heavy metals is particularly effective on mercury. Adding the soil heavy metal passivator of the present invention according to 0.5-1% of the soil mass on the soil slightly polluted by heavy metal mercury can effectively reduce the effectiveness of heavy metal mercury in the soil, and reduce the absorption and enrichment of mercury by crops.

Embodiment 1

[0027] Accurately weigh 30kg of humic acid, 10kg of trimercapto-s-triazine, 35kg of rapeseed meal, 20kg of calcium phosphate, and 5kg of chitosan, and mix well to obtain the soil heavy metal passivator.

Embodiment 2

[0029] Accurately weigh 20kg of humic acid, 50kg of mercaptocellulose, 25kg of calcium phosphate, and 3kg of chitosan, and mix well to obtain the soil heavy metal passivator.

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Abstract

The invention relates to a soil heavy mental passivator and application thereof, and belongs to the technical field of a soil conditioner. The invention aims at solving a technical problem of providing a soil heavy mental passivator. The soil heavy mental passivator consists of the following components in parts by weight: 20-35 parts of humic acid, 30-50 parts of a sulfhydryl compound, 10-30 parts of calcium phosphate and 3-10 parts of chitosan. The soil heavy mental passivator disclosed by the invention can be used for effectively reducing the effectiveness of heavy metal mercury in soil, and relieving the absorption and enrichment of the mercury in crops; the physical properties and the fertility level of the soil are not damaged, and a certain production increasing effect is achieved; and the soil heavy mental passivator is simple in preparation method and low in cost; in addition, the soil heavy mental passivator disclosed by the invention has a certain repair effect on other heavy metals, and is conducive to the reduction of enrichment of other heavy metals in plant bodies.

Description

technical field [0001] The invention relates to a soil heavy metal passivator and its application, and belongs to the technical field of soil improvers. Background technique [0002] Environmental heavy metal pollution is a major environmental problem at home and abroad. Among heavy metals, mercury, cadmium, lead, arsenic, and chromium are the most harmful to human health and are often called "five poisonous elements". Heavy metals enter the soil environment through different channels. Most of the heavy metals in the soil remain in the soil in various forms through complex physical and chemical reactions. At the same time, heavy metals accumulate in the edible parts of crops and enter the food chain cycle, thus posing a threat to human health. . In addition, because the vast majority of heavy metals do not undergo microbial or chemical degradation in the soil environment, heavy metals entering the soil can continue to accumulate and eventually cause pollution hazards. Bec...

Claims

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Application Information

Patent Timeline
29 Apr 2015
Publication
CN104560047A
IPC
C09K17/40; C09K101/00
CPC
C09K17/40; C09K2101/00
Inventors
何其明; 詹绍军