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Method for detecting passivation effect of heavy metals of organic compost

A technology of organic composting and detection method, which is applied in measurement devices, preparation of test samples, material analysis by electromagnetic means, etc., can solve the problems of long detection period, cumbersome and complicated detection steps, etc. The effect of less detection time and less operation steps

Inactive Publication Date: 2019-06-07
BEIJING GOLDENWAY BIO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] For this reason, the embodiment of the present invention provides a detection method for the passivation effect of heavy metals in organic compost to solve the problems of cumbersome and complicated detection steps and long detection period in existing detection methods

Method used

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  • Method for detecting passivation effect of heavy metals of organic compost
  • Method for detecting passivation effect of heavy metals of organic compost
  • Method for detecting passivation effect of heavy metals of organic compost

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1 test material

[0028] Pig manure: from a pig farm in Quzhou.

[0029] Mushroom dregs: An edible fungus production factory in Quzhou.

[0030] Biological humic acid: purchased from Beijing Jiabowen Biotechnology Co., Ltd.

[0031] 2 test method

[0032] In the test, pig manure and mushroom slag were used as raw materials, 5% of the total mass of raw materials was added with biological humic acid as a passivator, and the C / N of the material was adjusted to 25:1, and then the water was adjusted to a maximum water holding capacity of 60-65% of the compost material. It should be piled up for aerobic high-temperature composting fermentation at a room temperature of 25°C for 40 days.

[0033] The fermented raw materials and fermented products are tested for the soluble content of heavy metals in weak acids in the samples according to the following steps:

[0034] Sample pretreatment: Pour the fully dried sample onto a wooden tray with a steel glass bottom, grind it fine...

Embodiment 2

[0047] 1 test material

[0048] Pig manure: from a pig farm in Quzhou.

[0049] Mushroom dregs: An edible fungus production factory in Quzhou.

[0050] Biological humic acid: purchased from Beijing Jiabowen Biotechnology Co., Ltd.

[0051] 2 test method

[0052] In the test, pig manure and mushroom slag were used as raw materials, and 10% of the total mass of raw materials was added with biological humic acid as a passivator. The C / N of the material was adjusted to 25:1, and then the water was adjusted. It is suitable, and then piled up for aerobic high-temperature composting fermentation, and stacked for 40 days at a room temperature of 25°C.

[0053] The fermented raw materials and fermented products are tested for the soluble content of heavy metals in weak acids in the samples according to the following steps:

[0054] Sample pretreatment: Pour the fully dried sample onto a wooden tray with a steel glass bottom, grind it finely with a wooden stick, and make it pass thr...

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Abstract

The embodiments of the invention disclose a method for detecting the passivation effect of heavy metals of organic compost and belong to the technical field of bioavailability detection. According tothe contents of weak acid soluble heavy metals in the organic matters of the compost before and after fermentation are tested respectively; the passivation effect of the heavy metals of the organic compost is the ratio of the total content of the weak acid soluble heavy metals in the organic matters of the compost after fermentation to the total content of the weak acid soluble heavy metals in theorganic matters of the compost before fermentation; and the smaller the ratio is, the better the passivation effect is. The method of the invention has the advantages of high accuracy, reproducibility, few operation steps and great popularization significance. With the method adopted, detection can be completed on the same day, and therefore, detection time can be shortened, and workload can be reduced; a large quantity of experimental reagents can be saved; pollution caused by reagents and heavy metals can be reduced; and the working efficiency of the detection of the heavy metals of the organic fertilizer can be greatly improved.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of bioavailability detection, and in particular to a method for detecting the passivation effect of heavy metals in organic compost. Background technique [0002] Organic compost generally uses agricultural organic waste, such as livestock and poultry manure, as raw material, and obtains fertilizer rich in humic acid substances through a special microbial fermentation process. Studies have shown that the application of organic compost can not only provide comprehensive nutrition for crops, but also has a long fertilizer effect, which can increase and renew soil organic matter, promote microbial reproduction, improve soil physical and chemical properties and biological activity in soil, and is the main source of nutrients for green food production. [0003] With the development of large-scale and intensive animal husbandry, additives containing heavy metal elements Cu, Zn, As, Cd, Cr...

Claims

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Application Information

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IPC IPC(8): G01N27/62G01N1/28
Inventor 张荣春
Owner BEIJING GOLDENWAY BIO TECH