Detection method of ammonia content in coal ash

A detection method, fly ash technology, applied in the detection field, can solve problems such as poor applicability, and achieve the effect of wide application range, low requirements for equipment and maintenance, and accurate detection
CN109060693AInactive Publication Date: 2018-12-21TIANJIN BUILDING MATERIAL PROD QUALITY SUPERVISION & INSPECTION CENT +2
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
TIANJIN BUILDING MATERIAL PROD QUALITY SUPERVISION & INSPECTION CENT
Publication Date
2018-12-21
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention provides a detection method-distillation spectrophotometry of ammonia content in coal ash. The method comprises sample pretreatment, distillation absorbing treatment, indophenol blue spectrophotometry development measurement, ammonia concentration computation in a sample solution and the computation of ammonia content in the coal ash. Through the detection method provided by the invention, the influences of many coal ash insoluble matters and large impurity ion interference when the absorption photometry is used for detection are sufficiently considered; the distillation absorbing treatment is performed after adopting acid-soluble pretreatment, and the accuracy of the detection result is improved, so that the data has comparability and repeatability. The detection method provided by the invention has low requirements on sample environment, instrument equipment and maintenance, is large in applicable range, precise in detection and easy to implement; the detection method has good social benefit, environment and economic benefit after being promoted.
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Description

technical field

[0001] The invention relates to a detection method, in particular to a detection method of ammonia content in fly ash-distillation spectrophotometry. Background technique

[0002] In recent years, with the support of my country's solid waste resource utilization policy, the traditional technology of resource utilization of fly ash discharged from power plants as cement-based cementitious materials, fly ash masonry, and construction engineering filling has formed a large scale. It is widely used in the field of construction and building materials. Fly ash has become one of the indispensable materials for the preparation of building materials in the development of my country's construction projects. At present, laws and regulations such as the "Environmental Protection Tax Law" are conscientiously implemented. Solid waste fly ash will be levied an environmental protection discharge tax if it is not processed and discharged. The best choice for resource utilizati...

Claims

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