Method for detecting organic matter composition by ozone oxidation luminescent method
A technology of ozone oxidation and organic matter, applied in the direction of chemiluminescence/bioluminescence, and analysis by making materials undergo chemical reactions, can solve problems such as inadaptability to online monitoring, potential safety hazards, heavy secondary pollution, etc., and achieve complete and rapid Analysis, promotion of development, effects of a wide range of applications
Inactive Publication Date: 2012-11-21
OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
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[0005] It takes a long time to determine the composition of organic matter in the laboratory (>3 days / sample), there are potential safety hazards (high risk of concentrated sulfuric acid), and heavy secondary pollution (>20mL chloroform / sample, >10mL methanol / sample) is not suitable for Online Monitoring Requirements
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Embodiment 1
[0030] The present invention uses the ozone oxidation luminescence method to measure the composition of soil or sediment organic matter, and when the ozone oxidizes the soil or sediment, luminescence is generated. After processing, the light signal is converted into a voltage signal, and a signal is output by software to obtain the luminescence time t and the luminescence value V. Luminescence curve, the luminescence curve is a right-biased single peak, reaching the maximum value in a very short time, and then decaying like a power function. This curve expresses the ozone oxidation luminescence characteristics of soil or plants, and implies the information of organic matter composition, such as luminescence value-luminescence time power function index (b) and luminescence time (t).
[0031] see figure 1 , a method for detecting the organic matter composition of soil or plant samples by using the ozone oxidation luminescence method, the detection process is as follows figure 1...
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The invention provides a method for detecting organic matter composition by an ozone oxidation luminescent method. The method includes the steps of firstly, preparing ozone by an ozone generator, and removing nitrogen oxides; secondly, heating and grinding samples to be detected, and selecting samples to be sent into a reaction chamber; thirdly, fully performing reaction to ozone and the samples when reaction starts, and detecting a luminescent signal by a photomultiplier; fourthly, converting an optical signal into an electric signal, sending the electric signal into a data processing system of a computer, and analyzing a luminescent value-luminescent time power function and luminescent time; and fifthly, estimating lipid content according to the luminescent value-luminescent time power function per unit mass, and estimating contents of crude cellulose and crude lignin according to the luminescent time per unit mass. Organic matter composition of soil and plant samples can be measured quickly. Rge organic matter composition includes the lipid, the crude cellulose and the crude lignin. Complex chemical analysis is avoided, and environmental pollution and health hazards to human bodies possibly caused in chemical analysis are also avoided. The method is also suitable for measurement of other derivative chemical compositions.
Description
technical field [0001] The invention belongs to the technical field of environmental chemical monitoring, and in particular relates to a method for detecting organic matter composition by using an ozone oxidation luminescence method. Background technique [0002] Decomposition is one of the two most important ecological processes in the ecosystem. Without decomposition, the ecosystem will deplete the carbon in the atmosphere and rapidly accumulate a large amount of organic matter, which is rich in nutrients but cannot be used by plants. Therefore, the decomposition process is an important part of the healthy operation of the ecosystem, and the decomposition process is mainly controlled by the composition of organic matter. On the other hand, organic matter composition is closely related to soil quality, since the decomposition process determines the rate and total amount of nutrients supplied to the soil. If the organic matter of the soil or plant samples is mostly composed...
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Inventor 范萍萍侯广利吕婧高杨石小梅王茜尤小华褚东志任国兴汤永佐程岩马然刘东彦张颖王洪亮张颖颖曹煊曹璐张婷邹涛张述伟刘岩
Owner OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI