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Method and apparatus for measuring radioactive strength of plant and soil

A radioactive and plant-based technology, applied in soil testing, chemiluminescence/bioluminescence, and analysis through chemical reactions of materials, can solve the problems of release loss and limit the amount of soil samples, so as to improve the recovery rate and improve the determination Accuracy, effect of improving carbon recovery rate

Inactive Publication Date: 2006-05-10
INST OF SUBTROPICAL AGRI CHINESE ACAD OF SCI
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Problems solved by technology

But there are problems: First, how to recover CO to the greatest extent 2 , the organic carbon in the plant or soil sample is immediately oxidized to CO as soon as the dichromate and acid mixture is added 2 while release loss
In addition, this method limits the amount of soil sample used (less than 1.5 g dry sample), and is not suitable for the analysis and determination of soil samples with low C-14 content

Method used

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  • Method and apparatus for measuring radioactive strength of plant and soil

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Embodiment Construction

[0022] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0023] according to figure 1 As shown, the upper end of the plastic washing bottle 1 is connected to the upper end of the pear-shaped funnel 2 through a glass tube, the lower end of the pear-shaped funnel 2 is connected to a bottleneck of the double-necked flask 3, and the other end of the double-necked flask 3 is connected to the lower end of the improved Liebig condenser 4 To connect, insert a glass tube 8 with a switch to the bottom of the double-necked flask 3 through the lower end of the condenser 4 for oxygen ventilation. The lower part of the condenser 4 is provided with a water inlet 9 and the upper part is provided with a water outlet 10. The upper end of the condenser 4 passes The glass tube is connected with the buffer tube 5, and another glass tube is connected from the buffer tube 5 and inserted into the Kjeldahl tube 6, and a piece of soft foam plastic 7...

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Abstract

A method for determinating radioactive intensity of plant and soil includes adding oxidant in a closed system, heating and digesting sample of plant and soil, leading oxygen in to oxidate sample thoroughly, absorbing generated CO2 with sodium hydroxide after it being purified and using liquid scintillation counter to analyse C-14 radioactive intensity of absorption liquid.

Description

technical field [0001] The present invention relates to a method for measuring the radioactive intensity of C-14-labeled plants and soil, and also relates to a device for measuring the radioactive intensity of plants and soil. The method is suitable for scientific research, teaching, sanitation and environmental protection departments to measure the radioactive intensity of samples such as plants and soils labeled with C-14. Background technique [0002] C-14-labeled plants have been widely used indoors to study the kinetics of plant organic carbon decomposition and transformation in soil. At the same time, when plant C-14 is labeled, the amount of organic carbon secreted by plant roots to the soil can be studied. These parameters are It is indispensable to establish a computer simulation model of soil organic matter. The determination of C-14 radioactivity in plants and soil is the basis for the above research. Since the measurement of C-14 r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/76G01N33/24
Inventor 吴金水肖和艾李玲
Owner INST OF SUBTROPICAL AGRI CHINESE ACAD OF SCI
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