Method for detecting organic carbon in plants and soil and heating device thereof

A detection method, organic carbon technology, applied in the detection field, can solve problems such as potential safety hazards, uneven heating, difficult temperature control, etc., and achieve the effects of high work efficiency, uniform heating, and simplified procedures

Inactive Publication Date: 2014-08-06
中国林业科学研究院热带林业实验中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It overcomes the problems of serious safety hazards, uneven heating, and difficult temperature control in the current organic carbon detection method.

Method used

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  • Method for detecting organic carbon in plants and soil and heating device thereof
  • Method for detecting organic carbon in plants and soil and heating device thereof
  • Method for detecting organic carbon in plants and soil and heating device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The heating device used in the plant organic carbon detection method is composed of a constant temperature water bath 1, a cover 2, and a shelf 3. The constant temperature water bath 1 (the water bath is a double-row eight-hole electric heating constant temperature water bath (HWS-28 )) The water tank 4 is horizontally equipped with a compartment frame 3, and 10 openings are arranged on the compartment frame 3, and the position of the compartment frame 3 is adjusted to 1 / 2 of the height of the water tank 4, and the water level is controlled so that it is lower than the compartment frame 3. Shelves 3 heights. Install a curved neck funnel on the mouth of the triangular flask that has added each reaction substance, then cover the cover 2 on the water tank, the cover 2 is an iron square groove with a depth of 4 cm, and the top of the cover 2 is also provided with a handle 5. Press and place the edge of the notch of the iron square groove on the edge of the notch of the wate...

Embodiment 2

[0040] The heating device used in the plant organic carbon detection method is composed of a constant temperature water bath 1, a cover 2, and a shelf 3. The constant temperature water bath 1 (the water bath is a double-row eight-hole electric heating constant temperature water bath (HWS-28 )) A compartment frame 3 is horizontally installed in the water tank 4, and 15 openings are arranged on the compartment frame 3, and the position of the compartment frame 3 is adjusted to the height of the water tank 4 to seven-twelfths, and the water level is controlled so that it is lower than Compartment shelf 3 heights. Install a curved neck funnel on the mouth of the triangular flask that has added each reaction substance, then cover the cover 2 on the water tank 4, the cover 2 is an iron square groove with a depth of 5 cm, and the top of the cover 2 is also equipped with The handle 5 and the edge of the notch of the iron square groove are pressed on the edge of the notch of the water ...

Embodiment 3

[0043] The heating device used in the plant organic carbon detection method is composed of a constant temperature water bath 1, a cover 2, and a shelf 3. The constant temperature water bath 1 (the water bath is a double-row eight-hole electric heating constant temperature water bath (HWS-28 )) The water tank 4 is horizontally equipped with an interlayer frame 3, and 20 openings are arranged on the interlayer frame 3, and the position of the interlayer frame 3 is adjusted to two-thirds of the height of the water tank 4, and the water level is controlled so that it is lower than the interlayer frame 3. Shelves 3 heights. Install a curved neck funnel on the mouth of the triangular flask that has added each reaction substance, then cover the cover 2 on the water tank 4, the cover 2 is an iron square groove with a depth of 6 cm, and the top of the cover 2 is also equipped with The handle 5 and the edge of the notch of the iron square groove are pressed on the edge of the notch of t...

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Abstract

The invention relates to a detection method and in particular relates to a method for detecting organic carbon in plants and soil and a heating device of the method. The method for detecting organic carbon in plants and soil comprises the following steps: pretreating a plant sample or a soil sample, mixing the pretreated plant sample or the pretreated soil sample, potassium dichromate solution and concentrated sulfuric acid solution in a triangular flask, heating to carry out oxidizing reaction, adding distilled water after the reaction is ended, cooling and adding phenanthroline solution as an indicator, titrating the residual potassium dichromate in the oxidizing reaction by using ferrous sulfate solution, and calculating the content of organic carbon, wherein the oxidizing reaction refers to reaction under the condition of normal pressure steam generated by water at the temperature of 90-100 DEG C for 20-60 minutes. The normal pressure steam heating method is simple to operate and easy to control, the temperature in a water bath kettle is stable and easy to control, the sample is uniformly heated and fully digested, and the method is safe, environmentally friendly, high in detection reproducibility, accurate and efficient.

Description

technical field [0001] The invention relates to a detection method, in particular to a plant and soil organic carbon detection method and a heating device thereof. Background technique [0002] In the study of global carbon sinks, the organic carbon content of plants and forest soils is a key indicator for evaluating the carbon sequestration capacity of ecosystems. In the prior art, potassium dichromate oxidation-external heating method, boiling water bath method, electric heating plate heating method, graphite Stove digestion method and other methods for organic carbon detection. [0003] The potassium dichromate oxidation-external heating method described in the national standard GB7857-87 and the forestry industry standard LY / T1237-1999 uses a temperature-regulated electric furnace to heat the mixture of plant or soil samples, potassium dichromate solution, and sulfuric acid solution. Glycerin or Vegetable oil is the heating medium. Dip the digestion tube into an oil ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N31/16G01N1/44
Inventor 李朝英郑路卢立华
Owner 中国林业科学研究院热带林业实验中心
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