Establishment of chemical composition content model in plant fiber material and content determining method

A plant fiber material and chemical composition technology, applied in the field of chemical composition content determination, can solve the problems of complex sampling process, long modeling period, poor model reliability, etc., so as to improve the modeling speed, improve the accuracy, and reduce the amount of field collection. Effect

Inactive Publication Date: 2007-01-03
INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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  • Abstract
  • Description
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Problems solved by technology

[0011] The purpose of the present invention is to overcome the shortcomings of complex sampling process, long modeling period or poor reliability of the built model in the prior art in the establishment method of the plant fiber material chemical composition content model and the determination method of t

Method used

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  • Establishment of chemical composition content model in plant fiber material and content determining method
  • Establishment of chemical composition content model in plant fiber material and content determining method
  • Establishment of chemical composition content model in plant fiber material and content determining method

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Effect test

Embodiment 1

[0052] This example is used to illustrate the establishment method and content determination method of the chemical component content model in the plant fiber material provided by the present invention.

[0053] Sample: Moso bamboo, collected from Xiaoshan District, Hangzhou City, Zhejiang Province, located between 120°04′-120°43′E and 29°50′-30°23′N; Between 500-600 meters, red loam, bamboo and fir mixed forest; belongs to subtropical monsoon climate. Take 3 plants of 2-year-old, 4-year-old and 6-year-old moso bamboo respectively, and take two bamboo sections of 0.5-2.5 meters high and 4.5-6.5 meters high for each plant, and divide each bamboo section into bamboo green, bamboo flesh and bamboo yellow after air drying The three parts were cut into thin slices, pulverized, sieved, and 40-60 mesh bamboo powder was taken to obtain 54 samples in total.

[0054] Instrument: LabSpec(R) Pro near-infrared spectrometer produced by American ASD Company, detector: 350-2500 nanometers, l...

Embodiment 2

[0071] This example is used to illustrate the establishment method and content determination method of the chemical composition content model provided by the present invention.

[0072] Establish model and carry out content determination according to the method identical with embodiment 1, and used sample is exactly the same, and difference is to measure the content value of acid-insoluble lignin and cellulose in the moso bamboo powder simultaneously, the cellulose content in the sample The true value is analyzed and determined according to GB / T 2677.8-1994. The model of acid-insoluble lignin content is the same as embodiment 1; The model correlation coefficient of comprehensive cellulose content is 0.975, and the calibration standard error is 0.337, and the prediction standard error is 0.552, and the comparison result of the predicted value of comprehensive cellulose content and measured value is as follows figure 2 shown.

Embodiment 3

[0074] This example is used to illustrate the establishment method and content determination method of the chemical composition content model provided by the present invention.

[0075] Sample: The plantation fir test material was collected from Huangshan Forest Farm in Anhui Province, which is located at 117°58’-119°40’ east longitude and 29°57’-31°19’ north latitude. Take 3 plants at low altitude (300 meters) and high altitude (800 meters) respectively. Each plant starts from the chest height, and cuts a 6 cm disc every 2 meters, a total of 4 sections. After air drying, the sapwood is separated. Split into small flakes, crushed, sieved, and finally select 40-60 mesh fir powder to obtain a total of 48 samples.

[0076] Instrument: LabSpec(R) Pro near-infrared spectrometer produced by American ASD Company, detector: 350-2500 nanometers, low-noise 512-element PDA; spectral sampling interval: 1.4 nanometers @ 350-1050 nanometers; 2 nanometers @ 1000-2500 nanometers; spectrum Re...

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Abstract

A former foundation method of chemistry component content to plant fibrin material gathers close infrared spectroscopic to plant fibrin material sample and sets up quantitative analysis former according the chemistry component content to the plant fibrin material sample based on the close infrared spectroscopic by adopting chemistry metrology method. A part of the said plant fibrin material sample is at least mixed plant fibrin material sample. The said mixed plant fibrin material sample is at least one of the mixtures of plant fibrin material sample with known chemistry component content. According the former establishing method

Description

technical field [0001] The invention relates to a method for establishing a model of the content of chemical components in plant fiber materials and a method for measuring the content of chemical components using the model. Background technique [0002] With the improvement of environmental protection requirements, natural plant material products are more and more popular. The composition and content of natural plant materials are also varied due to different types. Even in different parts of the same plant, the chemical composition and the content of the same chemical composition are also quite different. The difference in the content of chemical components often affects the performance of plant materials, thereby affecting the use of materials. For example, lignin is one of the three main chemical components of plant fiber materials. In the pulp and paper industry, the content of lignin in raw materials is an important basis for formulating cooking and bleaching process c...

Claims

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Application Information

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IPC IPC(8): G01N21/27G01N21/47G01N21/31
Inventor 江泽慧李改云
Owner INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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