A method for rapid measurement of inorganic elements in tobacco leaves using near-infrared spectroscopy

A near-infrared spectroscopy and inorganic element technology is applied in the field of measuring the content of inorganic elements in tobacco leaves, which can solve the problems of large prediction errors and the like

Inactive Publication Date: 2016-08-17
山东烟草研究院有限公司
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Problems solved by technology

The conventional linear multivariate correction model cannot effectively solve this nonlinear problem, and the prediction error is much greater than the correction error. Therefore, it is necessary to establish a nonlinear correction model for the unique nonlinear characteristics of the analysis system.

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  • A method for rapid measurement of inorganic elements in tobacco leaves using near-infrared spectroscopy
  • A method for rapid measurement of inorganic elements in tobacco leaves using near-infrared spectroscopy
  • A method for rapid measurement of inorganic elements in tobacco leaves using near-infrared spectroscopy

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Embodiment Construction

[0038] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0039] In recent years, near-infrared spectroscopy has been more and more widely used in the tobacco industry, and it is very suitable for the rapid analysis of a large number of tobacco leaf samples. Since inorganic ions in tobacco can combine with organic groups with near-infrared absorption in a certain form, their content can be determined by means of near-infrared spectroscopy. The present invention utilizes near-infrared spectrum of tobacco leaves combined with nonlinear partial least squares method to establish a quantitative correction model of inorganic elements in tobacco leaves, thereby realizing rapid determination of the content of inorganic elements in tobacco samples, which is of great significance to the control of tobacco quality.

[0040] The specific measurement method for the content of inorganic elements in tobacco leaves ...

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Abstract

The invention discloses a method for quickly measuring inorganic elements in tobacco leaves by using near-infrared spectroscopy, which includes the process of establishing a nonlinear correction model and the process of measuring the inorganic elements in the tobacco leaf samples to be measured. The present invention introduces the nonlinear modeling technology into the establishment process of the correction model, adopts the partial least squares modeling method based on kernel transformation, eliminates the influence of the nonlinear relationship between the tobacco leaf spectrum and the content of inorganic elements, and satisfies the The demand for rapid determination of inorganic elements in a large number of tobacco samples enables rapid analysis and timely feedback on the quality of tobacco leaves.

Description

technical field [0001] The invention belongs to the technical field of parameter detection, and in particular relates to a method for measuring the content of inorganic elements in tobacco leaves. Background technique [0002] Tobacco is an important economic crop. The ash content of tobacco leaves is about 10%, and the ash content is mainly composed of inorganic elements. Tobacco plants need to absorb various inorganic nutrients during the growth process, so that the metabolism can proceed smoothly. After these inorganic substances are absorbed, they become the components of tobacco leaf cells. These inorganic elements in tobacco leaves are closely related to the growth and metabolism of tobacco leaves. Any abnormality (too high or too low) of any inorganic element will have varying degrees of impact on the shape, function, and yield and quality of tobacco leaves. An important factor affecting the quality of tobacco leaves. Among them, the inorganic elements with greater...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/3563G01N21/359
Inventor 王兴利许家来宋楠刘培江曲晓娜韩凤
Owner 山东烟草研究院有限公司
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