Establishing method for turbidity compensation model applied to total phosphorus measurement

A technology for establishing methods and turbidity, which is applied in measuring devices, color/spectral characteristic measurement, and material analysis through optical means, and can solve problems such as cumbersome operation and unstable measurement results

Inactive Publication Date: 2019-02-12
宁波万泽微测环境科技股份有限公司
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Problems solved by technology

However, this method is cumbersome to operate, requires additional preparation of solutions, and the measurement results are not stable enough, so it is not suitable for the online detection device of total phosphorus.

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  • Establishing method for turbidity compensation model applied to total phosphorus measurement
  • Establishing method for turbidity compensation model applied to total phosphorus measurement
  • Establishing method for turbidity compensation model applied to total phosphorus measurement

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Embodiment Construction

[0029] Below, the invention will be further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, on the premise of no conflict, the various embodiments described below or the technical features can be combined arbitrarily to form a new embodiment. .

[0030] The following description serves to disclose the present invention to enable those skilled in the art to carry out the present invention. The preferred embodiments described below are only examples, and those skilled in the art can devise other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present invention.

[0031] Those skilled in the art should understand that in the disclosure of the present invention, the terms "vertical", "transverse", "upper...

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Abstract

The invention discloses an establishing method for a turbidity compensation model applied to total phosphorus measurement. The establishing method for the turbidity compensation model applied to the total phosphorus measurement comprises the following steps that absorbance spectra of a finite number of n solutions with different turbidity are separately measured, and a wave length most impacted bythe turbidity is selected to be used as a compensating wave length; absorbance A<compensation> and absorbance A<700> of the finite number of n solutions with the different turbidity at the compensating wave length and the wave length of 700 nm are correspondingly measured and selected, the A<compensation> is used as a horizontal ordinate, the A<700> is used as a vertical ordinate, and the least square method is used for linear fitting to obtain a linear equation between the A<700> and the A<compensation>: A<700>=a<1>A<compensation>-b<1>; the absorbance after the compensation is obtained: A=A<700>-a<1>A<compensation>-b<1>; and the least square method is used for linear fitting, and a unitary linear relation of the absorbance A after the compensation and the total phosphorus concentration C: C=a<2>A+b<2> is established. According to the establishing method for the turbidity compensation model applied to the total phosphorus measurement, the error interference caused by the turbidity to the total phosphorus measurement can be effectively reduced, the accuracy and stability of total phosphorus content measurement are improved, and on-line correction of the turbidity is realized.

Description

technical field [0001] The invention relates to the technical field of water quality detection, and more specifically relates to a method for establishing a turbidity compensation model applied to the determination of total phosphorus. Background technique [0002] Total phosphorus is the total content of phosphorus in the water body, and it is one of the indicators that the water body is rich in organic matter. Excessive phosphorus content will cause excessive growth of algae plants, eutrophication of water bodies, algal blooms or red tides, and disrupt the balance of water bodies. Therefore, the national environmental protection department lists the total phosphorus content as one of the important monitoring indicators of water bodies. [0003] Molybdate spectrophotometry is a commonly used method for detecting total phosphorus in water quality. Its principle is: use potassium persulfate to digest the water sample, and oxidize all the phosphorus contained in the water sam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31
CPCG01N21/3151
Inventor 张鹏翔
Owner 宁波万泽微测环境科技股份有限公司
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