Method and device for on-line detecting concentration of pesticide
A concentration and pesticide technology, which is applied in the field of pesticide detection and online detection of pesticide concentration, can solve the problem that the pipeline pesticide concentration value cannot be given in real time, and achieve the effect of real-time detection of pesticide concentration, simple structure and convenient operation
Active Publication Date: 2014-05-28
JIANGSU UNIV
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[0004] In order to overcome the defects that the current pesticide concentration detection needs to be sampled first and then detected, and the pesticide concentration value in the pipeline cannot be given in real time, the present invention provides a method and device that can realize online detection of pesticide concentration
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[0024] The device and method for on-line detection of pesticide concentration of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0025] figure 1 Among them, the detection device for online monitoring of pesticide concentration includes a light source 1, a monochromator 2, an optical element 3, an opaque detection tube housing 4, a cover plug 5, a detection cell 6, a photomultiplier tube detector 7, a data acquisition system 8, Computer 9 and detection cell housing 10 . The optical element 3 is made up of two confocal convex lenses, the two convex lenses are placed in parallel and the distance between the convex lenses is twice the focal length of the convex lenses, its purpose is to make the monochromatic light in the monochromator 2 pass through the detection pool 6 in parallel; the detection pool 6 is the inner cavity of the detection cell housing 10, the two ends of the detection cell housing 10 are cylindric...
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The invention discloses a method and device for on-line detecting concentration of pesticide. The method comprises the following steps: determining an optimal wavelength of collimated monochromatic light, determining an optimal incident light intensity of the collimated monochromatic light, making a T-C standard curve graph containing the relationship between transmissivity T and the concentration C of the pesticide, and on-line obtaining a concentration value of the pesticide in a detection pool. The device comprises a collimated monochromatic light source, a non-transparent detection pipe shell, a capping plug, the detection pool, a photomultiplier detector, a data acquisition system, a computer and a detection pool shell. The photomultiplier detector is connected onto the detection pipe shell to receive monochromatic light emitted by the collimated monochromatic light source and convert a light signal into an electric signal; the data acquisition system is used for converting the electric signal on the photomultiplier detector into a digital signal and transmitting the digital signal to the computer; and the computer has the functions of data storage, data process and data inquiry, and is used for displaying a transmission light intensity value, calculating the transmissivity, simulating a mathematical model and matching the concentration value.
Description
technical field [0001] The invention relates to the technical field of pesticide detection, in particular to the technical field of online detection of pesticide concentration. Background technique [0002] The measurement of liquid concentration has always played a very important role in the fields of chemistry, pharmacy, food, plastic processing and so on. The measurement of liquid concentration is mainly based on the specific gravity method. Recently, some new methods have been developed, such as: an ultrasonic concentration detection device designed according to the principle that ultrasonic waves propagate in solutions with different concentrations; The designed spectrophotometer; the optical fiber fluorescence spectral concentration sensor developed based on the luminescence mechanism of organic matter, etc. [0003] In the search for the existing mixed drug concentration measurement technology, it was found that Luan Chonglin et al. proposed the use of biosensor sam...
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IPC IPC(8): G01N21/59
Inventor 邱白晶潘玉凯
Owner JIANGSU UNIV