Immersion-type ultraviolet-visible spectrophotometer detection head and detection method

Abstract

The invention discloses an immersion-type ultraviolet-visible spectrophotometer detection head, and particularly relates to an ultraviolet-visible light source and an ultraviolet-visible spectrophotometer detection head. The invention provides the ultraviolet-visible spectrophotometer detection head which is separate from a main machine, is small, and can be placed directly in water to realize real-time detection. The ultraviolet-visible light source is formed by a xenon lamp and a tungsten lamp, and an ultraviolet-visible light beam is formed by combining through a coupler to be used as the light source. The detection head specifically includes incident optical fiber, an incident optical fiber connector, an incident optical reflector, an incident optical fiber collimator, an isolating plate, an outgoing fiber collimator, an outgoing optical fiber connector and outgoing optical fiber. The detection head is connected with the light source and an optical splitting system through ultraviolet optical fiber.

Description

technical field [0001] The invention belongs to the field of spectroscopic instruments, and in particular relates to an optical design of a detection head of an immersible ultraviolet-visible spectrophotometer. Background technique [0002] UV-Vis spectrophotometer is a spectral detection instrument for qualitative and quantitative measurement of substances, and is widely used in water quality detection, atmospheric detection, medicine and other fields. [0003] The UV-Vis spectrophotometer currently on the market mainly adopts the method of placing the sample in the cuvette located in the spectrometer, which can neither realize real-time monitoring, but also increases the probability of the sample being contaminated during the movement; The space of the dish is fixed, and the optical path of the light in the measured object is not easy to change, which lacks the flexibility in practical applications. At present, there is no UV-visible spectrophotometer that can be directly...

AI Technical Summary

Problems solved by technology

The above-mentioned water quality detection device adopts a dual optical path system, but in actual application, the sample is still collected first, and then the sample is placed in a special cuvette, and then the cuvette is put back into the instrument for measurement. There are many disadvantages in this detection method: 1. In the process of collecting and moving samples, the samples are easily affected by the outside world, making the test results inaccurate; 2. Only a few samples can be taken from one or several places at regular intervals For detection, continuous work and real-time monitoring cannot be realized; 3. Multi-point detection of large-scale occasions such as reservoirs cannot be realized, or it is more complicated to realize; 4. The optical path of light in the sample cannot be changed

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