Simultaneous in-situ measurement of dissolved oxygen at different heights of mud-water interface and its detection method

Abstract

The invention relates to a detection device for simultaneously measuring dissolved oxygen at different heights on a muddy water interface in situ. A detection probe is connected with a dissolved oxygen glimmering host computer; a probe used for detecting the dissolved oxygen can extend out of the detection probe; the detection device further comprises a detection box; the detection box is arranged on the muddy water interface; a plurality of vertical through water chambers and a plurality of slots horizontally penetrating the detection box are formed in the detection box; the slots are communicated with the water chambers; the detection device further comprises a plurality of insert sheets; probe slots are formed in the insert sheets; the outlines of the probe slots are adapted to the outline of the detection probe; the detection probe can be placed and fixed in the probe slots; the insert sheets can be inserted and fixed in the slots; the extending probe can be located in the different water chambers by adjusting the depth of the insert sheets inserted into the slots. The detection device provided by the invention has the advantages that the dissolved oxygen at different heights on the muddy water interface can be simultaneously measured, repeated tests can be avoided, the time is saved and the true distribution of the dissolved oxygen at different heights on a certain position of the muddy water interface at a certain time can be acquired.

Description

technical field [0001] The invention relates to the technical field of dissolved oxygen detection equipment, in particular to a detection device and a detection method for simultaneous in-situ measurement of dissolved oxygen at different heights of a mud-water interface. Background technique [0002] The dissolved oxygen micro-optorode is a one-dimensional microprobe technology that can measure the dissolved oxygen concentration at a certain point on the mud-water interface. It is an optical fiber information exchange sensor based on the principle of fluorescence quenching. Since oxygen is the natural quencher of some fluorescent indicators, it makes an oxygen sensitive fluorescent indicator into an oxygen sensing film and couples it to the end of the optical fiber. It uses a high-brightness light-emitting diode As a light source and miniature photodiode detection system, the oxygen concentration is determined through the optical fiber conduction fluorescence quenching inten...

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Problems solved by technology

[0005] 1. In-situ measurement cannot be realized, and it is necessary to collect samples of the mud-water interface into the detection container. This process may easily lead to changes in the natural environment of the mud-water interface, resulting in a discrepancy between the dissolved oxygen at the mud-water interface and the actual situation;

[0006] 2. Only one dissolved oxygen micro-optorode probe can be controlled at a time to detect the dissolved oxygen at a certain height at a certain position of the mud-water interface. For the dissolved oxygen at other heights at this position of the mud-water interface, it can only be obtained through multiple measurements, but Multiple measurements will have a large span in time and cannot reflect the real situation;

[0007] 3. When detecting dissolved oxygen at different heights of the mud-water interface, it is time-consuming and labor-intensive, and the detection is very inconvenient

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