Detection device and detection method for slidably in-situ measuring dissolved oxygen of muddy water interface

Abstract

The invention discloses a detection device for slidably in-situ measuring dissolved oxygen of a muddy water interface. The detection device comprises a dissolved oxygen glimmering pole host computer, wherein the dissolved oxygen glimmering pole host computer is connected with a detection probe; a needle used for measuring the dissolved oxygen can extend out of the detection probe; the detection device is characterized by further comprising a detection box; the detection box can be placed on the muddy water interface; a water chamber which penetrates up and down and a detection chamber which horizontally penetrates front and back are arranged on the detection box; the water chamber is jointed with the detection chamber; the detection device further comprises an insert slice; a probe slot is formed on the insert slice; the outline of the probe slot is matched with the outline of the detection probe; the detection probe can be put into and fixed in the probe slot; the insert slice can be inserted into the detection chamber and can slide up and down in the detection chamber; the horizontal position of the needle can be adjusted by adjusting the depth of the insert slice inserted into the detection chamber; and the height between the needle and the muddy water interface can be adjusted by sliding the insert slice up and down. The detection device provided by the invention has the advantage that the accurate in-situ measurement for the dissolved oxygen at a certain height of the muddy water interface can be realized.

Description

technical field [0001] The invention relates to the technical field of dissolved oxygen detection equipment, in particular to a sliding type in-situ detection device for measuring dissolved oxygen at a mud-water interface and a detection method thereof. 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 intensity. Because the ...

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Problems solved by technology

[0004] 1. It is necessary to collect samples of the mud-water interface into the detection container. This process will easily lead to changes in the natural environment near the mud-water interface, resulting in the fact that the dissolved oxygen near the sampled mud-water interface does not match the actual situation;

[0005] 2. The height of the probe from the mud-water interface requires mechanical control and is easily damaged. The operation is time-consuming and labor-intensive, and the detection is very inconvenient

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