Spliced detecting device capable of measuring dissolved oxygen at mud-water interface in situ on large scale and detecting method thereof

Abstract

The invention discloses a spliced detecting device capable of measuring dissolved oxygen at a mud-water interface in situ on a large scale. The spliced detecting device comprises a dissolved oxygen micro optical pole host, a plurality of detecting probes, a box shell and detecting boxes, wherein the box shell is internally provided with a plurality of vertical through seat cavities; the detecting boxes can be put in the seat cavities to be fixed, can be put on the mud-water interface, and is provided with water passing cavities running vertically; the front side surfaces and the rear side surfaces of the detecting boxes are respectively provided with a plurality of front insertion grooves and rear insertion grooves which extend horizontally in the detecting boxes. The detecting device also comprises insertion sheets which are provided with probe grooves, wherein each detecting probe can be put into the probe grooves of the corresponding insertion sheets to be fixed; the insertion sheets can be inserted into the front insertion grooves or the rear insertion grooves, and can enable probe pins of the detecting probes to be placed into the water passing cavities. The detecting device can be used for simultaneously measuring the dissolved oxygen at different heights and the horizontal part of the mud-water interface on a large scale, and is rapid and convenient to use.

Description

technical field [0001] The invention relates to the technical field of dissolved oxygen detection equipment, in particular to spliced ​​detection equipment and a detection method capable of simultaneously measuring dissolved oxygen at a mud-water interface in a large range and in situ. 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 ...

AI Technical Summary

Problems solved by technology

[0005] 1. The detection range is small, and only the dissolved oxygen data at the mud-water interface near the dissolved oxygen micro-optorode probe can be collected at one time;

[0006] 2. In-situ measurement cannot be realized, and 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 dissolved oxygen at the mud-water interface being collected inconsistent with the actual situation;

[0007] 3. 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, the dissolved oxygen at other positions at this height 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;

[0008] 4. 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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