Device and method for online detection of atmospheric salt fog content

Abstract

The invention discloses a device and a method for online detection of atmospheric salt fog content. The device comprises a sampling module and an analysis module, wherein the sampling module comprisesan absorption liquid storage box, a reagent liquid storage box, an air pump, a transfer pump, a sampling bottle, a reaction bottle, a sampling needle and a cuvette, the air pump is used for pumping the atmosphere to the sampling bottle, the transfer pump is used for pumping the absorption liquid in the absorption liquid storage box to the sampling bottle, the solution in the sampling bottle to the reaction bottle and the reagent liquid in the reagent liquid storage box to the reaction bottle, the cuvette is arranged on a conveyor belt, and the sampling needle can pump all the solution in thereaction bottle and inject the solution into the cuvette arranged on the conveyor belt; and the analysis module comprises a spectrophotometer. The device and the method for online detection of atmospheric salt fog content can reduce the measuring period of the content of the atmospheric salt fog and improve the testing accuracy.

Description

technical field [0001] The invention relates to a device and a detection method for online detection of atmospheric salt mist content. Background technique [0002] Salt spray refers to a diffuse system composed of tiny salt-containing droplets in the atmosphere. It is mainly caused by the violent disturbance of sea water in the ocean, the breaking of wind and waves, and the generation of a large number of foam and bubbles when the waves hit the shore; when the bubbles burst, they will produce Tiny water droplets, most of the seawater droplets fall due to gravity; some are distributed on the sea surface in a state of co-vortex diffusion and balance, and rise into the air with the airflow, and evolve into a mass system through cracking, evaporation, mixing and other processes , forming an atmospheric salt nucleus. [0003] The maximum value of salt spray content in the air occurs over the ocean. The content of salt fog over land is affected by atmospheric conditions, the de...

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Problems solved by technology

However, the content of atmospheric salt fog is not static. It changes with weather changes (such as: wind direction, wind speed, rainfall, etc.), seasonal changes, offshore distance and other factors, making it difficult to detect salt content

[0004] At present, the commonly used detection methods of atmospheric salt spray content mainly include: wet candle method, dry film method, etc. For the specific test process, please refer to GB / T 19292.3-2018 - "Corrosive Atmospheric Corrosivity of Metals and Alloys". These methods have a long period of data acquisition. The general cycle is one month, the data is greatly affected by the wind speed and direction in the environment, the repeatability is poor, and the operation is more complicated, and the human influence factors are large, which makes the reliability of the data questionable

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