A kind of ammonia nitrogen fluorescence detection method

Abstract

The invention discloses an ammonia nitrogen fluorescence detection method, which comprises an ammonia nitrogen fluorescence detection device, the device comprises an ammonia gas generating bottle, a reaction membrane holder and a detection bottle, the ammonia gas generation bottle is a jar; the reaction membrane holder includes The middle part is a placement table and a suspension frame with a through hole, and the placement table and the suspension frame are connected as a whole; the detection bottle is equipped with an ultraviolet light emitter, and the side of the detection bottle is provided with a transparent observation window; the bottle of the ammonia gas generation bottle The mouth is connected with the bottom of the detection bottle, and the reaction membrane frame is sleeved at the junction of the ammonia gas generation bottle and the detection bottle. This device is easy to carry, easy to operate, can be operated by non-professionals, and has a wide range of applications; this method only needs to observe the color depth of the reaction film with the eyes and compare it with the standard color card to judge the concentration of ammonia nitrogen in the water sample. The water sample does not need to be filtered, which is simple, fast and highly accurate.

Description

technical field [0001] The invention relates to the field of ammonia nitrogen detection in water bodies, in particular to a fluorescence detection method for ammonia nitrogen. Background technique [0002] Ammonia nitrogen is the nutrient substance of algal substances, which can cause eutrophication in the water body, resulting in the lack of oxygen in the water body, deterioration of water quality, and aquatic organisms such as fish cannot survive. At the same time, under aerobic conditions, ammonia nitrogen can be oxidized by microorganisms to nitrite nitrogen, and nitrite nitrogen combines with protein to form nitrosamines, which have carcinogenic and teratogenic effects. Therefore, the concentration of ammonia nitrogen in the water body can reflect the degree of pollution of the water body, and it is one of the must-test indicators for surface water quality and fishery water quality. [0003] The reported ammonia nitrogen detection methods include gas-sensitive ammonia ...

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Problems solved by technology

[0003] The reported ammonia nitrogen detection methods include gas-sensitive ammonia electrode method, visible spectrophotometry and fluorescence spectroscopy, etc. These methods require professional equipment and professional operation, and are difficult for non-professionals such as fishermen

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