Fast measurement method of nitrate in aquaculture water

Abstract

The invention relates to the technical field of detection, and in particular to a fast measurement method of nitrate in aquaculture water. The method comprises the following steps: taking water; filtering impurities, small animals and plants, fish eggs and algae by using filter paper to obtain primary filtered water; filtering microorganisms in the primary filtered water via a microorganism filtering system to obtain secondary filtered water; pouring the secondary filtered water into a one-liter fixed-capacity bottle, and sealing the one-liter fixed-capacity bottle for use; and taking out thesecondary filtered water from the fixed-capacity bottle to perform ultraviolet spectrophotometry of the nitrate. The small organisms and impurities visible to the naked eyes are filtered by the filterpaper, and the microorganisms are filtered by the microorganism filtering system to prevent a change in the nitrate concentration in an inspection process of a water sample; and the content of nitrate is measured by using the ultraviolet spectrophotometry method, an ultraviolet spectrometer is widely used due to the miniaturization and intelligence, and can be operated onsite even if in a farm, and the measurement speed can be greatly improved.

Description

technical field [0001] The invention relates to the technical field of detection, in particular to a rapid determination method for nitrate in aquaculture water. Background technique [0002] In aquaculture water, such as fish ponds, due to the release of ammonia substances such as urea and uric acid by fish, insects and microorganisms, they will eventually be converted into nitrate in the water body. When nitrate accumulates to a certain concentration, it may cause adverse effects on farming. [0003] Therefore, the industry will regularly test the nitrate of the aquaculture water. If it exceeds the standard, it needs to be adjusted by changing the water and planting green aquatic plants. Existing detection methods mainly include test paper method, chemical method and spectroscopic method. The test paper method is easy to operate and quick to measure, but it can only know whether the water body exceeds a certain value; the other two methods generally require on-site wate...

AI Technical Summary

Problems solved by technology

During the process of water collection and inspection, the nitrate content of this small sample out of the water body fluctuates due to the interaction or death and decomposition of various organisms in a very limited space, and the final measurement results may not be accurate. Real reflection of the real state of aquaculture water