Detecting method for cyclops pelagian and its larva individual number in raw water

Abstract

This invention relates to a test method for Cyclops kind zooplanktons in water and its larva numbers, which takes a white tray as a test container, applies suitable artificial radiation and adds a certain volume of potassium permanganate solution to mix them by a glass rod and watch it to get the number, which can test numbers of Cyclops kind zooplanktons in water and its larvae quickly and accurately.

Description

technical field [0001] The invention relates to a method for detecting the individual number of zooplankton, in particular to a method for detecting the individual number of Cyclops zooplankton and their larvae in actual water bodies. Background technique [0002] The eutrophication of the water body has led to a large number of zooplankton of Cyclops, and the artificial overfishing has greatly relieved their survival pressure. Therefore, the zooplankton represented by Cyclops has gradually increased in some lakes and reservoirs in my country. as the dominant species. In addition, due to its own characteristics, it is difficult for Cyclops to be completely removed by the conventional water treatment process of urban water plants. Therefore, Daphnia continue to appear in the clear water ponds of water plants and even in the pipe network water in some large and medium-sized cities in my country, and there have even been many accidents in which Daphnia have appeared in the pipe...

AI Technical Summary

Problems solved by technology

[0004] In view of the insurmountable problem in the prior art about the detection of the number of Cyclops and larvae individuals in the actual water body, the purpose of the present invention is to provide an accurate, safe, fast and convenient detection of Cyclops zooplankton and their larvae in raw water. The detection method for the number of larvae individuals, the method is carried out according to the following steps: a. Pour 1L of detection water quality into a white tray, so that the depth of the water sample in the tray reaches 0.8-1.5cm; b. The operator stands on the longer side of the tray. On one side of the tray, the fluorescent lamp is placed horizontally above the other longer side of the tray, and forms an angle of 30° with the top of the tray, so that the connection line between the center of the fluorescent tube, the operator, and the center of the tray forms a straight line. And the central axis of the fluorescent tube is perpendicular to the connecting line between the operator and the center of the tray, and the horizontal distance between the fluorescent tube and the tray is 10cm; c. Add potassium permanganate solution drop by drop to the center of the tray, and stir evenly with a glass rod at the same time, so that The water body is slightly pink; d. Stand still for 10-20 seconds before the test, and start the test when the water surface is calm, and observe the number of adults and larvae