Introduce a method as follows:
The PH value of artificial seawater is 8-8.5, the hardness is 7-9 degrees, the water temperature is about 26 degrees, the salinity is about 30%, the relative density is 1.022- 1.023, and the iron content is 0.05-0. 1 mg/L. ..
In addition, artificial seawater should maintain good water quality, the nitrite content in seawater should be controlled below 0.3 mg/L, and the nitrate content should be controlled below 5 mg/L. The raw water for preparing artificial seawater is generally tap water. Before preparation, tap water should be dried 1 week, and harmful substances such as chlorine and ammonia can be removed before use.
Extended data:
The preparation of artificial seawater is of great significance in scientific research, aquaculture and life.
It solves the problem of complex and unstable composition of natural seawater, and has important applications in aquaculture, such as using sea crystals to cultivate seafood in estuaries or low salinity areas.
In scientific research, when preparing artificial seawater, NaCl, KCl, CaCl2 and MgSO4(MgCl2) solutions with the same osmotic concentration as seawater are usually prepared first, and then these solutions are mixed according to an appropriate dissolution ratio. At this time, if the mixing ratio is changed and a certain component is removed, it can be used to study the physiological function of specific metal ions in seawater.
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