Determination of total boron Analytical method
Release time：2021/01/18 Author：
Meiqi
The preparation of the test solution was weighed 0.2g, accurate to 0.0001g, placed in a platinum crucible, adding 3.0g anhydrous sodium carbonate, and adding 1.0g anhydrous sodium carbonate after evenly mixing. The crucible cover was half-opened to allow the decomposed gas to get out, and the crucible was sent into a high-temperature furnace for 2 hours at 650,700 for 1 hour,750 for 1 hour.Then heat up to 900 molten 30 minutes, remove and rotate the crucible, make the melt with the crucible wall, cold to after, to the outer wall of water pot, into 100 ml of hydrochloric acid (volume fraction is 15%) of 250 m burn cup, moving a beaker to speed up the clinker dissolved, after waiting for sample out completely wash the pot and cover with water, into 250 ml volumetric flask cools, diluted with water to the scale, shake well, set aside.
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