Urgently needed: How to determine the borate content in mixed salts!
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Hello everyone, I earnestly request the experts’ guidance regarding the borate content and vanadate content in mixed salts! Thank you!
This post was last edited by qugd on 2012-10-26 08:42. What is this mixed salt? What is the sample matrix? Vanadates can be determined by colorimetry, namely the phosphovanadomolybdenum blue colorimetric method ； Borates can also be determined by colorimetry, using the curcumin colorimetric method.
Vanadates can be analyzed by potentiometric titration. Borates are determined by acid-base titration: the sample is dissolved and acidified to form boric acid, a weak acid; then mannitol is added to form hydroxy complexes, which stabilize the release of a hydrogen ion. Through acid-base titration, the amount of base consumed indicates the amount of B, and from this value, the amount of borate can be calculated. . ）
Thank you for your guidance, master. Could you please share the procedures? Thank you. Mixed salt is a mixture of potassium carbonate, potassium bicarbonate, vanadium pentoxide, and boric acid; we need to determine the contents of vanadic acid and boric acid.