boron resin
5.A method for isotopic determination of boron in rock samples was developed in this study. The rock samples were decomposed with the mixture of Na 2CO 3 and K 2CO 3. Boron in sample was then purified by ion exchange with Amberlite IRA 743 resin and the mixture of cation exchange resin (H + form) and anion exchange resin (ion exchanger Ⅱ, HCO - 3 form).
6.The results showed that after a small amount of polyvinyl acetals resin wasadded into CCB the leaching of copper,chromium,boron decreaced 57.63,78.53 and 96.4%respectively,the tangential,radical and volumetric wet-swelling rates decreased 91.97,88.34,84.20%,The decay resistance of treated wood was improved distinctly.
7.Amethod for determination of the fre e fatty acid in bacon was founded . FFA s in bacon were purified by Amberlyst -26(A-26)strong basic anion exchanger resin,using C 15:0 as internal standard(IS),FFAs were catalysed by boron triflu o-ride -methanoland converted into th e methylester,finally determined b y GC.
