| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for selectively quantitating free boric acid included in a polymer composition.SOLUTION: The method for quantitating free boric acid in the polymer composition including a polymer material and free boric acid includes following processes (A)-(D); a process (A) for crushing the polymer material, a process (B) for mixing the polymer composition crushed in the process (A) with a coordinating compound capable of forming the free boric acid and a complex ion, a process (C) for removing the polymer material from the mixture obtained by the process (B), and a process (D) for quantitating the boric acid included in the mixture from which the polymer material is removed in the process (C). |
