THP盐鞣制过程中的甲醛分析

Analysis of Free Formaldehyde in THP Salts Tannages

用乙酰丙酮分光光度法测定了不同pH时,四羟甲基季鏻盐(THP盐)溶液中的甲醛含量和THP盐鞣革中的甲醛含量,并研究了H2O2对鞣革中甲醛含量的影响。实验结果表明,未经处理的THP盐鞣革中甲醛含量较大,且其含量受鞣制pH影响较大,H2O2可有效减少THP盐鞣革中的甲醛含量。

The contents of free formaldehyde in tetrakis hydroxymethyl phosphonium chloride（THPC） solutions and in the leather tanned by THPC and tetrakis hydroxymethyl phosphonium sulfate（THPS） were determined.The results indicated that the contents varied with pH both in THP salts solutions and in the tanned leathers.The content of free formaldehyde in the leathers decreased with the employment of H2O2.