Herrick R F, Smith T J
National Institute for Occupational Safety and Health, Cincinnati, OH 45226.
Am Ind Hyg Assoc J. 1987 Sep;48(9):766-72. doi: 10.1080/15298668791385543.
A method has been developed for determining the quantity of the epoxide functional group in pure epoxy resins, resins in partially-cured mixtures with amine curing agents, and commercial epoxy surface coatings. The method is based upon the reaction of the epoxide group with bromide in the presence of acid, with measurement of excess bromide in the reaction mixture by normal pulse polarography. The method extends the range of previously reported methods for epoxy analysis to samples containing 1 to 100 microequivalents (microeq) of epoxide functionality, while maintaining good precision and accuracy (coefficient of variation less than 0.06; accuracy within 2% of expected). The method has been developed for application to analysis of the epoxy content of environmental aerosols such as those of epoxy paint sprays.
已开发出一种方法，用于测定纯环氧树脂、与胺类固化剂形成的部分固化混合物中的树脂以及商用环氧表面涂层中环氧官能团的含量。该方法基于环氧基团在酸存在下与溴化物的反应，通过常规脉冲极谱法测定反应混合物中过量的溴化物。该方法将先前报道的环氧分析方法的范围扩展到含有1至100微当量（μeq）环氧官能度的样品，同时保持良好的精密度和准确度（变异系数小于0.06；准确度在预期值的2%以内）。该方法已开发用于分析环境气溶胶（如环氧漆喷雾产生的气溶胶）中的环氧含量。
