STUDY ON THE ASSAY QUALITY OF FOOD GRADE GPR BY UV—VIS METHOD

In this paper, the kind of remanent small molecules in unsaturated polyester res(?) (UP resin) , the best extractant and the best suitalbe extractive time for measuring the content of these small molecules were studied using ultraviolet- visible spectrophotometry ( UV-VIS method). According to the principle of additivity lightness absorption for mixid solution, the contents of samll molecules in several kinds of cured UP resin were measured. It is pointed out that the UV-VIS method in the assay quality of food grade GRP products is more suitable to China.

用UV—VIS法鉴别食品级玻璃纲质量的研究

本文用紫外—可见光分光光度法(UV—VIS法)研究了不饱和聚酯树脂(UP树脂)固化物中残存小分子的种类,以及用该法测定这些小分子含量时的最佳萃取溶剂及最佳萃取时间。并用混合溶液的吸光度具有加和性的原理,测定了几种UP树脂固化物中小分子的含量。指出将UV—VIS法用于食品级聚,酯玻璃钢质量检测,更适合我国国情。