中文摘要：

造纸白水中的溶解物质和胶体物质（DCS）会影响微粒及纤维的留着,延长网部的脱水时间,而且会影响化学助剂的应用效果和纸机的运行性能,进而影响成纸质量.综述了造纸白水中存在的主要物质及其来源、DCS的主要组成及影响以及DCS性质的常用分析方法.

英文摘要：

The dissolved and colloidal substance （DCS） in papermaking whitewater will affect the retention of the particles and fibers, and extend dewatering time on the wire section, then will gradually affect efficiency of the chemical additives added to the papermaking system and paper machine running performance, finally affect the quality of the finished paper. The article reviewed the main substances existing in whitewater and their origin, the main composition of DCS, and then introduced the methods for analyzing the DCS nature and impact. The a- nalysis of whitewater DCS can provide a reliable basis to resolve the impacts of the DCS.