本研究的目的是检查在测定淡水和处理过的水样的特定紫外线吸收率（SUVA）值期间可能发生的变化程度，并阐明导致这种变化的重要因素。讨论了玻璃器皿的清洗方案、滤膜表面化学、溶解有机碳测量、紫外线测量、滤膜对NOM的吸附以及胶体与滤膜的相互作用。

The objectives of this research were to examine the extent of variability that is likely to occur during the determination of specific ultraviolet absorbance (SUVA) values of fresh and treated water samples, and to elucidate the important factors responsible for this variability. Cleaning protocols for glassware, filter membrane surface chemistry, dissolved organic carbon measurements, UV measurements, adsorption of NOM by filter membranes, and interaction of colloids with the filter membrane are discussed.