抗坏血酸的含量测定方法很多,有氧化还原滴定法、比色法、高效液相色谱法、气相色谱法、电分析法、酶法及其他各种技术相结合的方法。然而,用于软饮料和果汁分析时,为了排除干扰,往往需要作烦琐的前处理。本文介绍一种校正背景吸收的直接分光光度法。背景校正法有热分解法、铜离子催化分解法、紫外光分解法和碱处理法。其中以碱处理法为最 Determination of ascorbic acid content of many ways, there are redox titration, colorimetry, high performance liquid chromatography, gas chromatography, electrodialysis, enzymatic and other methods combined. However, when used in soft drink and fruit juice analysis, cumbersome pretreatments are often required to eliminate interference. This article describes a direct background color correction method. Background correction method with thermal decomposition, copper ion catalytic decomposition, UV decomposition and alkali treatment. Among them, the alkali treatment method is the most