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Abstract：
The preparation and application of the composite material \"crosslinked polyvinyl alcohol-magnetite\" as a sensitive matrix for use in digital colorimetry and optical micrometry methods are discussed. The material was synthesized in the form of spherical granules (for micrometry) and thin films (for digital colorimetry). The obtained composites were characterized by the registration of magnetization curves. It was shown that the amount of grown Fe3O4 particles in the polymer gel is in linear dependence with the iron salt concentrations in the impregnating solutions. The composite granules were applied to determining monosaccharides using optical micrometry. The optimal pH value for the total amount of monosaccharides\' determination was 8.6. The study of the analytical response of composite granules and films performed with a low limit of detection (7.9 mmol/dm3) of both glucose and fructose and a possibility of the control of high alcohol contention in water media. The granules were used to determine the total carbohydrate content in samples of natural honey and syrups with high fructose contents, while the films were used to control the alcohol content in hand antiseptics. The results obtained are in good agreement with the data provided by the manufacturers.
摘要：
讨论了复合材料“交联聚乙烯醇-磁铁矿”作为用于数字比色法和光学显微测量方法的敏感基质的制备和应用。该材料以球形颗粒(用于显微测量)和薄膜(用于数字比色法)的形式合成。通过磁化曲线的配准来表征获得的复合材料。结果表明，聚合物凝胶中生长的Fe3O4颗粒的量与浸渍溶液中的铁盐浓度呈线性关系。将复合颗粒应用于使用光学显微测定法测定单糖。测定单糖总量的最佳pH值为8.6。对复合颗粒和薄膜的分析响应的研究具有葡萄糖和果糖的低检测限（7.9mmol/dm3），并且有可能控制水介质中的高酒精争用。颗粒用于测定天然蜂蜜和高果糖含量糖浆样品中的总碳水化合物含量。而这些薄膜用于控制手部防腐剂中的酒精含量。获得的结果与制造商提供的数据非常吻合。
