The differential infrared spectrometry for determination of oxidation number and nitration number of oil products is an effective measure for monitoring the oxidation and nitration of automobile oil in the course of using.
根据差示红外光谱法原理 ,测定并记录在用油和新油在 185 0~ 15 5 0cm- 1的红外光谱图 ,运用计算机进行差谱分析处理 ,在差谱图中读取 185 0cm- 1和 172 0cm- 1及 16 30cm- 1处的吸收值 ,再根据基线法分别求出旧油中的氧化值和硝化值。
Research on oil extraction methods in peroxide value determination of microencapsulated evening primrose oil;
月见草油微胶囊粉末油脂中油脂过氧化值测定之提油方法的研究
Poly-phenols were extracted from broomcorn,sweet broomcorn,barley,rice bran,rice,and oat by 70% methanol,70% ethanol,and 70% acetone;the antioxidation value(AOV) and capacity of scavenging hydroxyl radicals of each extract were determined.
分别采用体积分数为70%的甲醇、乙醇、丙酮对米糠及高粱、甜高粱、大麦、水稻、燕麦等谷物中的多酚类化合物进行提取,并测定其抗氧化值和羟基自由基清除作用。