抗坏血酸法测定工业循环冷却水中二氧化硅  

Industrial Circulating Cooling Water Determination of Silica by Ascorbic acid

作　　者：缑卫军[1] 

机构地区：[1]河南工业大学化学工业职业学院实训中心,河南郑州450042

出　　处：《河北化工》2007年第4期50-52,共3页Hebei Chemical Industry

摘　　要：提出了用抗坏血酸代替1,2,4-磺酸(1-氨基-2-萘酚-4-磺酸)分光光度法测定工业循环冷却水中二氧化硅含量的方法。在610nm波长处,当水中二氧化硅含量小于4mg/L范围内线性关系良好,扩展范围可达0.22-10.8mg/L,最大相对标准偏差RSD为3.7%,其准确度、精密度均能达到分析要求。同时该方法也可用于锅炉水中二氧化硅含量的直接测定。The paper suggests the methods of representing 1,2,4-sulfonic acid （1-amino-2-naphthol-4-sulfonic acid） with ascorbic acid and determining the content of silica in industrial circulating cooling water with spectrophotometric method. At the 610 nm point of the wave-length, when the content of silican dioxide in water is less than 4 mg/L, the linear relationship is in good condition and to the extend of 0.22-10.8 mg/L. The max RSD is 3.7%. Both its accuracy and precison can reach the required standard. Similarly, this method can also be used for determination of silica boiler water.

关 键 词：抗坏血酸 工业循环水 二氧化硅 

分 类 号：O661.1[理学—分析化学]