单镍盐着色槽硼酸含量快速测定方法研究

Single nickel salt coloring slot on Rapid Determination of boric acid content

文章研究铝型材加工表面处理单镍盐着色槽硼酸含量快速测定方法。硼酸酸碱滴定测定的关键环节是加入甘露醇使硼酸转化成强化络合酸的完全程度、基体干扰的排除和精准的滴定终点指示方法。通过10次平行测定合成模拟样品和10次平行测定槽液样品硼酸含量计算相对标准偏差确定方法精密度,采用试样加标回收率试验确定方法的准确度。该方法具有快捷、准确、稳定和实用性强的优点。

Study on surface treatment of aluminum profile processing of single nickel salt of boric acid content determination method of coloring trough. Boric acid base titration determination of several key links are joined mannitol to boric acid into strengthening the eomplexing acid degree, the matrix interference and accurate, titration end point indication method. The test selection respond hest In mannitol, composite PH electrode indicating titration end point of titration end point, control PH8.0 avoid Nickel precipitation interference,Interferenee of aluminium is quantitative, can be deducted in the calculation. By 10 parallel determination of synthetic samples and 10 parallel determination of boric acid content of liquid sample calculation method for determining the precision of relative standard deviation, sample standard addition recovery rate test to determine the accuracy of the method.Method with fast and stable accurate and practical advantages.