CAJ | 학술논문

介绍了三种方法配制二氧化硅标准溶液，使用硅钼蓝分光光度法进行结果比对，对影响标准溶液浓度的因素进行了分析，全面评定了配制过程产生的不确定度。实验结果表明，在实际配制中，通过筛选原料的纯度，严格控制操作步骤，可以有效减小标准溶液标称值的不确定度，提高检测结果的准确度。
개소료삼충방법배제이양화규표준용액，사용규목람분광광도법진행결과비대，대영향표준용액농도적인소진행료분석，전면평정료배제과정산생적불학정도。실험결과표명，재실제배제중，통과사선원료적순도，엄격공제조작보취，가이유효감소표준용액표칭치적불학정도，제고검측결과적준학도。
Three methods of preparation of silicon dioxide standard solution were introduced and silicomolybdate blue spectrophotometric method was used to compare results. The factors of uncertainty were analyzed and the uncertainty evaluation was performed finally. The concentrations of silicon dioxide in three solutions were as following:1.000 0±0.000 8,0.995±0.006,1.000±0.004(g/L, k=2). The results indicate that by screening purity of raw materials and simplifying operation steps, the uncertainty of standard solution can be effectively reduced and the accuracy of test results could be enhanced.