The recovery rate, calibration curve, coefficient of variation of the filter paper method are compared with the direct analytical method. 文中对滤纸洗脱法的回收率、标准曲线、变异系数等均与直接分析(DA)法进行了比较。
A new direct analytical approach is proposed in this paper to Abel integral transformation, thus the singular point of integral is avoided, and computation process is simplified. Abel积分存在积分奇点的问题,根据这一问题讨论了解决奇异积分的几种不同的积分方法,并提出了一种直接求Abel积分变换的解析解。
Determination of gold and silver in gold mud by direct analytical method 直接灰吹法测定金泥中的金和银
Application of spectrograph with direct analytical line for aluminium and aluminium alloy analysis 光电直读光谱仪在铝及铝合金分析中的应用
Study on Concentration Direct Reading Analytical Method for Distribution of Micro-fluorine in Nanyang Color Wheat 南阳彩色小麦微量氟的分布及浓度直读快速分析方法研究