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- The relative standard deviation should be no greater than 2.0%. 其相对标准偏差也应不大于2.;0%25。
- Relative Standard Deviation (RSD) of 3.89%, is less than 5%. 相对标准偏差为3.;89%25,小于5%25。
- The ave rage recovery was 97.2% with relative standard deviation of 3.4%. 平均加样回收率97.;2%25;RSD为 3
- The relative standard deviation is no more than 2%, and the results agree well with the GB Standard method. 在优化的实验条件下,测定的精密度达到2%25以下,与国家标准分析方法进行对照,结果无显著性差异。
- Recoveries from 92% to 101% were obtained with relative standard deviation of 2.7%-5.5%. 方法回收率为92%25-101%25,相对标准偏差为2.;7%25-5
- The relative standard deviation (RSD) of precision test was 1.2% (n=5) and the recovery of standard addition is 97.5%-102.5% . 本法的相对标准偏差RSD为1.;2%25(n=5);回收率为97
- The results showed that the detection limit of DPG was 0 05%, the relative standard deviation was 0 78%, and the average recovery was 100 3%. 结果表明 ;DPG的最低检测限为 0 .;0 5%25;相对标准偏差为 0
- The detectable limit for EPT in propylene is 10ppm, the recovery efficiency is greater than 95%, and the relative standard deviation is less than 6%. 叙述了用顶端空间气相色谱技术测定聚丙烯中ppm级对甲基苯甲酸乙酯(简称EFT),可定量检出残留在聚丙烯中低达10ppm的EPT,相对标准偏差小于6%25,回收率大于95%25。
- The average recovery and relative standard deviation of amidopyrine,phenazone,barbital obtained by ANN were99.4%,2.0%,100.6%,1.8%,1... 结论:人工神经网络法可快速、准确地测定复方药物制剂多组份含量。
- The relative standard deviation of the reproducibility for this method is 1.73%, which indicated that reproducibility is good. 此法的重现性试验的相对标准偏差为1.;73%25;表明重现性较好。
- For example, in a test for dosage form content uniformity, the standard deviation (or relative standard deviation) is also reported. 例如:在制剂含量均一性检验中、标准偏差(或相对标准偏差)也应报告。
- It is simple and quick for GFAAS to determine trace Sb in pure Cu, the relative standard deviation( RSD) is 6.90 % , and the error is 5.56 % . 用石墨炉原子吸收法测定纯铜中痕量锑;相对标准偏差为6.;90%25;相对误差为5
- The precision of an analytical procedure is usually expressed as the standard deviation or relative standard deviation (coefficient of variation) of a series of measurements. 分析方法的精密度通常以一系列测量值的标准偏差或相对标准偏差(变异系数)来表示。
- CDC is the most sensitive for determining composition ratio. Detection limits fof PET and PBT are 0.5%. The relative standard deviation is less than 1%. 对于组分比的测定;CDC法最灵敏;PET和PBT的检测极限为0.;5%25;相对标准偏差<1%25。
- A linear correlation is observed, and the correlation coefficient is 0.9998, the relative standard deviation is 1.05%(n=7), the recovery is 99.0%~100.3%. 在选定的试验条件下,线性关系良好,标准曲线的相关系数为0.;9998,测定的相对偏差为1
- Replicate analysis of two seawatet samples with Ag concentration of 0.05ppb and 0.10 ppb shows the relative standard deviation of 3.0% and 3.8% respectively. 对含银为0.;05ppb和0
- The reoveries of acrylonitrile,acrylic acid and acrylamide reached as high as 98.5%,102.1% and 105.0%,with the relative standard deviation of 9.1%,5.3% and 1.7%,respectively. 在4 min内;3个组分得到完全分离;该方法具有良好的重现性和线性关系;回收率分别为98.;5%25、102
- Contents of CaO-2 and MgO-2 were 31.99% and 21.47%; its relative standard deviation were 0.81%and 0.65%; average recorery ratio were 99.9% and 102%,respectively. 对样品测定取得了满意的结果 ;氧化钙与氧化镁的含量分别为 3 1 .;99%25和 2 1
- Effects of acidity,concn.of potassium iodide and dosage of reducing agent on determination are investigated.It is simple and rapid with relative standard deviation 1.08%. 研究了酸度、碘化钾浓度、还原剂用量对测定影响。测定的相对标准偏差为1.;08%25;方法简单、快速。
- Also, the optimal experiment parameters were investigated.The standard solution of Na2CO3 was determined by the method.The relative standard deviation is 0. 18% , and the rela... 用该方法对碳酸钠标准溶液进行测定;测定结果的相对标准偏差为0.;18%25;测定值与理论值的平均相对误差为0