There had no obvious difference between these two methods, the relative standard deviation was less than 10%, sample recovery rate was 86~119%.
两种方法测定不同类型水中的总铬结果无明显差异，相对偏差均小于10%， 回收率为86～119%。
The best condition of the instrument, sample handle methods, acidity, interfering, detectable limit, precision, rate of recovery and so on were selected and researched.
选择最佳的仪器条件，进行样品处理方法及酸度、干扰离子的研究，做了方法的检出限、精密度、加标回收率等方法学的研究。
When the viscosity of the sample solution is almost identical with the viscosity of the standard solution, the rate of recovery and precision are satisfactory.
当样品溶液的粘度与标准溶液的粘度基本一致时，得到了较理想的回收率和精密度。
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