求翻译：本文概述了蒸馏法测定水中氨氮经常遇到的问题，提出了使用改进了的蒸馏装置对水样进行蒸馏预处理，在合理控制PH的前提下，所得数据具有较高的精密度和准确度，符合环境监测规定的要求。是什么意思？

This article provides an overview of the distillation method for the determination of ammonia in water is often encountered problems, the use of improved distillation unit distillation pretreatment of water samples, the data obtained with high precision and accuracy under the premise of the reasonab

This paper provides an overview of how the water distillation process to determine ammonia and nitrogen frequently encountered problems, and presented the improved use of distillation unit in the water as a distillation, in reasonable control of PH and the data obtained with a higher precision and a

This article has outlined the question which in the distillation determination water the ammonia nitrogen meets frequently, proposed the use improved the distilling apparatus carries on the distillation pretreatment to the water sample, in controls PH reasonably under the premise, the obtained data

This article provides an overview of ammonia nitrogen from water by distillation often encounter problems, using improved distillation unit is made to distillation water pretreatment, in the context of rational control of PH, precision and accuracy of the data has a high, meet the requirements of re

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