水质蒸馏法检测氨氮方法的调整

Water distillation test ammonia nitrogen method adjustment

针对实验室使用HJ535-2009中纳氏试剂分光光度法（蒸馏法）检测水质回收率不达标情况进行研究分析，实验人员发现由于PH值受硼酸缓冲体系的影响，导致反应不能正常进行，通过对PH值的调整，使回收率达列方法要求，从而提高了方法的准确性。

based on the laboratory use HJ535-2009 nessler＇ s reagent spectrophotometry （distillation） testing water recovery does not reach the analysis, the researchers found that due to the PIt value by boric acid buffer system influence, resulting in the reaction cannot proceed, through to the Pit value adjustment, make recovery method to requirements, so as to improve the accuracy of the method.