蒸馏法测氨氮几点建议

Suggestions on measuring ammonia nitrogen by distillation

国家环境保护标准HJ535-2009《水质氨氮的测定纳氏分光光度法》中蒸馏法测氨氮,实际应用中发现,上述标准对检测环境、检测设备等并没有细致的、明确的说明。而这些方面所具备的条件的不同,会对测量结果产生一定的影响,造成测量结果的不准确。因此对蒸馏法测氨氮这一标准实际运用,提出了几点建议,进行了细化和完善。

During using the national environmental protection standard HJ535-2009"Water quality-Determination of ammonia nitrogen-Nesslers reagent spectrophotometry"to measure ammonia nitrogen by distillation method,it is found that in practical applications the standards do not have detailed and clear instructions for testing environment and testing equipment.The different conditions in these aspects will have a certain impact on the measurement results and cause inaccurate measurement results.Therefore,several suggestions are put forward,refined and improved for practical application of the standard for measurement of ammonia nitrogen by distillation method.