pH值对废水中氨氮监测结果的影响

The Influence of pH Value on the Determination Results of Ammonia Nitrogen in Wastewater

在相同水温条件下，采用中华人民共和国国家环境保护标准HJ537—2009（（水质氨氮的测定蒸馏一中和滴定法》测量水中氨浓度时，不同的pH值会对废水中氨氮浓度的监测结果造成影响。pH值对测定水样氨氮含量监测结果的影响呈先增大后下降的趋势，在pH值为6。0～7．4之间测定水样氨氮含量最大。

Different pH values will impact the determination of ammonium nitrogen concentration in wastewater detection using HJ 537- 2009 ' water quality-determination of ammonia nitrogendistillation-neutralization titration under the same water temperature. The experiments demonstrate with the increase of pH value the ammonium nitrogen concentration of the sample increases at first and then decreases, with the highest concentration of ammonium nitrogen concentration under pH 6. 0 ~ 7. 4.