In the event of municpal reclaimed water being used in the circulatory cooling water system of power plants

the ammonia-nitrogen in it is one of the main contaminations

hence

it is necessary to detect ammonia-nitrogen correctly and rapidly

so as to adop measures timely and effectively for its treatment.The ammonia sensitive electrode potential method

which is simple

rapid

and environment freendly

hasn't been popularized in power plants due to lacking unitive quantitative analysis on the affecting factors of this method.For these

many affecting factors of the this method have quantitatively analysed and studied.Results show that the affecting factors

such as turbidity

chroma

conductivity

complex ions

and organic compounds etc.

didn't affect the result of measurement

the measured value of recovery rate for municipal reclaimed water samples all within 95%~105%

proving that the said method is suitable to determine the content of ammonia-nitrogen in municipal reclaimed water.