Patent ID: 6416652
Filing Date: 2002-07-09
Classification: G01N,Y10T

Abstract:
A method of measuring ammonia in liquid comprising:a) isolating a liquid sample; b) adjusting the pH of said sample at time t0; c) recording a value of ammonia present in said sample with an ammonia selective probe at a predetermined time t1; d) recording another value of ammonia present in said sample after another predetermined time t2; e) determining ammonia concentrations in said sample at each predetermined time t1 and t2 according to the following formula: [NH3]=10aÂ·mV+b â€ƒwherein a and b are linear coefficients of the ammonia probe; f) determining the amount of released ammonia from said sample according to the following formula: Î”&it;â€ƒ[NH3]Î”&it;â€ƒ&it;t=[NH3]2-[NH3]1t2-t1;andg) determining the ammonia concentration of the sample according to the following formula: [NH3]0=[NH3]1-Î”&it;â€ƒ[NH3]Î”&it;â€ƒ&it;t&CenterDot;(t1-t0).