| abstract |
The invention belongs to the technical field of analysis, discloses the application of a rare earth element complex in detecting trace nitrite in mineral water, and discloses a new method for detecting trace nitrite in mineral water. The specific method is as follows: add 2.7mL of rare earth element complex to the buffer system of mineral water, after mixing evenly, use 280nm as the excitation wavelength to detect the fluorescence emission peak at 493nm, and combine the working curve to realize the detection of nitrite according to the change of the fluorescence signal. detection of ions. The luminescent complex of the invention is not interfered by other ions in the mineral water, and has the characteristics of high selectivity, convenient operation and high accuracy. |