Method for calibrating ammonia nitrogen concentration based on turbidity

Abstract

The application discloses a method for calibrating ammonia nitrogen concentration based on turbidity, which comprises the following steps: preparing turbidity standard solutions with different concentrations and measuring their absorbance; preparing ammonia nitrogen solutions with different concentrations and measuring their absorbance; using the turbidity standard solutions with different concentrations to configure the ammonia nitrogen solutions with different concentrations and measuring their absorbance; determining the linear relationship between turbidity and ammonia nitrogen concentration and establishing a relationship model; and calibrating the ammonia nitrogen concentration based on the relationship model. The scheme of the application does not need to consider the influence of chroma, and only by establishing a relationship model between turbidity and ammonia nitrogen, the concentration of ammonia nitrogen can be corrected by measuring the turbidity of a sample, so that the calibration process is simplified and the calibration accuracy is improved. Meanwhile, the application has a wider calibration range compared with the prior art.

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