What is the main purpose of using a spectrophotometer in a water treatment context?

The main purpose of using a spectrophotometer in a water treatment context is to analyze chemical concentrations. This instrument utilizes the principle of light absorption by different chemical substances in a water sample. When light passes through a sample, certain wavelengths are absorbed by the chemicals present, and the amount of light absorbed relates directly to the concentration of those substances.

This capability allows water treatment professionals to determine the levels of various contaminants, nutrients, or other compounds within the water, which is critical for ensuring water quality and compliance with health and safety regulations. By accurately measuring these concentrations, operators can make informed decisions about the treatment processes required to achieve safe drinking water.

While measuring pH levels and treating contamination are important aspects of water treatment, those functions are performed with different instruments or methods. The purpose of a spectrophotometer is specifically focused on the quantitative analysis of chemical substances based on their interaction with light.