UV Abs. Surrogates

UV absorption (UVA), is the % of UV light absorbed through a sample of water.

UVA Surrogates: Gain insights into organic contaminants

UVA surrogates measure parameters to estimate the concentration of dissolved organic matter (DOM) in water, particularly substances that absorb ultraviolet (UV) light at wavelengths around 254 nm.

Biochemical Oxygen Demand (BOD): Indicates the amount of organic matter that can be biologically oxidized in water, reflecting organic pollution levels.

Chemical Oxygen Demand (COD): Measures the total quantity of oxygen required to oxidize organic matter in water, correlating with UV absorbance and organic pollution.

Dissolved Organic Carbon (DOC): Correlates with UVA absorbance, estimating the concentration of UVA-active compounds in the water.

Total Organic Carbon (TOC): Provides an overall measurement of organic carbon present, indicative of UVA-active compounds and organic content.