UV-Vis

Fluorescence spectroscopy also measures the interaction of light with a sample, but by measuring the emitted light rather than the absorbed light. It can be used to quantify the concentration of fluorescent substances and offers high sensitivity and specificity, similar to UV-Vis.

FTIR provides information about molecular vibrations, complementary to UV-Vis's electronic transitions. FTIR measures the absorption of infrared radiation by a sample, providing information about the chemical bonds present and can be used to identify and quantify different components. Both provide information about the composition of a sample, but FTIR focuses on vibrational modes while UV-Vis focuses on electronic transitions.

HPLC is a separation technique that can be coupled with UV-Vis detection. HPLC separates the components of a mixture, and UV-Vis can be used to detect and quantify the separated components. This makes the combination of the two technologies more powerful.

FT-IR is another name for FTIR. It provides information about molecular vibrations, complementary to UV-Vis's electronic transitions. FT-IR measures the absorption of infrared radiation by a sample, providing information about the chemical bonds present and can be used to identify and quantify different components.