14.16 : 火焰光度法：概述

Flame photometry, or flame emission spectrometry, uses a flame to excite a sample solution.

Flames should possess sufficient energy for atomization, low emission and absorption at relevant wavelengths, and the ability to operate at low gas velocities.

Propane-air flames are typically used, as butane-air and natural gas-air flames are less sensitive due to lower temperatures.

Flame photometers use a nebulizer-burner system to transform sample solution into a mist or aerosol. There are two main types of burners.

Pre-mix or laminar flow burners generate a fine mist in a vaporizing chamber, which is then mixed with fuel and oxidant gases before reaching the burner head.

Total consumption or turbulent flow burners consist of three concentric tubes that carry the sample solution, fuel gas, and oxidant gas separately, allowing them to mix only at the burner tip.