Nitrogen–phosphorus detector
DETECTOR USED IN CHROMATOGRAPHY
Thermionic Detector; Nitrogen Phosphorous Detector; Nitrogen phosphorus detector; Nitrogen Phosphorus Detector; Nitrogen-phosphorus detector
The nitrogen–phosphorus detector (NPD) is also known as thermionic specific detector (TSD) is a detector commonly used with gas chromatography, in which thermal energy is used to ionize an analyte. It is a type of flame thermionic detector (FTD), the other being the alkali flame-ionization detector (AFID also known as AFD).