has proper occurrent part
gas chromatography
nitrogen–phosphorus detection
gas chromatography-nitrogen-phosphorus detection
gas chromatography nitrogen-phosphorus detection
gas chromatography-nitrogen-phosphorus detection
gas chromatography nitrogen phosphorus detection
Nitrogen-phosphorus detection where the input is from a gas chromatography separation.
GCNPD
CHMO:0001737
GC/NPD
GC-NPD