30 dez 1929 ano - Gas Chromatography-Mass Spectrometry (GC-MS): This analytical technique, though refined later, has its roots in early chemical tests (like the 1836 Marsh test for arsenic) and modern instruments for toxicology and identifying unknown substances.
Adicionado na linha do tempo:
Data:
30 dez 1929 ano
Agora
~ 95 years ago