Laser Intra-Cavity Technique for Detection of Traces of Insecticides

Abstract

Laser intra-cavity technique¹ has been used sucessfully for the detection of traces of atomic and molecular species (for further references see refs. 2 and 3). For this purpose a broad band flash lamp pumped dye lasers were mainly used. Gas lasers were introduced only on three occasions: a CO laser to detect NO⁴ and to determine the absolute densities of the individual vibrational levels of CO produced from the reaction between O and CS⁵ and a He-Ne laser to detect traces of cobalt in the solution².

Key Words:

• apsorption
• trace analysis of insecticides
• CO₂ laser