Reagent selection mass-spectrometric detection, reagents

Detection systems Halogen-containing herbicides are detected at the picogram level with the BCD ( Ni). Low limits are also obtained in some cases with selective nitrogen-phosphorus detector (NPD) or electrolytic conductivity (Hall) detector (ELCD) detection (Ing). Mass spectrometric detection is widely used due to its universal character as well as for its intrinsic sensitivity and selectivity. Both FI and Cl (using methane or isobutane as reagent gases) are used for ionization. Specific ions monitored in the... 

---