ML Smith 2007 Citovan 66-krt A constant DC to AC current ratio (AC current produces a radiofrequency field) selects the resonant ion. Source: http://www.chem.vt. edu/chem-ed/ac-meths.html.. 9. 5. 2021 Principles of forensic toxicology by barry levine, january 1, 2006, american association for clinical chemistry, edition, paperback in…. New horizons of criminology (3rd ed.). Englewood Cliffs, NJ:…