Some cI reagent gases and reagent lons Reagent Gas Reagent lon Analyte lon H (M+H) CH CHs, C2Hs,(M+), M+C2H5) (M+C3H5) 10 9 (M+H),(M+C4H) NH3 NH4 (M+H), M+ NH4) NH3/CH4 NH4 (M+H) CHrONO/CHCHO (M-H NF3 F (M-H)Some CI Reagent Gases and Reagent Ions Reagent Gas Reagent Ion Analyte Ion H2 H3 + (M+H)+ CH4 CH5 + , C2H5 + , (M+H)+ , (M+ C2H5 ) + , C3H5 + (M+ C3H5 ) + i-C4H10 C4H9 + (M+H)+ , (M+ C4H9 ) + NH3 NH4 + (M+H)+ , (M+ NH4 ) + NH3 /CH4 NH4 + (M+H)+ CH3ONO/CH4 CH3O - (M-H)- NF3 F - (M-H)-