TABLE II

Examples of Complementing RRFs Across Orthogonal Techniques in the Database for HS-GC-MS, GC-MS, and LC-MS (APCI)

CasCompound NameTechnique Specific RRF Values
HS-GC-MSGC-MSLC-MS
Complementing HS-GC-MS & GC-MS & LC-MS RRF Entries
    95-16-9Benzothiazole0.0030.901a1.209
    100-52-7Benzaldehyde0.0420.6990.178
    98-86-2Acetophenone0.0330.6900.009
    761-65-9N,N-Dibutylformamide0.0010.5591.206
    1119-40-0Pentanedioic acid, dimethyl ester0.0010.4600.245
Complementing HS-GC-MS & GC-MS RRF Entries
    135-98-8sec-Butylbenzene2.9900.928n.db
    95-47-6o-Xylene1.7400.914n.d
    106-46-71,4-Dichlorobenzene1.7200.705n.d
    112-41-41-Dodecene1.510c0.556cn.d
    629-50-5n-Tridecane2.270c0.422cn.d
    629-62-9n-Pentadecane0.5331.025n.d
    104-76-72-Ethyl-1-hexanol0.0970.588n.d
    4265-25-22-Methylbenzofuran0.4680.894n.d
    111-70-61-Heptanol0.1460.631n.d
    112-73-2Diethylene glycol di-n-butyl ether0.0710.669n.d
Complementing GC-MS & LC-MS RRF Entries
    1568-83-8Bisphenol A dimethyl ethern.d1.6300.101
    2943-75-1Triethoxyethyl-n-octylsilanen.d1.2100.013
    80-46-64-tert-Pentylphenoln.d1.1100.100
    101-02-0Triphenyl phosphiten.d0.9220.279
    80-07-9Bis(4-Chlorophenyl) sulfonen.d0.8930.050
    149-30-42-Mercaptobenzothiazolen.d0.1120.459
    619-21-63-Formylbenzoic acidn.d0.0781.081
    1212-29-91,3-Dicyclohexythiourean.d0.0621.043
    2306-33-4Monoethyl phthalaten.d0.0410.410
    4559-70-0Diphenylphosphine oxiden.d0.0240.936
  • a Bold entries reflect the method that would give the most accurate and reportable concentration estimate.

  • b n.d. Compound outside scope of technique.

  • c For these analytes, HS-GC-MS and GC-MS results are nearly equally acceptable.