Document ID: chunk:federal_register_of_legislation:F2013C00288:reg:3630c
Version: federal_register_of_legislation:F2013C00288
Segment Type: reg
Provision Reference: reg 3630C
Character Range: 808565–809256

3630C  Silica gel column clean-up

The extract should be concentrated using a Kuderna Danish (KD) evaporator or other suitable method and solvent exchanged to cyclohexane, prior to clean-up.

10.2.3.4     Extract analysis

(P)  8270D  GC/MS (capillary column)
     8310   HPLC with UV* and fluorescence* detectors

*Due to the high probability of interferences using these less specific detectors, clean-up of extracts using Method 3630C will normally be necessary. Protocols for verification of analyte identities should be developed when Method 8310 is used.

    10.2.4     Polycyclic aromatic hydrocarbons by supercritical fluid extraction
PAHs / supercritical fluid extraction (SFE)