Document ID: chunk:federal_register_of_legislation:F2013C00288:reg:3545a
Version: federal_register_of_legislation:F2013C00288
Segment Type: reg
Provision Reference: reg 3545A
Character Range: 820186–821240

3545A                                  Pressurised fluid extraction (PFE) using:
                                       dichloromethane/acetone (1:1)
                                       or
                                       hexane/acetone (1:1).
CRC CARE TPH TECHNICAL WORKING GROUP   End-over-end tumbling/shaking using:
                                       dichloromethane/acetone (1:1)

                                       This procedure, specified for TRH, has evolved from work carried out by CRC CARE (2009). Although all components of it are in common use, no validation data are currently available for the entire method.

* Ensure samples do not overheat.

The solvent system chosen should be shown to give optimum, reproducible recovery of analytes spiked into the particular matrix (soil type) under test.

10.2.8.3     Extract clean-up
(Recommended when there is significant amount of non-petroleum hydrocarbon interferences, to avoid reporting false positive results.)

The table below lists the specified US EPA SW-846 methods.