Document ID: chunk:federal_register_of_legislation:F2013C00288:reg:3660b
Version: federal_register_of_legislation:F2013C00288
Segment Type: reg
Provision Reference: reg 3660B
Character Range: 806760–808359

3660B   Sulfur clean-up if necessary.

10.2.2.3     Extract analysis
      8121    GC/ECD
(P)   8270D   GC/MS

    10.2.3     Polycyclic aromatic hydrocarbons by solvent extraction

10.2.3.1     Scope and application
This method is applicable but not limited to analysis of the following polycyclic aromatic hydrocarbons (PAHs):
Naphthalene    Anthracene    Benzo(k)fluoranthene
Acenaphthylene   Fluoranthene    Benzo(a)pyrene
Acenaphthene    Pyrene     Dibenz(a,h)anthracene
Fluorene    Benzo(a)anthracene   Benzo(ghi)perylene
Phenanthrene    Chrysene    Indeno(123-cd)pyrene
Benzo(b)fluoranthene

10.2.3.2     Sample extraction
The tables below list the specified US EPA SW-846 methods.

3540 C  Soxhlet extraction using:
        acetone/hexane (1:1)
        or
        dichloromethane/acetone (1:1)
3550 C  Ultrasonic extraction* using:
        a. for low concentration (individual compounds <20 mg/kg):
        dichloromethane
        or
        dichloromethane/acetone (1:1)
        or
        hexane/acetone (1:1)
        or
        methyl tertiary-butyl ether
        or
        methyl tertiary-butyl ether/methanol (2:1).

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

        Analysts should determine an appropriate concentration limit and ensure that results are based on sample concentrations that do not exceed the instrument range.

        b. for high concentration (individual compounds >20 mg/kg:
        dichloromethane.

* Ensure samples do not overheat.