EPA Method 3542


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EPA Method 3542:
EXTRACTION OF SEMIVOLATILE ANALYTES COLLECTED USING METHOD 0010 (MODIFIED METHOD 5 SAMPLING TRAIN)

Summary:
Samples generated by the Method 0010 Sampling Train are separated into six parts: a particulate matter filter, a front half rinse, condenser rinse and rinse of all sampling train components located between the filter and the sorbent module, sorbent trap section of the organic module, any condensate and condensate rinse, and silica gel.

Scope:
Although this sample preparation technique is intended primarily for gas chromatography/mass spectrometric (GC/MS) analysis following Method 8270, the extracts prepared according to this method may be used with other analytical methods. The Method 0010 sampling train collects semivolatile organic compounds with boiling points above 100EC. Some of these semivolatile organic compounds may not be amenable to gas chromatography and will require the application of high performance liquid chromatography (HPLC) for quantitative analysis. The use of HPLC coupled with mass spectrometry (HPLC/MS) is an analytical technique that may also be applied. A solvent exchange from methylene chloride to a more polar solvent such as acetonitrile or extraction with a solvent other than methylene chloride will probably be required for successful application of HPLC techniques. Some semivolatile analytes may require derivatization for successful GC/MS analysis.

Report Number:
SW-846 Ch 4.2.1

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Examples:  8260
TO-15

Examples:  Dioxin
Mercury
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