Method 5012


This method is for the determination of EPN. The sample is collected on glass fiber filters, desorbed in 15 mL isooctane, followed by GC analysis with flame photometric detection. The working range is 0.05 to 1.5 mg/m³ EPN for 120-L air samples. Malathion and Parathion have also been determined by this procedure. Note: This method replaces Method S285.

(NIOSH Issue 2: 15 August 1994)


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Method Data

Hold Times, Preservatives, Preps, Collection, Analytical & Documentation
Holding Time:   At least 7 days @ 25 °C.
Preservatives:   Store at room temperature.
Required Preps:   Glass fiber filter, 37-mm.
Collection Method:   Glass fiber filter: 15L - 700L @ 1-2L/min.
Analytical Methodology:   GC/FPD
Documentation:   5012

Analyte List*

Analyte Formula CAS Number Detection Limit

* The analytes and detection limits listed for each method represent the typical detection limits and analytes reported for that particular method. Keep in mind that analyte lists may vary from laboratory to laboratory. Detection limits may also vary from lab to lab and are dependent upon the sample size, matrix, and any interferences that may be present in the sample.