Method 5002

Warfarin by HPLC-UV

This method is for the determination of warfarin. The sample is collected on 1-µm PTFE membranes, extracted in 5mL methanol, and analyzed by HPLC with ultraviolet detection. The working range is 0.05 to 0.5 mg/m³ for a 400-L air sample. Note: This is P&CAM 313 in a new format.

(NIOSH Issue 2: 15 August 1994)


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Method Data

Hold Times, Preservatives, Preps, Collection, Analytical & Documentation
Holding Time:   93% recovery after 7 days @ 25 °C.
Preservatives:   Store at room temperature.
Required Preps:   1-µm PTFE filter; 37-mm diameter.
Collection Method:   1-µm PTFE filter; 200L- 1000L @ 1 - 4 L/min.
Analytical Methodology:   HPLC/UV
Documentation:   5002

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.