Method 39

Pentachlorophenol by HPLC/UV

This air sampling procedure for pentachlorophenol (PCP) uses two laboratory prepared XAD-7 sampling tubes connected in series. A small glass fiber disc is placed ahead of the resin bed of the front tube to trap any aerosols present in the air. The second tube serves as a backup section in the unlikely event of breakthrough. Samples are collected by drawing a known volume of air through two specially prepared XAD-7 adsorbent tubes which are connected in series. Following desorption with methanol the samples are analyzed by high performance liquid chromatography with ultraviolet (UV) detection.



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Method Data

Hold Times, Preservatives, Preps, Collection, Analytical & Documentation
Holding Time:   Recovery remained above 90% after 19 days of storage @ -5°C and 25°C.
Preservatives:   Keep refrigerated or at ambient temperature.
Required Preps:   Two XAD-7 resin glass tubes packed with 175mg; 5cm x 8mm OD x 6mm ID. First tube contains 8mm glass fiber filter disk to trap aerosols of the analyte. A third glass tube identical to backup section is placed ahead of front section to trap volatile PCP.
Collection Method:   Solid sorbent XAD-7 tubes: 48L @ 0.2L/min.
Analytical Methodology:   HPLC-UV
Documentation:   039

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.