Method TO-9A

Dioxins/Furans from PUF by HRGC/HRMS


This method is for the quantitative determination of polyhalogentated dibenzo-p-dioxins and dibenzofurans (PHDDs/PHDFs) in ambient air, which include the polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDDs/PCDFs), polybrominated dibenzo-p-dioxins and dibenzofurans (PBDDs/PBDFs), and bromo/chloro dibenzo-p-dioxins and dibenzofurans (BCDDs/BCDFs).  The method uses a high volume air sampler equipped with a quartz-fiber filter and polyurethane foam (PUF) adsorbent for sampling 325 to 400 m³ of ambient air in a 24 hour sampling period.  The samples are analyzed using  high resolution gas chromatography-high resolution mass spectrometry (HRGC/HRMS).  The analytical portion of this method is similar to SW-846 8290.

The most common use of the method is for the collection and analysis of polychlorinated dioxins and furans.


(EPA 600/4-89-017)

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Method Data

Hold Times, Preservatives, Preps, Collection, Analytical & Documentation
Holding Time:   The method specifies 7 days from collection to extraction.
Preservatives:   Keep samples at 4°C and protect them from light.
Required Preps:   Precleaned (soxhlet extracted) quartz fiber filter (102 mm) and PUFs (3 inch); PUFs are placed in glass cartridge and spiked with surrogate standards. Hold time for preps is 30 days; Field blanks are also required
Collection Method:   TO-9A
Analytical Methodology:   HRGC/HRMS by TO-9A
Documentation:   TO-9A

Analyte List*

Analyte Formula CAS Number Detection Limit
2,3,7,8-Tetrachloro-dibenzo-p-dioxin
1746-01-6
15
 pg
1,2,3,7,8,9-Hexachlorodibenzo-p-dioxin
19408-74-3
75
 pg
Octachlorodibenzo-p-dioxin
C12Cl8O2
3268-87-9
150
 pg
1,2,3,4,6,7,8-Heptachlorodibenzo-p-dioxin
35822-39-4
75
 pg
Octachlorodibenzofuran
39001-02-0
150
 pg
1,2,3,4,7,8-Hexachlorodibenzo-p-Dioxin
39227-28-6
75
 pg
1,2,3,7,8-Pentachlorodibenzo-p-Dioxin
40321-76-4
75
 pg
2,3,7,8-Tetrachlorodibenzofuran
C12H4Cl4O
51207-31-9
15
 pg
1,2,3,4,7,8,9-Heptachlorodibenzofuran
55673-89-7
75
 pg
2,3,4,7,8-Pentachlorodibenzofuran
57117-31-4
75
 pg
1,2,3,7,8-Pentachlorodibenzofuran
57117-41-6
75
 pg
1,2,3,6,7,8-Hexachlorodibenzofuran
57117-44-9
75
 pg
1,2,3,6,7,8-Hexachlorodibenzo-p-dioxin
57653-85-7
75
 pg
2,3,4,6,7,8-Hexachlorodibenzofuran
60851-34-5
75
 pg
1,2,3,4,6,7,8-Heptachlorodibenzofuran
67562-39-4
75
 pg
1,2,3,4,7,8-Hexachlorodibenzofuran
70648-26-9
75
 pg
1,2,3,7,8,9-Hexachlorodibenzofuran
72918-21-9
75
 pg
HpCDD, Total
 
HpCDF, Total
 
HxCDD, Total
 
HxCDF, Total
 
PeCDD, Total
 
PeCDF, Total
 
TCDD, Total
 
TCDF, Total
 

* 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.