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Determination of biogenic halogenated methyl-phenyl ethers (halogenated anisoles) in the picogram m(-3) range in air.

Analytical and bioanalytical chemistry (1996-01-01)
U Führer, A Deissler, K Ballschmiter
ABSTRACT

Halogenated anisoles (methyl-phenyl ethers) appear to be ubiquitous organic trace compounds in the environment. An analytical method is presented for analyzing the altogether 134 congeners of chloro-, bromo- and mixed bromochloro-anisoles on an isomer-specific basis in air. High volume sampling (20 m(3) per hour) is carried out by adsorption, using a mixture of silica gel 60 and ENVI-Carb. The preseparation of the anisoles is achieved by NP-LC on Florisil (a magnesium silicate). The interference by volatile n-alkyl nitrates in the electron-capture detection can be avoided by a LC-preseparation on a carboneous phase. The isomer-specific separation and detection is performed by HRGC-ECD and HRGC-MS-SIM. A structure-specific systematic numbering of the 134 congeners of the chloro-, bromo- and bromochloro-anisoles is suggested. The retention data are given of 16 chloroanisoles, 10 bromoanisoles and 27 bromo-chloroanisoles on three stationary phases with different polarity.

MATERIALS
Product Number
Brand
Product Description

Supelco
Supel QuE, PSA/C18/ENVI-Carb Tube, pk of 50, AOAC® 2007.01
Supelco
Supel QuE, PSA/C18/ENVI-Carb Tube, pack of 100, AOAC® 2007.01
Sigma-Aldrich
2,3-Dichloroanisole, ≥97%
Supelco
Supel QuE, PSA/ENVI-Carb (EN) Cleanup Tube 2, pack of 100, suitable for EN 15662:2008 per BS
Supelco
Supel QuE, PSA/ENVI-Carb (EN) Cleanup Tube 1, pack of 100, suitable for EN 15662:2008 per BS
Supelco
Supel QuE, PSA/C18/ENVI-Carb Tube, pk of 50, AOAC® 2007.01, centrifuge tube volume 15 mL , Shaker Compatible
Supelco
Supel QuE, PSA/ENVI-Carb Tube 1, pk of 50, suitable for EN 15662:2008 per BS, centrifuge tube volume 15 mL , Shaker Compatible
Supelco
Supel QuE, PSA/ENVI-Carb Tube 2, pk of 50, suitable for EN 15662:2008 per BS, centrifuge tube volume 15 mL , Shaker Compatible