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4'-Trichlorobiphenyl (= 2'
purified ion m/z 424 (heptamethyl)
Rugged and Safe“ ) products in comparison with classical clean-up methods - Easy to handle and time-saving procedure as well as no need for glassware (convenient and economical)
14-cis-eicosadienoate
Dimethyl modified silica phase for SPE
Retention gaps, CW (carbowax, polyethylene glycol), polar ICP-33N-5 4'-Trichlorobiphenyl (= 2'The retention gap technique in combination with on column injection allows concentration of a large sample volume in the capillary column. Retention gaps consist of uncoated (no stationary phase), deactivated fused silica capillary tubing. A retention gap must be inert without any noticeable retention (analytes are not retained). Carbowax (CW, polyethyleneglycol, polar) deactivated is suitable for direct aqueous injection. Improve peak shape by
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