WebElution characteristics using Bio-Beads SX-3 gel and a toluene-ethyl acetate (1+3) elution solvent were determined for 16 nonionic chlorinated pesticides, 3 polychlorinated biphenyls (PCBs), 14 chlorophenoxy herbicide esters, and 7 organophosphate insecticides. Elution patterns for vegetable and animal lipids were also studied. WebJun 9, 1995 · Gel permeation chromatography was per- formed on a 500 x 8 mm I.D. column filled with Bio Beads SX-3, 200-400 mesh (Bio-Rad, Rich- mond, CA, USA). Mobile phases consisting of cyclohexane-chloroform (1:1, 3:2 and 4:1, v/v) were tested. The flow-rate was 0.6 ml/min and a 2-ml sample loop was used. 2.3.
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Webchromatography. Bio-Beads SX-3 beads were used in the column with the dimension of 50 cm x 1.5 cm. The employed solvent was a mixture of cyclohexane and ethyl acetate in a 1:1 ratio (volume proportion). The fluxion was 2 cm3/min. The preliminary fraction with the volume of 60 cm3 was discarded. The next fraction of 60 cm3, containing PAHs, was ... WebNov 15, 2024 · Silica gel (35–75 mesh) or bonded C-18 silica gel (35–75 mesh), Bio-Beads SX-3 were used for column chromatography, and precoated silica gel GF 254 plates were used for TLC and were revealed by exposure to I 2 vapors or heating the plates sprayed with 5% H 2 SO 4 in EtOH. All solvents used were either spectral grade or were distilled … dick\\u0027s sporting goods ann arbor mi