Comparison of different fibers, J. Chromatogr. Partition coefficients and retention indices in OV-101-OV-25, OV-101-Carbowax 20M and OV-225-SP-2340 mixtures, J. ; Kuz'menko, T.e. A, 903, 2000, 117-143. ass: Standard polar; Column diameter: 0.32 mm; Column length: 60 m; Column type: Capillary; Heat rate: 2 K/min; Start T: 65 C; End T: 250 C; End time: 60 min; Start time: 10 min; CAS no: 71363; Active phase: AT-Wax; Carrier gas: He; Phase thickness: 0.25 um; Data type: Linear RI; Authors: Pino, J.A. Chem. Chromatogr., 472, 1989, 129-143. ass: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; Heat rate: 12 K/min; Start T: 0 C; End T: 250 C; Start time: 12 min; CAS no: 71363; Active phase: SE-54; Carrier gas: He; Phase thickness: 0.25 um; Data type: Kovats RI; Authors: Rembold, H.; Wallner, P.; Nitz, S.; Kollmannsberger, H.; Drawert, F., Volatile components of chickpea (Cicer arietinum L.) seed, J. Agric. Chem. Nonpolar bonds: The electronegativity values are equal or nearly equal. Kalecik karasi grape, J. Inst. golden crispy, J. Agric. Separation of Unsaturated Alcohols and Their Acetyl and Haloacetyl Derivatives on Capillary Columns Coated with SE-30 and OV-351, J. Technol., 75(936), 2003, 47-53. ass: Standard non-polar; Column diameter: 0.32 mm; Column length: 60 m; Column type: Capillary; Heat rate: 3 K/min; Start T: 60 C; End T: 280 C; End time: 60 min; Start time: 10 min; CAS no: 71363; Active phase: CP Sil 5 CB; Carrier gas: He; Phase thickness: 0.25 um; Data type: Linear RI; Authors: Pino, J.; Almora, K.; Marbot, R., Volatile components of papaya (Carica papaya L., maradol variety) fruit, Flavour Fragr. Another reason is that the hydrogen-carbon bonds are nonpolar because of nearly the same electronegativity. If you look at pictures of polar and nonpolar molecules, they vary in symmetry. Food Chem., 50, 2002, 5146-5148. ass: Standard polar; Column diameter: 0.32 mm; Column length: 60 m; Column type: Capillary; Heat rate: 3 K/min; Start T: 45 C; End T: 300 C; End time: 20 min; Start time: 3 min; CAS no: 71363; Active phase: Carbowax 20M; Carrier gas: He; Phase thickness: 0.425 um; Data type: Linear RI; Authors: Mondello, L.; Dugo, P.; Basile, A.; Dugo, G., Interactive use of linear retention indices, on polar and apolar columns, with a MS-library for reliable identification of complex mixtures, J. Microcolumn Sep., 7(6), 1995, 581-591. ass: Standard polar; Column type: Packed; Heat rate: 4.6 K/min; Start T: 75 C; End T: 228 C; CAS no: 71363; Active phase: Carbowax 20M; Substrate: Celite 545; Data type: Linear RI; Authors: van den Dool, H.; Kratz, P. Dec., A generalization of the retention index system including linear temperature programmed gas-liquid partition chromatography, J. ChemSpider ID 7566. Sometimes polar is used in contrast to charged, to mean molecules or groups that are neutral overall but have regions that are partially plus or minus. A completely nonpolar bond occurs when the electronegativities are identical and therefore possess a difference of zero. ; Echeverria, G., Multivariate analysis of modifications in biosynthesis of volatile compounds after CA storage of 'Fuji' apples, Postharvest Biol. "Is CH3F polar or nonpolar?", to answer this question, we need a detailed analysis of the polarity of the CH3F molecule. ; Marbot, R.; Vazquez, C., Characterization of volatiles in Loquat fruit (Eriobotrya japonica Lindl. ; Samusenko, A.L., Method for prediction of the ability of analyte for self-association in pure liquid, 2000. class: Standard non-polar; Column diameter: 0.2 mm; Column length: 100 m; Column type: Capillary; Description: 5C(10min)=>5C/min=>50C(48min)=>1.5C/min=>195C(91min); CAS no: 71363; Active phase: Petrocol DH-100; Carrier gas: He; Data type: Kovats RI; Authors: Haagen-Smit Laboratory, Procedure for the detailed hydrocarbon analysis of gasolines by single column high efficiency (capillary) column gas chromatography, SOP NO.

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