High resolution chemically bonded fused-silica capillary gas chromatography of organochlorine insecticides and related compounds in arable soil samples
✍ Scribed by Suzuki, M. ;Morimoto, M.
- Publisher
- John Wiley and Sons
- Year
- 1986
- Tongue
- English
- Weight
- 488 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0935-6304
No coin nor oath required. For personal study only.
✦ Synopsis
Table 4 Some examples demonstrating prediction of the molecular structures from mass spectra, fluorescence spectra, and TLC fractionation. GC peak No. 1 2 3 Molecular weight 179 179 193 Fluorescence Emission max. 370 nrn 365 370 nm Assignment phenanthrene phenanthrene phenanthrene spectrum type type type TLC fraction No. 3a' '$b) 1 C' Nitrogen atom moderately not hindered most highly hindered at all hindered Possible structures a)Rt= 0.50 to 0.66, b)Rt= 0.31 to 0.50, ')Rf= 0.77 to 1.00.
around the nitrogen atom. As GCpeakNo. 2 is found mainly in the lowest Rf fraction, its nitrogen atom should be least hindered in the same manner as isoquinoline. These results lead to only two possibilities: benzo[fJisoquinoline and benzo[h]isoquinoline. According to the similar way of speculation, GC peak No. 3 can be considered to be most highly hindered phenanthrene type; the possible molecular structures are indicated in the bottom column in Table 4.
References