On the relative merits of peak area and peak height measurement in electrothermal atomic absorption spectrometryC-13 NMRP-31 NMRMONOPHOSPHACROWNETHERSDIPHOSPHACROWN ETHERSNot Availabledoi:10.1016/0584-8547(93)80052-VPeter S. DoidgeSpectrochimica Acta Part B Atomic Spectroscopy...
Integration of the compound chromatogram (summation of all compound related ions) was used for determination of the peak area for QTOF-LCMS. The UV signal at 230 nm and the CAD and FID chromatograms were integrated without further data processing. A linear regression analysis was used to ...
Various molar ratios of I and II were then mixed with glycine, and the resulting peak area ratios of II to the area of the alpha and the carbonyl carbons of glycine was linearly related to the relative proportion of II in the mixture.doi:solid-state nuclear magnetic resonance (NMR)...
Quantitation of the relative amounts of anhydrous carbamazepine (C 15 H 12 N 2 O) and carbamazepine dihydrate (C 15 H 12 N 2 O · 2H 2 O) in a mixture by solid-state nuclear magnetic resonance (NMR). Pharm. Res. 7 :184–187 (1990)....
31P{1H} NMR (121 MHz CD2Cl2):δ 72.09 (d, JRhP = 200 Hz, 2P). 19F{1H} NMR (282 MHz CD2Cl2):δ-61.36 or −61.01* (s (C6H5CF3), 3F), −62.84 (s (BArF4), 24F) *ambiguous to which peak is 6 and which is from 9. ESI–MS: [M+] m/z = 567.21, [M+] calc...
In recent years, Saturation Transfer Difference NMR (STD NMR) has been proven to be a powerful and versatile ligand-based NMR technique to elucidate crucial aspects in the investigation of protein-ligand complexes. Novel STD NMR approaches relying on “multi-frequency” irradiation have enabled us ...
Table 1. The relative percentage of the area of peak of M. spicata EO constituents. Table 2. The relative percentage of the area of peak M. longifolia EO constituents. 2.3. Effects of EOs on Tomato Growth Parameters Tomato seedlings, treated with the highest concentrations (1.0% and 1.25...
Male fertility, as manifest by the quantity and progressive motility of spermatozoa, is negatively impacted by obesity, dyslipidaemia and metabolic disease. However, the relative distribution of lipids in spermatozoa and the two compartments which supply
With this reagent, the base peak chromatogram of the reaction mixture was dominated by multiple degradation products rather than by the expected MGO derivatives. Thus, the only intermediate response of the main derivative (m/z 296) and the corresponding high variance of this species may be the ...
(shown in the right of the ordinate) indicates the peak area size of a compound. Darker band indicates a larger peak area. Serial numbers of compounds (shown on the ordinate) were sorted by the retention time of all compounds identified in each sample, and the larger the compound number, ...