## Abstract Real and imaganiry parts of complex dielectric constant of dilute solutions of DNA in 10^β3^__M__ NaCl with molecular weight ranging from 0.4 Γ 10^6^ to 4 Γ 10^6^ were measured at frequencies from 0.2 Hz to 30 kHz. Dielectric increments ΞΞ΅ were obtained from ColeβCole plots and relaxati
Dielectric behaviour of frozen DNA in solution
β Scribed by Camelia Gabriel; Edward Grant
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 103 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0197-8462
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β¦ Synopsis
In this article, measurements are reported on ice and frozen DNA solutions between 100 Hz-10 MHz. Pure ice is shown to exhibit single relaxation behaviour, which confirms previous work taken over a more restricted frequency range. The frozen DNA solution displays double-dispersion behaviour. One dispersion centred around 3 kHz is due to a defect mechanism while the other, centred around 2 MHz, may be attributed to counterion flow through the water immediately adjacent to the DNA molecule.
π SIMILAR VOLUMES
The dielectric properties of aqueous solutions of DNA were measured at frequencies ranging from 0.1 to 12 GHz. The results are analyzed using the Maxwell mixture theory and yield a value for the hydration of the DNA of about 0.4 g/g, which is in the range ohserved in other investigations. No evidenc
## Synopsis T h e effects of salts (NaCI, I K l , Me4NCI, AgNO:!, MgCI?, ('uC'l2. anti Mn('l2) ;ind dyes (acridine orange and methylene blue) on the low-t'requency dielectric relaxation (0.1 Hz-30 kHz) of dilute aqueous solutions of DNA were investigated with varying salt or dye concentrations. Bo
The dielectric properties of sonicated calf-thymus DNA sodium salt in aqueous sclutions have been studied in the frequency range from 40 MHz to 2 GHz by time domain spectroscopy (TDS). A dielectric dispersion not previously reported was found, which has a characteristic frequency of about 150 MHz. A
The complex dielectric constant of collagen in aqueous solutions (polymer concentration, C, = 0.02-0.2%) was measured a t 10Β°C in the frequency range from 3 Hz to 30 kHz. The loss peak for C, = 0.02% is located a t 90 Hz and the dielectric relaxation time rn is estimated to be 1.8 f 0.3 msec. The TL