Published May 2003 | Version v1
Journal article Metadata-only

Adsorption of lead(2) and cadmium(2) ions on the surface of a nitrocellulose membrane modified with denaturated deoxyribonucleic acid

Creators

  • 1. Kazanskij Gosudarstvennyj Univ., (Russian Federation)

Description

The adsorption of the lead(2) and cadmium(2) ions on the surface of the amperometric biosensor on the basis of the nitrocellulose membrane, modified with the denaturated DNA (d-DNA) is studied. It is established that by the combined adsorption of these ions, available in the mixture, the lead(2) ions are bound d-DNA molecules more efficiently in comparison with the cadmium(2) ions. The values of the constant of binding the lead(2) and cadmium(2) ions with the immobilized d-DNA constitute correspondingly (12.0±0.3)x105 M-1 and (0.6±0.2)x105 M-1

Abstract (Russian)

Изучена адсорбция ионов свинца(2) и кадмия(2) на поверхности амперометрического биосенсора на основе нитроцеллюлозной мембраны, модифицированной денатурированной ДНК (д-ДНК). Установлено, что при совместной адсорбции этих ионов, присустствующих в смеси, ионы свинца(2) связываются с молекулами д-ДНК более эффективно по сравнению с ионами кадмия(2). Значения константы связывания ионов свинца(2) и кадмия(2) с иммобилизированной д-ДНК составили соответственно (12.0±0.3)x105 M-1 и (0.6±0.2)x105 M-1

Additional details

Additional titles

Original title (Russian)
Adsorbtsiya ionov svintsa(2) i kadmiya(2) na poverkhnosti nitrotsellyuloznoj membrany, modifitsirovannoj denaturirovannoj dezoksiribonukleinovoj kislotoj

Publishing Information

Journal Title
Zhurnal Fizicheskoj Khimii
Journal Volume
77
Journal Issue
5
Journal Page Range
p. 890-894
ISSN
0044-4537
CODEN
ZFKHA9

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
36060597
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
ADSORPTION; ADSORPTION ISOTHERMS; AQUEOUS SOLUTIONS; CADMIUM COMPOUNDS; DISTRIBUTION FUNCTIONS; DNA; DNA ADDUCTS; MEMBRANES; NITROCELLULOSE; STABILITY
Descriptors DEC
ADDUCTS; CARBOHYDRATES; CELLULOSE ESTERS; CHEMICAL EXPLOSIVES; DISPERSIONS; ESTERS; EXPLOSIVES; FUNCTIONS; HOMOGENEOUS MIXTURES; ISOTHERMS; MIXTURES; NITRIC ACID ESTERS; NUCLEIC ACIDS; ORGANIC COMPOUNDS; POLYSACCHARIDES; SACCHARIDES; SOLUTIONS; SORPTION

Optional Information

Notes
17 refs., 3 figs.