Determination of DNA by Rayleigh light scattering enhancement of molecular "light switches"

被引：16

作者：

Chen, F

Huang, JP

Ai, XP

He, ZK ^{[1
]}

机构：

[1] Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430072, Peoples R China

[2] Hubei Agr Coll, Dept Environm Engn, Jinzhou 434025, Peoples R China

来源：

ANALYST | 2003年 / 128卷 / 12期

关键词：

D O I：

10.1039/b309625d

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Base on the enhancement of Rayleigh light scattering signals of molecular "light switches" by DNA under acidic condition, a sensitive and convenient method for DNA determination was proposed. The experiments indicated that, under optimum conditions, good linear relationships were obtained between the Rayleigh light scattering intensity and the concentration of nucleic acids. The detect limits of calf thymus DNA (ctDNA) were 13.0 ng ml(-1), 4.2 ng ml(-1), 51.5 ng ml(-1) and 3.0 ng ml(-1) with four "light switches", respectively. Plasmid DNA extracted from Bacillus subtilis were determined by the proposed method with satisfactory results, and the recovery rates of calf thymus DNA were in the range of 94.6 - 110.7%.

引用

页码：1462 / 1466

页数：5

共 36 条

[1] STUDIES ON INTERACTION OF ANTHRACYCLINE ANTIBIOTICS AND DEOXYRIBONUCLEIC-ACID - EQUILIBRIUM BINDING-STUDIES ON INTERACTION OF DAUNOMYCIN WITH DEOXYRIBONUCLEIC-ACID [J].