This paper reports the spectral characteristic of resonance light scattering (RLS) system of catechol violet (PV)-cetyltrimethylammonium bromide (CTMAB)-nucleic acid. At pH 2.35, nucleic acid and CTMAB can cooperatively enhance the RLS intensity of PV and produce RLS with the maximum scattering peak located at 400 run. The enhanced RLS intensity is proportional to the nucleic acid concentration. Based on this phenomenon, ribonucleic acid (RNA) and deoxyribonucleic acid (DNA) can be determined. The linear ranges of yRNA and fsDNA are both 20similar to750 mug/L, the limits of detection are 1.4 mug/L yRNA and 8.7 mug/L fsDNA. A new method for determination of nucleic acid was established.
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页码:1352 / 1355
页数:4
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