【摘要】 在硝酸介质中,DNA被高锰酸钾氧化能产生很强的化学发光,而且发光强度在一定的范围内与DNA的浓度呈线性关系,据此建立了流动注射化学发光测定DNA的新的分析方法。探讨了最佳的发光条件。测定的线性范围为20～100μg mL,检出限为6.2μg mL。进样频率为40次 h。该法应用于人体血清中DNA的测定。更多还原

【Abstract】 A new flow injection chemiluminescence （FI-CL） method for the determination of levodopa was established. This method was based on the enhancement of levodopa on the chemiluminescence reaction of luminol with ferricyanide. The concentration range of linear response was 5.0×10^-10～5.0×10^-8 g/mL. The detection limit was 1.2×10^-10 g/mL with a relative standard deviation of 2.9% for the determination of 5.0×10^-9 g/mL of levodopa （n=11）. The method was used to determine the content of levodopa in tablets with satisfactory results.更多还原