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研究了环丙沙星在０．１０ｍｏｌ／ＬＮＨ４Ｃｌ（ｐＨ６．０）底液中的二阶导数阴极波，建立了极谱分析法，该法的线性范围为２５～２５００ｎｇ／ｍＬ，检测限为５．９ｎｇ／ｍＬ，六次重复实验的ＲＳＤ为４．７％。考察了人体内微量物质对Ｉｐ”的影响。该法用于盐酸环丙沙星药片含量分析，结果令人满意。
The second order derivative cathodic wave of ciprofloxacin in 0.10 mol / L NH4Cl (pH6.0) was studied. The polarographic analysis was established. The linear range was 25-2500 ng / mL and the detection limit was 5 .9ng / mL, RSD of six replicate experiments was 4.7%. The effect of trace substances in human body on Ip "was investigated.The method was applied to the content analysis of ciprofloxacin hydrochloride tablets with satisfactory results.