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用二阶导数分光光度法测定鼻眼净滴鼻剂中的盐酸萘甲唑啉，可消除尼泊金乙酯的干扰，方法简便、准确。回收率为９８．５％（ｃυ＝０．４８％）。
Determination of naphazoline hydrochloride in nose nasal drops nasal drops by the second derivative spectrophotometry can eliminate the interference of ethyl paraben, the method is simple and accurate. The recovery was 98.5% (cυ = 0.48%).