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本文报道了紫外分光光度法测定牙周病人龈沟液中甲硝唑的浓度，具有简便、快速、准确等优点。测定波长为３１９ｎｍ，在２～２０μｇ／ｍｌ范围内线性关系良好，相关系数ｒ＝０．９９９９，平均回收率为１００．８４％。
This paper reports the determination of metronidazole concentration in gingival crevicular fluid of patients with periodontal disease by UV spectrophotometry, which is simple, rapid and accurate. The determination wavelength was 319nm with a good linearity in the range of 2 ~ 20μg / ml. The correlation coefficient was 0.9999 with the average recovery of 100.84%.