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左氟沙星注射液的紫外分光光度法测定 被引量:24

Ultraviolet spectrophotometry of levofloxacin injection
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摘要 目的 :建立左氟沙星注射液的含量测定方法。方法 :采用紫外分光光度法测定 ,用 0 .1mol·L-1盐酸溶液作溶剂 ,测定波长为 2 93nm。结果 :在 2 .0~ 12 .0 μg·ml-1浓度范围内 ,线性关系良好 ,平均回收率为 10 0 .0 % ,RSD为 0 .3%。结论 :方法简便、快速。 OBJECTIVE:To establish a quantitative analysis method for levofloxacin injection.METHODS:Levofloxacin injection was determined in 0.1 mol·L -1 HCl by ultraviolet spectrophotometry.The wavelength of detection was 293 nm.RESULTS:The calibration curve was linear in the range from 2.0 ~ 12.0 μg·ml -1 with r= 0.9999 ,the average recovery and relative standard deviation were 100.0% and 0.3% respectively.CONCLUSIONS:The method was simple,rapid and accurate. KEY WORDS levofloxacin;injection;ultraviolet spectrophotometry妫澹? ad libitum cornsoybean diet with addition of 0 40%, 0 65%, 0 90% sulphur as(NH 4) 2SO 4 and 0 17%, 0 37%, 0 57% magnesium as MgO. WT5FZ Results: WT5BZ Addition of sulphur increased incidence of TD in 21 day old broiler chicks, which was reduced by addition of magnesium.Dietary electrolyte balance was correlated to incidence of TD negatively( WTBX r WTBZ =-0.825).Without influence on blood pH, addition of sulphur acidified the blood by decreasing concentration of base excess and HCO - 3 in the blood. Addition of magnesium alkalized the blood in the same way. Addition of sulphur decreased ACP activity in serum and growth plate and concentration of collagen in metaphysis. Addition of magnesium was beneficial to ACP activity, synthesis and catabolism of collagen in growth plate. WT5FZ Conclusion: WT5BZ Dietary electrolyte balance formulated by different levels of sulphur and magnesium can induce or control the incidence of TD by changing acid base balance of blood and degradation of collagen in growth plate.It is probably that the decreased catabolism, not the synthesis of collagen in growh plate accounts for the accumulation of TD cartilage. WT [WT5”FZ]
出处 《中国医院药学杂志》 CAS CSCD 北大核心 2000年第1期29-30,共2页 Chinese Journal of Hospital Pharmacy
关键词 左氟沙星 注射液 紫外分光光度法 broiler chicks tibial dyschondroplasia magnesium sulphur acidbase balance collagen
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