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巧妙回收钠渣一法
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作者 吴涤尘 《化学教学》 CAS 北大核心 1996年第1期9-10,共2页
巧妙回收钠渣一法江苏镇江中学(212017)吴涤尘金属钠长期浸泡在煤油中,表面形成一层黄色化合物.教学中每次取用金属钠时,都须削去表层,若干年累积,实验室便有了一小批削下的钠渣.钠渣中夹有一些金属钠,处理不当易造成事... 巧妙回收钠渣一法江苏镇江中学(212017)吴涤尘金属钠长期浸泡在煤油中,表面形成一层黄色化合物.教学中每次取用金属钠时,都须削去表层,若干年累积,实验室便有了一小批削下的钠渣.钠渣中夹有一些金属钠,处理不当易造成事故.现介绍一种安全简易回收钠渣中金... 展开更多
关键词 钠渣 粒状金属钠 学生分组实验 江苏镇江 黄色化合物 钠与水反应 静止冷却 残余煤 分批处理 剧烈搅拌
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Chromatographic fingerprint analysis of Fructus Aurantii Immaturus by HPLC-DAD and chemometric methods 被引量:4
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作者 徐小娜 蒋军辉 +3 位作者 梁逸曾 李晓如 易伦朝 成金乐 《Journal of Central South University》 SCIE EI CAS 2011年第2期353-360,共8页
An efficient method for quality control of Fructus Aurantii Immaturus (FAI),a famous traditional Chinese medicine (TCM) was established. A simple and reliable high-performance liquid chromatography-photodiode array de... An efficient method for quality control of Fructus Aurantii Immaturus (FAI),a famous traditional Chinese medicine (TCM) was established. A simple and reliable high-performance liquid chromatography-photodiode array detector (HPLC-DAD) procedure coupled with chemometric methods was developed for fingerprint analysis,qualitative analysis and quantitative determination of this herb. In qualitative and quantitative analyses,heuristic evolving latent projection (HELP) method was employed to resolve the overlapping peaks of the tested samples. Two bioactive components,namely hesperidin and naringin,are confirmed and determined,together with four flavonoids compounds tentatively identified including two new ones. From fingerprint analysis,the fingerprint data were processed with correlation coefficients for quantitative expression of their similarity and dissimilarity. The developed method based on an integration of chromatographic fingerprint and quantitative analysis is scientific,and the obtained results can be applied to the quality control of herb medicine. 展开更多
关键词 FINGERPRINT quality control Fructus Aurantii Immaturus high-performance liquid chromatography heuristic evolvinglatent projection method HESPERIDIN NARINGIN
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