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- We have selected two methods to determine nicotine content in tobacco.One method international standard method, is the UV-spectrophotometric method. 采用两种方法测定了烟叶中烟碱的含量,一种是紫外分光光度法,即国际标准法,另一种是非水滴定法。
- The RSD for internal standard method is 2.71%, and the recoveries are in the range of 98.4%-102.1%. 研究了氟谱测定的前处理和共存离子的干扰,以外标法和内标法进行定量分析。
- Gas chromatographic internal standard method was considered to determine purity for 1,1-dimethylhydrine(UDMH)instead of the standard working curve method. 研究了气相色谱内标法代替常规的标准工作曲线法测定偏二甲肼纯度(UDMH)。
- Besides, quantitation analysis of involatile compositions in beer could be done by internal standard method or by external standard method. 还可用内标法和外标法对啤酒中的不挥发组分进行定量检测分析。
- We use internal standard method to seperate and test the a.i.of cyanazine 40 SC,and the internal standard is dicyclohexyl phthalate. 采用气相色谱法,内标物为邻苯二甲酸二环己酯,用内标法对40%25氰草津水悬浮剂的有效成分进行分离和检验。
- Internal standard method for determinating the contents of DHA and EPA in fish oil, fatty acid and fatty acid ethyl ester? 内标法测定鱼油及脂肪酸与脂肪酸乙酯中 DHA 和 EPA 含量
- An internal standard method by ICP-AES for direct and quick determination of Nd, Lu, Er, Ho and Ce in mono or dual doped laser crystals YAP has heed adopted. 本文采用磷酸溶解样品,在不分离基体的情况下,用ICP-AES内标法直接、快速测定YAP激光晶体中单掺或双掺钕、镥、铒、钬、铈的含量;
- The analysis of the trace flavouring components in liquor by gas chromatography is usually done by FID detector with quantification by internal standard method. 气相色谱法分析白酒中的微量香气成分,一般采用FID检测器,以内标法定量。
- METHODS: GC Internal standard method was used to determine curcumol in Baofukang Suppository with capillary column. 方法:采用毛细管柱气相色谱内标法测定保妇康中莪术醇的含量。
- The method for determination of amino acids in feedstuffs by high performance liquid chromatography(HPLC) was improved by simplifing sample preparation,using internal standard method performing. 对高效液相色谱(HPLC)测定饲料中氨基酸含量的方法进行了改进。
- Abstract he variations of the essential oils in Acorus calamus and their major compositions with seasons and producingareas were investigated by steam distillation and internal standard method. 摘要对东北产菖蒲的根、根茎及叶三部分挥发油及挥发油的主要成分的含量随季节、产地的变化情况进行了考察。
- Using internal standard method, the content of trimethylacetic acid in its synthetic fluid prepared by pressure catalytic process from isobutene and carbon monoxide was measured with packed column. 采用内标法,利用填充柱测定了由异丁烯和一氧化碳经加压催化合成三甲基乙酸工艺的合成液中的三甲基乙酸。
- A determination rnethod of Etoc in Mosquitourepellent mat with gas chrornatography was established.The quantitative analysis of etoc was conducted by GC using FID and internal standard method. 叙述了采用气相色谱法,以FID检测器和内标法定量测定电热蚊香片中益多克的含量。
- The components of methylhydracyclosiloxane were analyzed quantificationally by superficial unitary method and internal standard method,taking n decane as internal standard substance. 分别采用面积归一法和内标法(正癸烷为内标物)对甲基氢混合环硅氧烷馏出液和釜料中各组分进行定量分析。
- The kilogram is the international standard of weight. 公斤是国际通用的重量标准。
- METHODS The concentration of chloramphenicol,metronidazole and borneolum in the compound chloramphenicol vaginal suppository was determined by HPLC and gas chromatography internal standard method. 方法复方氯霉素阴道栓中氯霉素、甲硝唑含量采用高效液相色谱法测定;冰片含量采用气相色谱内标法测定;
- The kilometreis the international standard. 千米是国际通用的标准。
- It means "International Standard Serial Number". 它的意思是“国际标准期刊刊号”。
- internal standard method for gas chromatography 气相色谱内标法
- It conforms to the international standard. 它符合国际比赛标准要求。