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- direct determination of oxygen 氧的直接测定法
- A method for direct determination of cerium dioxide content is studied. 介绍了一种直接测定氧化铈含量的新方法。
- Advantage is taken of the reducibility of oxygen in the polarographic determination of dissolved oxygen. 在极谱测定溶解氧，则利用了氧还原性这个优点。
- The direct determination of micro gold and palladium in the electroplating sludge using ICP-AES was studied. 研究了电感耦合等离子体-原子发射光谱(ICP-AES)直接测定电镀污泥中微量金、钯的分析方法。
- A method is described in detail for direct determination of MnO, ZnO and Fe2O3contents in manganese-zinc ferrites by EDXRF analysis. 用EDXRF法直接测定锰锌铁氧体中MnO、ZnO和Fe2O3含量是采用软、硬件相结合的办法，成功地分解MilK和FeK重迭峰，并对特定基体效应提出具体对策。
- A method of simultaneous and direct determination of Cu, Mg, Zn, Mn, Cd, Ni, Al and Fe in the normal and dead leaves of grape by ICP is reported. 用电感耦合等离子体 (ICP)原子发射光谱法直接测定美国黑提葡萄的正常叶和枯叶中Cu、Mg、Zn、Mn、Cd、Ni、Al、Fe八种元素的含量 .
- The possibility for the direct determination of norfloxacin content in body fluid and drug by the luminescence of europium complex is discussed. 探讨了该体系在氟哌酸药物含量测定中应用的可能性。
- There was a shortage of oxygen at the top of the mountain. 山顶上缺氧。
- A new method for direct determination of trace silver in solid rock or mineral samples by graphite fumace AAS is developed. 用石墨炉固体进样技术直接测定岩矿样品中微量银,用正交设计法进行测试参数的选择;
- A method was established for the direct determination of fatty acid polyglycol ester in DTY finish by infrared spectrometry. 建立了红外光谱法直接测定DTY油剂中脂肪酸聚乙二醇酯含量的分析方法。
- It was studied that the direct determination of total chromium in water and wastewater by flame atomic absorption spectrophotometry. 研究了用火焰原子吸收分光光度法直接测定水和废水中的总铬。
- A molecule of water consists of two atoms of hydrogen and one atom of oxygen. 水分子含有两个氢原子和一个氧原子。
- The dispersion state and energy property of MoS 2/Mg(Al)O were characterized by determination of adsorption capacity of oxygen, adsorption heat of thiophene and reaction dynamics parameters. 通过对氧吸附量、吸附热及反应动力学参数的测定 ;表征了MoS2 在Mg(Al)O上的分散状态及能量性质 .
- The new method has been applied to the direct determination of beryllium in geological samples of beryl, hsianghualite (raw ore) etc. with satisfactory results. 方法选择性好,用于绿柱石、香花石等地质试样中铍的直接测定,结果满意。
- Water is said to consist of oxygen and hydrogen. 据说水由氢气和氧合成。
- Abstract:This paper presents a method for the direct determination of intact glucosinolates in rapeseed by reversed phase ion pair liquid chromatography (RILC). 用反相离子对色谱法直接测定油菜籽(饼)中原始硫苷成分,在样品预处理中加入抗氧化剂以防止吲哚类硫苷的氧化分解。
- Water is made up of oxygen and hydrogen. 水是由氢和氧构成的。
- Water is said to consist of oxygen and hydrogen . 据说水由氢气和氧合成。
- A kinetic method for the direct determination of CO_2 in gaseous phase is proposed, based on fading the phenolphthalein when CO_2 dissolves in dilute aqueous solution of NaOH. 本文基于气相中的二氧化碳在稀氢氧化钠-酚酞溶液中的溶解而使酚酞逐渐褪色的动力学行为提出了一种直接测定气相中微量二氧化碳的动力学分析法。
- A method for direct determination of trace 14 rare earch elements in cerium oxide (99.95%) by inductively coupled plasma-atomic emission spectrometry has been studied. 本文研究了电感耦合等离子体原子发射光谱直接测定99.;95%25氧化铈中14种稀土杂质的方法。
