potassium borohydride
英
美
网络 硼氢化钾; 印度求购硼氢化钾; 四氢硼钾
双语例句
- This mathod is to transform mercury into mercury-hydride in a media of hydrochloric acid using potassium borohydride as a reducing agent.
在盐酸介质中，以硼氢化钾作还原剂，将汞转化为汞化氢。 - Method and results The instrument condition, sample disposal, acidity and concentration of potassium borohydride were optimized, and the limit of determination, determination range, precision and accuracy of the method were acquired.
方法选择了最佳的仪器条件，进行了样品处理方法及酸度、硼氢化钾浓度、检出限、线性范围、精密度、加标回收率等研究。结果本法线性关系砷为0~40ug/L，硒为0~80ug/L。 - The effect of potassium borohydride on ester and carboxylic acid reduction was introduced.
研究了硼氢化钾对酯和羧酸的还原作用。 - Methods: Carbonyl group was reducted with potassium borohydride in stead of zinc amalgam; the danshensu and its derivatives were acetylated.
方法：使用硼氢化钾代替锌汞齐还原羰基，通过乙酰化反应对丹参素及其衍生物进行结构修饰。 - The samples were treated by microwave digestion. In hydrochloric acid medium with thiourea-ascorbic acid as the pro-reducing agent and potassium borohydride as the hydriding agent, the contents of arsenic were determined by hydride generation-atomic fluorescence Spectrometry.
实验采用微波消解样品，以盐酸为测定介质，硫脲-抗坏血酸为预还原剂，硼氢化钾为氢化剂，用氢化物发生-原子荧光光谱法测定砷含量。 - β-nitrostyrene was used as a model compound of β-nitroolefines in the study of the selective reduction of carbon-carbon double bond with potassium borohydride.
为研究硼氢化钾还原α，β-不饱和硝基化合物时对于碳碳双键的选择性，以β-硝基苯乙烯为底物，考察了反应条件及烯键和苯环上取代基对于反应结果的影响。 - Based on consideration of economical problem, a synthetic route by sodium or potassium borohydride as reducing agent is put forward.
考虑到经济性问题，提出了由硼氢化钾或钠作为还原剂的合成路线。 - Results Poisonous benzene was changed into chloroform and the expensive sodium borohydride was replaced with potassium borohydride.
结果革除文献中用到的有毒溶剂苯，以硼氢化钾替代了价格贵且易潮解的硼氢化钠，降低了成本； - Thus, in a conical flask with small funnel, sample is decomposed by HNO_3-H_3PO_4-H_2O_2, using phosphoric acid of 20% as reaction medium, concentration of potassium borohydride is controlled at 2%.
以HNO3H3PO4H2O分解样品，选用20%的磷酸作反应介质；硼氢化钾浓度控制在2%。 - Fluorescence measurement is based on the reduction of arsenic by potassium borohydride and introduction of its gaseous hydride into the electrically heated silica tube.
荧光测量是建立在用硼氢化钾还原砷，并将砷的气体氢化物导入电加热石英管中原子化的基础上。 - The synthesis of new aroma chemicals by using potassium borohydride as a selective reductant is reported. It has the advantages of better selectivity, less side reactions, higher reaction rate, higher yield, mild reaction condition and easy processing.
本文介绍硼氢化钾作为选择性还原剂应用于新香料的合成，它具有反应单一、副反应少、反应速度快、产率高、反应条件温和、操作简便等优点。 - In the presence of potassium borohydride, sodium molybdate can catalyze the reduction of acetylene to ethylene.
在硼氢化钾存在的情况下，钼酸钠就能催化乙炔还原为乙烯的反应。 - Study on the Experiment of Ester and Carboxylic Acid Reduction with Potassium Borohydride
硼氢化钾对酯和羧酸的还原反应的研究 - The hydrogenation of terpineol to dihydroterpineol catalyzed by Raney Nickel modified by potassium borohydride was studied.
研究了以硼氢化钾修饰的雷尼镍催化剂催化松油醇加氢制备二氢松油醇的反应。 - Determination of Mercury in Coatings of Indoor Decorating and Refurbishing Materials by Potassium Borohydride Reduction-Atomic Fluorescence Spectrometry
硼氢化钾还原-原子荧光光谱法测定室内装饰装修用涂料中汞 - The treatment of raw sorbierite using potassium borohydride can decrease the content level of reducing sugar and raise the product quality.
使用硼氢化钾处理粗山梨醇，能够降低山梨醇的还原糖含量，提高了产品质量； - Zinc borohydride was prepared by the reaction of potassium borohydride and anhydrous zinc chloride.
其中硼氢化锌由硼氢化钾和无水氯化锌反应制得。 - The ketone was treated with reduction by using potassium borohydride and acetylation to 4-methyl-4-phenyl-2-pentyl acetate.
接着用硼氢化钾还原和乙酰化反应得4-甲基-4-苯基-2-戊醇乙酸酯。 - High hardness Ni B and Ni Mo B coatings are prepared by EN with potassium borohydride reducing agent.
通过化学镀方法制备高硬度NiB及NiMoB合金镀层。 - The Ni-B amorphous alloy catalyst prepared by reduction of nickel nitrate with a potassium borohydride aqueous solution was employed in the liquid-phase hydrogenation of halogenated nitrobenzene.
用化学还原法制备了NiB非晶态合金催化剂，并将其用于4种卤代硝基苯的液相加氢反应.采用X射线衍射和透射电子显微镜研究了催化剂的非晶性质。 - The effects of concentration of potassium borohydride, sodium dihydrogen phosphate, ferrous sulfate and ammonia water on deposition rate, composition, structure and morphology of iron-nickel-phosphorus-boron deposit were studied.
研究了镀液中各成分浓度如硼氢化钾、磷酸二氢钠、硫酸亚铁和氨水等对镀层沉积速率、成分、结构和形貌等的影响。 - Determination of Mercury Content in Human Milk by Cold Atomic Fluorescence Spectrometry with Potassium Borohydride Reduction
冷原子荧光光度法测定人奶中的汞&硼氢化钾直接还原法 - Application of potassium borohydride in the synthesis of aroma chemicals
硼氢化钾在新香料合成中的应用 - Selective Reduction of β-Nitrostyrene with Potassium Borohydride
硼氢化钾对β-硝基苯乙烯的选择性还原 - Spectrophotometric Determination of selenium in the vegetable food with potassium borohydride reduction
硼氢化钾还原-分光光度法测定植物性食物中的硒