查询词典 potassium

The total iron in iron ore was titrated by potassium permanganate standard solution with sodium diphenylamine sulfonate as indicator.

用HNO3-HF处理，硫-磷混酸溶解试样，在盐酸介质中，用二氯化锡－三氯化钛将Fe(上标 3+)还原为Fe(上标 2+)，以二苯胺磺酸钠为指示剂，以高锰酸钾标准溶液滴定铁矿石中的全铁量。

In the presence of the combination of sulphuric and phosphoric acid, with sodium diphenylamine sulfonate as the indicator, standard solution of potassium dichromate was used to titrate total iron value.

试样以盐酸溶解后，在酸性介质中，先以氯化亚锡将三价铁大部分还原为二价，然后在钨酸钠指示下，再以三氯化钛将剩余的三价铁还原为二价，过量的三氯化钛以重铬酸钾氧化消除干扰，在硫磷混合酸存在下，以二苯胺磺酸钠为指示剂，用重铬酸钾标准溶液滴定全铁量。

Was founded in 1993, after reorganization of assets in 2003 as "phosphide", more than 500 million fixed assets, the existing 150 staff, of whom technical staff of more than 20, are specializing in the production of phosphate (sodium pyrophosphate, disodium hydrogen phosphate, sodium hexametaphosphate, potassium dihydrogen phosphate, disodium hydrogen phosphate, trisodium phosphate) enterprise.

河南省焦作市磷化实业有限公司（原武陟县兴璋化工有限公司）建于1993年，后经2003年资产重组为"磷化"，公司固定资产500多万，现有职工150人，其中技术人员20多名，是专业生产磷酸盐（焦磷酸钠，磷酸氢二钠，六偏磷酸钠，磷酸二氢钾，磷酸氢二钠，磷酸三钠）企业。

When proceeding the research of drug identification by ultraviolet spectrophotometry, this paper adopts the approaches below: to identify Metronidazole Buccal Tablets and Potassium Sodium Dehydroandroan Drographolide Succinate by ulviolet maximum absorbent wavelength; to identify Metronidazole Disodium Phosphate for Injection by ulviolet maximum absorbent wavelength and minimum absorbent wavelength; to identify Ceftriaxone Sodium for Injection and Clarithromycin Tablets by retention time of high performance liquid chromatography- ultraviolet spectrophotometry.

通过测定紫外最大吸收波长λ_(max鉴别甲硝唑口颊片和炎琥宁、测定紫外最大吸收波长λ_(max和最小吸收波长λ_(min鉴别注射用甲硝唑磷酸二钠，结合高效液相色谱(high performance liquid chromatography-ultraviolet detector，HPLC-UV)中保留时间的测定鉴别注射用头孢曲松钠和克拉霉素片，本文建立了药物鉴别的紫外分光光度法。

The research indicates that:(1) detecting λmax (277nm) can identify Metronidazole Buccal Tablets prepared by Chongqing Medical College;(2) detecting λmax (321nm) and λmin (265nm) can identify Metronidazole Disodium Phosphate for Injection prepared by Chongqing Medical College;(3) detecting tr (6.7min) in HPLC-UV spectrum can identify Ceftriaxone Sodium for Injection prepared by Chongqing Keru Pharmacy Co.;(4) detecting tR (10.2min) 6.7min in HPLC-UV spectrum can identify Clarithromycin Tablets prepared by Harebin Yida Pharmacy Co.;(5) detecting λmax (254nm) can identify Potassium Sodium Dehydroandroan Drographolide Succinate prepared by Hong Kong Yaohen Co..

结果表明：①测定紫外最大吸收波长λ_(max277nm可鉴别重庆医科大学医药研究所制备的甲硝唑口颊片；②测定紫外最大吸收波长λ_(max321nm和最小吸收波长λ_(min265nm可鉴别重庆医科大学医药研究所制备的注射用甲硝唑磷酸二钠；③测定HPLC-UV中的保留时间(t_R6.7min)可鉴别重庆科瑞制药股份有限公司制备的注射用头孢曲松钠；④测定高效液相色谱的保留时间(t_R10.2min)可鉴别哈尔滨伊达制药厂提供的克拉霉素片；⑤测定紫外最大吸收波长(又max254nm)可鉴别香港耀恒公司提供的炎琉宁。

The method is characterized in that: mixture of macromolecular dihydric alcohol and a dihydroxybutyl-terminated polydimethylsiloxane is dehydrated, added with diisocyanate for reaction, then added with a bis propionic acid, a dihydric alcohol chain extender and a catalyst - dibutyl tin laurate, and is diluted by acrylic ester; temperature reduction and emulsion are performed on the mixture after reaction; chain extension reaction is performed in water by a multi-amine chain extender, and siloxane modified polyurethane dispersoid which contains acrylic ester monomer is prepared; and an initiator - potassium persulphate is added into the siloxane modified polyurethane dispersoid for emulsion polymerization.

特征是先将大分子二元醇与二端羟丁基聚二甲基硅氧烷的混合液脱水后加入二异氰酸酯，反应后加入二羟甲基丙酸、二元醇扩链剂和催化剂二月桂酸二丁基锡，并用丙烯酸酯进行稀释，反应后降温乳化，用多元胺扩链剂在水中进行扩链反应，得到含有丙烯酸酯单体的硅氧烷改性聚氨酯分散体，然后再通过加入引发剂过硫酸钾进行乳液聚合。

A copolymer emulsion used for air filter paper impregnation was studied, the emulsion was prepared by copolymerization of styrence/bulyl acryl ate and oxidized starch using sodium bisulphate/potassium per sulfate as initiator and sodium doddery sulfate as emulsifier.

摘 要：采用半连续乳液聚合的方法，以亚硫酸氢钠-过硫酸钾为引发剂，十二烷基硫酸钠为乳化剂，合成了一种以氧化淀粉、苯乙烯和丙烯酸丁酯为主要原料的空气滤清器滤纸浸渍乳液。

An improved simple method for carbon-carbon double bond cleavage by silica-supported potassium permanganate was described and a possible mechanism was proposed.

在无有机溶剂做介质的条件下，用硅胶吸附的高锰酸钾氧化6种难溶于水的液态烯烃，得到了双键发生断裂的氧化产物。

Results: By using SMI for 2 weeks, patientsleft ventricular ejective fractioncould be increased from 29.5±9.0 to 36.6±10.2 (P＜0.05), the heart function of 68.75%patients was improved, no side effects or toxicity was observed. Potassium magnesium aspartate could improve heart function in 37.50%patients only but with no effect on LVEF.

结果：应用参麦注射液2周后，左室射血分数由29.5±9.0升至36.6±10.2(P＜0.05)，68.75%的患者心功能改善，未发现明显毒副作用；门冬氨酸钾镁可使37.50%的患者心功能改善，但左室射血分数无明显变化。

Potassium bromide crystal s were effectively colored electrolytically with a lab-made electrolytic apparatus at 693 K by a DC 1 200 V voltage.

用自行研制的电注入装置，在693K温度下施加DC1200V电压、对溴化钾晶体进行电注入并使之有效着色。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷