查询词典 formic

A method for the determination of 12 sulfonamides (sulfanilamide, sulfamonomethoxine, sulfacetamide, sulfamethoxazole, sulfadiazine, sulfisoxazole, sulfathiazole, sulfadimethoxine, sulfamerazine, sulfaquinoxaline, sulfamethazine, sulfanitran) in cosmetics was developed by ultra performance liquid chromatography with photodiode array detector. The chromatographic column used was Acquity UPLCTM BEHC C18 (50 mm×2.1 mm, 1.7 μm) and the mobile phase was acetonitrile-0.1% formic acid aqueous solution.

建立了采用超高效液相色谱-二极管阵列检测器测定化妆品中12种常见的磺胺抗生素(磺胺，磺胺间甲氧嘧啶，磺胺醋酰，磺胺甲基异唑，磺胺嘧啶，磺胺二甲异唑，磺胺噻唑，磺胺二甲氧嘧啶，磺胺甲基嘧啶，磺胺喹啉，磺胺二甲嘧啶，磺胺硝苯)的方法。

At high temperatures, high resistance to formic, phosphoric,sulfurous and sulfuric acids.

的性能，对于甲酸、磷酸、亚硫酸和硫酸具有很好的耐腐蚀性。

Methods: Glipizide gliclazide glyburide glimepiride gliquidone repaglinide nateglinide pioglitazone rosiglitazone metformin phenformin and tolbutamide added in the blank ground samples were extracted with 80% methanol and were separated from an ACQUITY UPLC DBH C18 column with a gradient mobile phase of acetonitrile - 0.2 % formic acid water solution. A tandem quadrupole mass spectrometer equipped with electrospray ionization source was used in positive ion mode multiple reaction monitoring was performed to quantify above mentioned compounds.

被添加在中成药制剂及其包装物中的二甲双胍、苯乙双胍、罗格列酮、吡格列酮、格列吡嗫娶瑞格列奈、甲苯磺丁脲、格列齐特、格列苯脲、那格列奈、格列美脲、格列喹酮等西药成分用80%甲醇提取，以乙腈- 0.2%甲酸水溶液为流动相梯度洗脱，在ACQUITY UPLC DBH C18色谱柱上分离，串联四级杆质谱检测，MRM方式采集并定量。

Are the main products are: yellow phosphorus, phosphoric acid, sodium salt (one, two, three, four, five, six sodium), formic acid, sodium, a potassium, dispersants, S Lida triazine and more than 300 chemical reagent Products.

现主要产品有：黄磷、磷酸、磷酸钠盐（一、二、三、四、五、六钠）、甲酸、甲酸钠、甲酸钾、分散剂、硫利达嗪和300多个化学试剂产品。

Micellar electrokinetic capillary chromatography with indirect ultraviolet detection method for the separation and determination of several organic acids in cane vinasse , malonic,formic,tartaric,malic,succinic, glutaric,acetic,lactic and glutamic acids,were developed.

该法用于糖蜜酒精废液中有机酸的测定，结果令人满意，9种有机酸的样品加标回收率均在93%以上。

The azeotropism -fractionation process for recovering formic acid from acid wastewater in cyclohexanol/ cyclohexanone production was studied,and the feasible kind and dosage of entrainment reagent for was determined.

采用共沸—分馏组合法从环己醇和环己酮生产装置产生的酸性废水中回收甲酸，确定了适宜挟带剂的种类及加入量。

Benzothiophene was selected as model sulfide and dissolved in n-octane to form model diesel, hydrogen peroxide/formic acid/sulfuric acid were used as the oxidative system.

在苯并噻吩／正辛烷配成的模拟柴油中，以过氧化氢／甲酸／硫酸作氧化脱硫体系，考察了硫酸的催化性能以及反应条件对氧化脱硫率的影响。

Synthesis process Molecular Formula:〓 Molecular Weight: 394 Chemicla name: N-(2, 3-dihydro-2, 7-dimethyl-benzofuran-1-acyl)-N'-tert-butylN'-(3, 5-dimethyl benzoyl) hydrazine Structural formula:〓 This article define a synthesis method of JS118 with (2, 3-dihydro-2, 7-dimethylbenzofuranyl)-6-formic acid, tert-butyl hydrazine hydrochloride acid and 3, 5-dimethyl benzoic acid as main intermediate through four steps of reaction involving, acyl chloridation condensation and so on.

本文主要的研究工作内容：(1)以N-特丁基双酰肼为先导结构，利用分子等排原理和类同合成法进行先导设计，有目的、有选择地重点改变R〓、R〓基团，将具有不同取代基的苯环以及呋喃环、苯并呋喃环、吡咯环、吡啶环等杂环、稠杂环与先导结构进行有机的组合。

Analyse and compare what adopt a variety of pair of methods, the Michael addition reaction of ester of acerbity second of second of hydroxyl of protection of benzyl of the response of close nucleus addition that uses second nitrile and ester of formic acid second certainly, chloridize, cyanogen, reaction that take off carboxyl generates 3- benzyl oxygen radical the fifth of the ten Heavenly Stem the method of 2 nitrile, detailed discussion the action that wait and the by-product that arise possibly reach the reactant in each pace reaction, activator, dissolvent avoid a method.

通过对多种方法的分析和比较，确定采用乙腈和甲酸乙酯的亲核加成反应、氯化苄保护羟基、氰乙酸乙酯的Michael加成反应、脱羧反应生成3-苄氧基戊二腈的方法，并具体的讨论了每一步反应中反应物、催化剂、溶剂等的功能和可能产生的副产物及避免方法。

The organic acids (formic acid, acetic acid, propionic acid, oxalic acid, succinic acid, glutaric acid) and inorganic anions (fluorion, chlorion, sulfate readical) were separated and determined within 33 min.

建立了拜尔法铝酸钠溶液中多种有机酸和无机阴离子的离子色谱分析方法。

But GST= 0.156, Nm=1. 588. As a result, the foundation of Youyongchi Avicennia marina population was the result of the migration of hypocotyles and human factors.

这项工作可以为海岸防护林中新引进种类的判定以及为研究种群建立者效应方法的确定提供科学依据。

The two-dimensional CDRC-ADI-FDTD update equations for collision unmagnetized plasma are induced. The unconditional stability of the CDRC-ADI-FDTD formulation for collision unmagnetized plasma is obtained by the examples.

推导了碰撞非磁化等离子体中的二维CDRC-ADI-FDTD迭代公式，并用算例验证了碰撞非磁化等离子体CDRC-ADI-FDTD算法也是无条件稳定的。