甲醇

An efficient method for analyzing Arbutin and Hydroquinone in cosmetics by reversed-phase high performance liquid chromatography is developed.

探讨了高效液相色谱法同时测定美白化妆品中熊果苷和氢醌含量的方法，先对样品进行预处理，处理液为氯仿-饱和氯化钠溶液(体积比2∶1)，再选用Apollo C18柱，以甲醇-磷酸缓冲液-冰醋酸(体积比25∶475∶1)混合液为流动相，紫外检测，波长为254nm。

This paper proposes a method for the determination of 4-hydroxy-3-nitro-benzenearsonic acid and arsanilic acid in the nitration reaction product of arsanilic acid by ion-pair chromatography.

本文提出一种用于测定对氨基苯胂酸硝化反应产物中4-羟基-3-硝基苯胂酸及对氨基苯胂酸含量的离子对色谱法，选择甲醇：水=25：75作为流动相，0。

Through the calculation of the relative volatility under different solvents and conditions for some azeotropic systems, optimum solvents have been chosen, and the influences of temperature and ratio of solvent on relative volatility were discussed.

通过对甲醇－乙酸甲酯共沸体系在不同萃取剂和不同萃取条件下相对挥发度的计算，选择出适宜的萃取剂，并讨论了温度和溶剂比对相对挥发度的影响。

Strain Ppl35 can secrete human lysozyme in media when inducing by methanol, so it can be determinated for human lysozyme bacteriolytic activity straightly in fermentative supernatants by agar plate diffusion method which used Microccous lysodeikticus as the test bacterium.

菌株Pp135经甲醇诱导，可将人溶菌酶分泌到培养基中，因此可在发酵上清液中直接检测到人溶菌酶的活性。

Batata carboxymethyl starch dregs is synthesized by the reaction of batata starch dregs (C 6H 9O 4OH) and chloroacetic acid in solvent of methanol under alkaline condition.

以甲醇为溶剂，红薯淀粉渣(C6 H9O4OH)和氯乙酸为原料，在碱性条件下合成红薯羧甲基淀粉渣。

Based on the antioxidant activity of methanol extract, the 14 yam tubers examined can be divided into 4 groups. They are group 1 (TN.1;TK batatas; Taiya),group 2(TN.2;Chinsheen;Can-shape),group 3(MC long red; China long; KL long; ML faisan),and group 4 (San 2;San 3;Erchu,Purple red).

依甲醇萃取物之抗氧化力，山药大致可分为四群，分别是（台农一号、桃改batatas、泰雅）、（台农二号、日本青森、罐型薯）、（名间长红、中国长、基隆长薯、大陆淮山）、与（汕二、汕三、二刺、紫玉血薯）。

Poly( N -vinyl-2-pyrrolidone)protected nanoclusters of platinum was used as catalysts in the hydrogenation of m -phenoxy benzaldehydeto form high purity m -phenoxy benzalcohol.

研究了常压下聚N -乙烯基 2 -吡咯烷酮保护的铂金属簇催化剂催化间苯氧基苯甲醛加氢制备高纯间苯氧基苯甲醇的反应。

The adsorption isotherms of Sodium Dodecyl Sulfonate onto wool fiber surface which experienced clean processing from an acid aqueous solution(pH3.0～3.5) by conductance method at 366K(93℃) were studied, so did the isotherms of wool adsorbing SDS from different aqueous solutions which containing various auxiliaries(containing glycol/benzalcohol and zinc sulfate).

戴丽 ，耿信鹏，林国栋采用电导法研究了366K(93℃)时经洁净处理的羊毛纤维在酸性(pH=3.0～3.5)水溶液中对十二烷基磺酸钠的吸附等温线，以及羊毛在不同助剂(含乙二醇/苯甲醇和硫酸锌)的水溶液中对SDS的吸附等温线。

Computationalresults indicate that the no-planar trans-benzanilide is the most stable structure. The spectra indicate that the Franck Condon region photodissociation dynamics have multidimensional character withnine activemodes. The intensity of υ24 mode in methanol is much stronger than that in acetonitrile. Compared with fatty amides and benzamide, phenyl substitution for H atom on-NH2 group makes C=O solvent effects disappear.

结果表明，苯甲酰苯胺的非平面反式结构为最稳定结构；在Frank-Condon区域内，苯甲酰苯胺主要由9个活性振动模组成；其中ν24（苯环上C＝C不对称伸缩振动和CCH的面内弯曲振动，NH面内弯曲振动）振动模在甲醇溶剂中的强度远远大于其在乙腈的强度；与脂肪酰胺类化合物和苯甲酰胺的研究结果比较发现，苯基取代－NH2上的H原子使得C＝O不再具有明显的溶剂效应。

The photoproducts of CCU in organic solvents have also been identified with HPLC- and GC-MS. The photoproducts identified in methanol are isocyanato bezene, 4-chlorophenyl isocyanate, 2-chloro benzamide, chlorobenzene, 4-chlorophenyl urea, N-phenyl methylcarbamate, N-(4chlorophenyl) methylcarbamate, and 2-chloro-N-(4-chlorophenyl) benzamide.

对灭幼脲在各种有机溶剂中的光解产物作HPLC/UV和GC-MS鉴定，发现其在甲醇中的光解产物含有：异氰酸苯酯、对氯苯基异氰酸酯、邻氯苯甲酰胺、氯苯、对氯苯基脲、N-苯基氨基甲酸甲酯、N-氨基甲酸甲酯、以及N-邻氯苯甲酰胺等。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。