查询词典 methanol

Cefminox sodium reacted with 2,4 dinitrophenol to form a charge transfer complex in methanol acetone and can be quantitatively determined by spectrophotometric method at 403 nm.

利用头孢米诺钠与2，4 二硝基苯酚在甲醇丙酮介质中反应，形成电荷转移络合物，采用分光光度法测定。

Dioxane was selected as solvent. The linear range for methanol was 6-54mg/L for ethanol and ethyl acetate both were 10-90mg/L. The average recovery of them was 99, 36, 101.26% and 101.57% respectively.

在上述色谱条件下，甲醇的线性范围为6-54mg/L，乙醇和乙酸乙酯的线性范围为10-90mg/L；平均加样回收率分别为99.36、10l.26%和101.57%。

Objective: to study the synthesis of optically pureα,α-diphenyl(pyrrolidin-2-yl)methanol.

目的：研究光学纯α，α-二苯基-2-吡咯甲醇的合成工艺。

This method is simple, sensitive and accurate. It is reliable to determine methanol in dishwashing.

该法操作简便、灵敏、准确可靠，可适用于各种洗涤剂的测定。

Methods: The analytical column was SHIMADZU VP-ODS C18 column(4.6 mm×150 mm, 5 μm) with a mobile phase consisted of 0.05 mol/L disodium hydrogen phosphate solution(85% phosphoric acid solution with pH adjustment to 2.5)-acetonitrile-methanol(42.5∶47.5∶10) at the flow rate of 1.0 ml/min, the detection wavelength was set at 254 nm.

色谱柱为SHIMADZU VP-ODS C18柱(4.6 mm×150 mm，5 μm)，流动相为0.05 mol/L磷酸氢二钠溶液(用85%磷酸溶液调节pH值至2.5)-乙腈-甲醇(42.5∶47.5∶10)，流速为1.0 ml/min，检测波长为254 nm。

Methods: The analytical column was SHIMADZU VP-ODS C18 column(4.6 mm×150 mm 5 μm) with a mobile phase consisted of 0.05 mol/L disodium hydrogen phosphate solution(85% phosphoric acid solution with pH adjustment to 2.5)-acetonitrile-methanol(42.5∶47.5∶10) at the flow rate of 1.0 ml/min the detection wavelength was set at 254 nm.

目的：建立丙酸氯倍他索尿素乳膏中丙酸氯倍他索含量的HPLC测定方法。方法：色谱柱为SHIMADZU VP-ODS C18柱(4.6 mm×150 mm5 μm)流动相为0.05 mol/L磷酸氢二钠溶液(用85%磷酸溶液调节pH值至2.5)-乙腈-甲醇(42.5∶47.5∶10)流速为1.0 ml/min 检测波长为254 nm。

Methods 7 kinds of antibiotics, dexamethasone phosphate disodium salt and salicylic acid were separated on a C18 column using methanol: acetonitrile-aqueous solutions:0.01mol/L oxalic acid=l1:22:67 as the mobile phase at a flow rate of 0.8ml/min, with the column temperature 25℃ and detection wave 240nm and 268nm.

采用C18色谱柱(4.6mm×250mm， 5μm)，以甲醇：乙腈：0.01mol/L草酸＝11：22：67为流动相，流速为0.8ml/min，检测波长为240和268nm，柱温为25℃，在此色谱条件下进行检测。

It is also suitable for distil ling solvents such as methanol an so on.

本装置适用于制药，食品，轻工，化工等行业的稀酒精回收。

MTBE can be formed by addition of methanol to the double bond of isobutene.

MTBE可由异丁烯和甲醇经加成反应而合成。

Positive high yield expression recombinant was characterized by its drug-fast phenotype and methanol induction.

用抗药性表型和甲醇诱导筛选出重组蛋白表达阳性的转化X-33。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。