The dichloromethane-ethanol system was the excellent solvent for HPMCAS.

二氯甲烷-乙醇等混合溶剂是HPMCAS的良溶剂；

Thee output of acetone and dichloromethane which raw material volatilized is little.

生产工艺过程产生的丙酮，原料挥发产生的二氯甲烷、丙酮等产生量较小。 缪。

The triadimenol could be extracted with acetone, and then re-extracted with dichloromethane.

样品采用丙酮提取，然后使用二氯甲烷对提取液进行萃取。

Note. (1) The dichloromethane is distilled from phosphorus pentoxide and stored over molecular sieves.

注意事项(1)二氯甲烷加入五氧化二磷蒸馏，加入分子筛储存。

To establish a gas chromatography method for solvent desorption of dichloromethane in the air of workplace.

目的建立工作场所空气中二氯甲烷的溶剂解吸气相色谱测定方法。

Dichloromethane was used as extracting agent for the extraction, and then vacuum rotatory evaporator was used for the concentration.

以二氯甲烷为萃取剂对茅台迎宾酒中的微量成分进行了萃取，然后用真空旋转蒸发器将其浓缩。

When hexane is mixed with equal volume acetone, the yield decreases sharply, which is the same as cyclo hexane mixed with dichloromethane.

非极性溶剂正已烷和等体积性溶剂丙酮混合后，提取率有明显下降。

Atmospheric histories of halocarbons from analysis of Antarctic firn air: methyl bromide, methyl chloride, chloroform, and dichloromethane.

从南极永久性积雪空气分析大气卤烃的历史：甲基溴化物，甲基氯化物，氯仿和二氯甲。

The amount of Chinese domestic dichloromethane used in the medicine industry is about 15-20% of the total sales quantity of dichloromethane.

中国国内二氯甲烷用于医药行业的数量约为二氯甲烷总销售量的15 - 20%。

BTEX in air were adsorbed by active carbon tube, replaced carbon bisulfide by dichloromethane as reagent, analyzed by using Capillary GC-FID.

用活性碳吸附管采集大气中的苯系物，二氯甲烷替代二硫化碳作为脱附剂，毛细管气相色谱分离分析。

Objective To establish a method for detection of dichloromethane, 1,2-dimethoxyethane, toluene, ethyl acetate and ethanol in bromfenac sodium.

目的建立溴芬酸钠原料中二氯甲烷、甲苯、1，2-二甲氧基乙烷、乙酸乙酯、乙醇残留量测定方法。

After reaction, the purified product was obtained through extraction with dichloromethane, drying with anhydrous sodium sulfate and desolventizing.

反应后用二氯甲烷萃取，无水硫酸钠干燥，除去溶剂后得到纯净产物。

The results show that it is easy to separate sucrose-6-acetic ester from sucrose-4-acetic ester, using carbinol and dichloromethane as unfolding agent.

实验结果表明，采用甲醇、 二氯甲烷的混合物作为展开剂可较好地分离6位及4位蔗糖乙酸酯。

A method of TCL was developed to determine sulfonamides residues in chicken, Sulfonamides were extracted from tissues by dichloromethane and distilled to dry.

建立了鸡肉中磺胺类药物（磺胺二甲氧嘧啶、磺胺二甲基嘧啶、磺胺喹口恶啉）多残留检测的薄层色谱法。

Objective To study the influences of dichloromethane extraction from crude and processed Cornus Officinalis on bone marrow cells of aging mice induced by D-galactose.

目的研究山茱萸生、制品二氯甲烷萃取部位对D-半乳糖致衰小鼠骨髓细胞的影响。

Ring opening reaction of 2, 3-epoxy ketones with nitric oxide in dichloromethane occurred in a syn-selective fashion, producing syn-2-hydroxy nitrates as main products.

在二氯甲烷溶液中，一氧化氮导致2,3 -环氧酮发生顺式开环反应，生成的顺式羟基硝酸酯化合物为主要产物。

The researchers start off by drying their coffee grounds overnight and then pour in some common chemical solvents, such as hexane, ether and dichloromethane, to dissolve the oils.

研究人员使用的方法是将咖啡渣隔夜使其干燥，然后放入一些常见的化学溶剂中，例如正己烷、乙醚和二氯甲烷，来溶解咖啡渣中的油类成分。

Methods Chlorpyrifos was determined by GC-FPD after extraction by dichloromethane. Qualitative analysis was done by retention time and quantitative analysis by external standard curve.

方法水中的毒死蜱经二氯甲烷萃取后，用火焰光度检测气相色谱法测定，以保留时间定性，外标法定量。

Fallout particulates from ambient air were collected in an leeward residential area of a power plant. Then, were extracted with dichloromethane, concentrated and redisolved in olive oil.

在电厂下风侧居民区内收集大气悬浮微粒，经二氯甲烷提取，浓缩制成受试物，给孕鼠腹腔注射不同剂量，观察对小鼠胚胎及胎仔发育的影响。

2-(methylenedioxy)benzene is synthesized by using catechol, dichloromethane and dimethylsulfoxide with the condition of alkali and normal pressure. Overall yield of the process is 73.4%.

前言： 以邻苯二酚和二氯甲烷为原料，二甲亚砜为溶剂，在碱性条件下合成1，2-亚甲二氧基苯，产品收率达到73.4%；

DEET did not have the attractiveness to mosquitoes, and did not exhibit inhibition on L-lactic acid dichloromethane solution too, but enhanced the attractivity of human odor to mosquitoes.

DEET对蚊虫无明显的引诱作用，对二氯甲烷l -乳酸溶液引诱剂也无明显的抑制效果，但可显著增强人体气味对蚊虫的引诱性。

A simple capillary GC method for the determination of residual ethanol, dichloromethane, chloroform, tetrahydrofuran, 1, 4 dioxane, pyridine and toluene in tropisetron citrate was established.

采用毛细管气相色谱法，以外标法测定枸橼酸托烷司琼中乙醇、二氯甲烷、氯仿、四氢呋喃、二烷、吡啶和甲苯的含量，用串联的HP - 1 0。

The procedure was described, including extraction by acetone and dichloromethane, cleaning up by passing through a column made up of neutral alumina and active carbon, determination by GC with NPD.

样本用丙酮提取，加二氯甲烷萃取，通过中性氧化铝和活性炭混合柱层析净化，然后上气相色谱用NPD检测。

A capillary GC method with FID detector for the determination of residual organic solvents ethanol, isopropanol, dichloromethane, n-hexane, tetrahydrofuran, DMF and dimethyl malonate was established.

建立了毛细管气相色谱法测定甲磺酸齐拉西酮中残留溶剂乙醇、异丙醇、二氯甲烷、正己烷、四氢呋喃、D MF、丙二酸二甲酯的残留量。