dichloromethane
英[daɪklɔ:rəˈmeθeɪn]
美[daɪklɔːrəˈmeθeɪn]
双语例句
- 1. 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;
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- 2. 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。
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- 3. 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。
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- 4. 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。
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- 5. 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。
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- 6. 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。
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- 7. 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。
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- 8. 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。
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- 9. 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%。
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- 10. 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。
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- 11. 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。
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- 12. 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。
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- 13. 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。
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- 14. 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。
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- 15. 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。
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- 16. 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。
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- 17. 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。
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- 18. 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。
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- 19. 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。
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- 20. 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%;
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- 21. 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。
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- 22. 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。
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- 23. 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。
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- 24. 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。
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- 25. 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。
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