查询词典 acetonitrile

The mobile phase was a mixture of 20 mmol\L methylsulfonic acid and 20% acetonitrile\water at the ratio of 87∶13.

流动相为20mmol\L甲基磺酸-20%乙腈水混合溶液(体积比为87∶13)，流速为1.0mL\min

The water based food simulants,including deionized water,3％ acetate acid solution and 10 ethanol solution,were directly sampled into HPLC,while the refined olive oil needs to be successively extracted by hexane and methanol/acetonitrile mixture (volume ratio=1∶1) prior to sampling.

水基食品模拟物（去离子水、3%乙酸溶液、10%乙醇溶液）中的目标分析物可直接进样，精制橄榄油中的目标分析物依次通过正己烷和甲醇乙腈混合液（体积比1∶1）萃取后进样。

Sample matrix are discharged by the pre-column. The mobile phases applied consisted of 0.1% HOAc (pH3.0) acetonitrile-water on extraction column with UV detection at 225nm. Then, coupled-column liquid chromatographic methods for the direct analysis of atrazine and simazine in urine was established. As a result, the system showed good chromatographic property in the on-line analysis of atrazine and simazine in urine.

使用该系统对尿中的莠去净和西玛津残留进行了分离分析，以含有0.1%乙酸的酸性水缓冲液对加标尿液中莠去净类化合物保留在预柱上，干扰分析的大分子被排阻而无保留通过，其它干扰分子保留小而通过，再切换六通阀，以乙腈和0.1%乙酸水溶液进行梯度洗脱，进而在下一级ODS分析柱上进行分离（紫外检测225nm），两种除草剂的分离分析取得了良好的定性定量结果

The separation of neutral macrocyclic calyx [4] pyrroles with 1-butyl-3-methylimidazolium chloride as background electrolyte in acetonitrile was carried out by nonaqueous capillary electrophoresis.

建立了以1-丁基－3-甲基咪唑氯盐离子液体为背景电解质，非水毛细管电泳分离中性大环化合物八甲基杯[4]吡咯、四环戊基杯[4]吡咯、四环己基杯[4]吡咯的方法。

Methods: The protein and other impurity in the sample were precipitated by zinc acetate and potassium ferrocyanide after dipping of the sample. N,N-dichlorocyclohexylamine derived from sodium cyclamate by sodium hypochlorite in the filtrate was extracted by hexane. The HPLC separation was carried out with a phenomenex Gemini-C18 column using acetonitrile-water(7+3) or methanol-water (8+2) as mobile phase and detected by UV monitor at 314 nm. External standard method was used for quantification.

样品中甜蜜素浸提后，用乙酸锌和亚铁氰化钾试剂沉淀蛋白质等干扰杂质，过滤，用次氯酸钠将样品溶液中的甜蜜素转化为N，N-二氯环己胺经正己烷萃取后，在phenomenex Gemini-C18柱上，以乙腈－水(7+3)或甲醇－水(8+2)为流动相进行分离，HPLC-UV检测器在314 nm测定，外标法定量。

A multi-metal alloy catalyst for hydrogenation of acetonitrile to ethylamine was prepared using hydrazine hydrate and potassium borohydride as the co-reductant.

以水合肼和硼氢化钾为共还原剂制备了多元合金催化剂，将其用于乙腈催化加氢反应制乙胺。

A conventional three-electrode system is fabricated to study electrochemical and enzymatic reaction between tyrosinase in the gold nanoparticles and catechol in acetonitrile.

结果：基于构建的新型酶电极，对儿茶酚的催化响应显示了良好的线性关系，该酶电极最大响应电流密度为23.6μA／cm^2，米氏常数为4.28mmol／L。

Column: Agilent C18; mobile phase 10mol.l-1 monobasic Acetate buffer, 20 molL-1triethylamine solution adjusted to pH5.5 with Acetic acid -acetonitrile ,gradient elution, flow rate: 0.6 mLmin-1; Results:The Traditional Chinese Medicines contained Acarbose, Phenformin and Glibenclamide, and can be separated completely.

色谱柱：Agilent ZORBAX ODS C18柱(5μm，4.6×250mm， Agilent)；流动相：醋酸盐缓冲液(10molL-1醋酸胺，20 molL-1三乙胺，用醋酸调节pH5.5)与乙腈，梯度洗脱，流速：0.6 mLmin-1，色谱检测波长234nm，格列吡嗪为内标物进行定量分析。

Column: Agilent C18; mobile phase 10mol.l-1 monobasic Acetate buffer, 20 mol·L-1triethylamine solution adjusted to pH5.5 with Acetic acid -acetonitrile ,gradient elution, flow rate: 0.6 mL·min-1; Results:The Traditional Chinese Medicines contained Acarbose, Phenformin and Glibenclamide, and can be separated completely.

色谱柱：Agilent ZORBAX ODS C18柱(5μm，4.6×250mm， Agilent)；流动相：醋酸盐缓冲液(10mol·L-1醋酸胺，20 mol·L-1三乙胺，用醋酸调节pH5.5)与乙腈，梯度洗脱，流速：0.6 mL·min-1，色谱检测波长234nm，格列吡嗪为内标物进行定量分析。

Mobile phase was acetonitrile-1% glacial acetic acid in water.

流动相为乙腈-1%冰醋酸，柱温为35℃，流速为1.0 ml/min，检测波长为254 nm，进样量为20μl。

Now, however, all children continue in "comprehensive" schools, and the eleven-plus determines which courses of study the child will follow.

然而现在，所有的孩子都要在综合学校继续学习，所以这次考试只是决定他们将要学习哪些课程。

Cultivatable land , and led to a general recognition that development must not be carried at the cost of agriculture .

城区的迅速扩大在很多情况下侵占了宝贵的可耕地，使人们普遍认识到发展不能以牺牲农业为代价。