乙腈

Influence of active components in the catalyst and acetonitrile hydrogenation condition on behaviors of the catalyst and stability of the catalyst were investigated.

研究了催化剂活性组分和乙腈催化加氢工艺条件对催化剂性能的影响，并考察了该催化剂的稳定性。

The system can detect hexylamine, dimethyl sulphoxide and acetonitrile properly and is verified that it is valid.

利用该系统准确识别了环己胺、二甲基亚砜和乙腈三种有机化合物，验证了所构造的系统的有效性。

At this temperature, the selectivity of acrylonitrile is 92.7% and the conversion of acetonitrile is 19.9%.

在反应温度为400℃时，Mn_(0.2)/BaCO_3催化剂上丙烯腈的选择性为92.7%，乙腈的转化率为19.9%。

Acetonitrile (85∶15) as mobile phase. The flow rate was 1.0 mL/min and the detection wavelength 316 nm.

乙腈（体积比85∶15）为流动相，流速1.0 mL/min，检测波长为316 nm。

A check stock standard was prepared in 60:40 acetonitrile: water.

检查库存标准编写60：40乙腈：水。

And the concentration of the additive, acetonitrile would thwart the

而添加物，乙腈的浓度对於嵌入反应性有很大的牵制性。

The method of determination of trace acetonitrile in the extract of butadiene is introduced.

作为顺丁橡胶生产的原料，工艺控制要求丁二烯中检不出乙腈。

Methods The plasma samples were treated with acetonitrile and analyzed by HPLC with UV 5.15％, respectively.

方法血浆样品经乙腈沉淀蛋白处理后，取上清液在244nm波长下采用高效液相色谱法进行分析。

They may be dissolved in most common organic solvents,excluding methanol.Examples of suitable solvents include acetonitrile or acetone.

该化合物可以溶解在除甲醇以外的大多数普通有机溶剂中，适宜的溶剂有乙腈和丙酮。

Methods: The mobile phase consisted of acetonitrile and water was used as gradient elution for separation with HPLC.

采用HPLC法，以乙腈－水溶液为流动相进行梯度洗脱。

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。