查询词典 active carbon

In the determination of methyl acrylate,butyl acrylate and methyl methacrylate in ambient air,the sample was absorbed with active carbon and resolved with carbon bisulfide,and then determined by GC.

测定环境空气中的丙烯酸甲酯、丙烯酸丁酯和甲基丙烯酸甲酯时，气样采用活性炭吸附，用二硫化碳解析，直接进气相色谱仪检测，根据保留时间定性，外标法定量，能获得良好的线性和较低的方法检出限，不仅精密度、灵敏度和重复性良好，而且可操作性强，易于在环境监测系统中推广。

In the determination of methyl acrylate,butyl acrylate and methyl methacrylate in ambient air,the sample was absorbed with active carbon and resolved with carbon bisulfide,and then determined by GC.After the qulitation by retention time and quantitation by external standard method,the good linearity and low detection limit were got.

测定环境空气中的丙烯酸甲酯、丙烯酸丁酯和甲基丙烯酸甲酯时，气样采用活性炭吸附，用二硫化碳解析，直接进气相色谱仪检测，根据保留时间定性，外标法定量，能获得良好的线性和较低的方法检出限，不仅精密度、灵敏度和重复性良好，而且可操作性强，易于在环境监测系统中推广。

Methods Capillary gas chromatography and FFAP capillary column were applied; active carbon tube was used to collect the organic solvent samples in the air of workplaces, the samples were dissolved with carbon bisulfide and determined with capillary gas chromatography.

采用毛细管气相色谱法，选用FFAP毛细管分离柱，用活性炭采集工作场所空气中有机溶剂，经二硫化碳解析后进样测定。

Methods: Compare the different absorb abilities and filtration capabilities among the tiny grains of three adsorbing materials bamboocharcoal, backbone carbon, active carbon） for F1 ion in the drinking water as well as the influences of the effects to absorb and filter F1 ion by different factors such as pH value,.coagulator and so on.

比较三种吸附材料的超细颗粒对饮水中氟离子的吸附能力，pH值、聚合氯化铝对除氟效果的影响以及在自来水中的除氟效果。

Compared carbon pools and turnovertime under different soil types, the result shows: soil total organic carbon is grey cinnamonforest soil＞dark-brown soil＞meadow soil＞brown coniferous forest soil＞red soil＞yellowsoil＞yellow brown soil＞paddy soil＞red soil＞flubo-aquic soil＞fengsha soil,temperate forest soil＞subtropical forest soil＞subtropical cropland soil＞temperate dry soil.Active carbon is temperate forest soil＞subtropical soil.

对不同土壤类型的碳库及其驻留时间进行比较，得出：有机碳含量呈现：灰褐土＞暗棕壤＞草甸土＞棕色针叶林土＞红壤＞黄壤＞黄棕壤＞水稻土＞农田红壤＞潮土＞风沙土，温带森林土壤＞亚热带森林土壤＞亚热带农田土壤＞温带干旱土壤；活性碳含量是温带森林土壤＞亚热带的土壤。

Methods: Mesityl oxide in the air was sampled by active carbon tube and desorbed by the solvent of carbon disulfide which included 1% methanol, then separated by FFAP capillary column, and finally detected by hydrogen flame detector. The experimental study was conducted according to the requirements of Regulation of studies on the determination of toxicants in the air of workplace.

工作场所空气用活性炭管采集，经1%甲醇的二硫化碳溶液解吸，FFAP毛细色谱柱分离，氢火焰离子化检测器检测，按照《工作场所空气中有毒物质检测方法研制规范》的要求进行方法研究。

Methods: Mesityl oxide in the air was sampled by active carbon tube and desorbed by the solvent of carbon disulfide which included 1% methanol, then separated by HP-5 capillary column,and finally detected by mass detector.

工作场所空气用活性炭管采集，经1%甲醇的二硫化碳溶液解吸，HP-5毛细色谱柱分离，气质联用仪检测。

The results show that under the follow conditions: pyrolysis temperature 270癈,active carbon and: ethyne black=9:l, carbon pretreated with HNOs, 7.18% Mn(NO3)2(vs. carbon support) catalyst can exhibit the best performance. In order to improve the electrocatalystic performance of MnO2, Pb(CH3COO)2 , La(NO3)3-6H2O and Ce(NO3)3-6H2O are chosen as additives of MnCVC air electrode . Electrochemical performance of the electrodes is studied by current-potential polarization curves.

为了提高催化剂的性能，选择了醋酸铅、稀土作为添加剂，采用稳态极化和交流阻抗测试方法，结果表明：铅的氧化物、稀土La和Ce可作为MnO_2催化剂的助剂来促进氧气还原反应的进行，醋酸铅添加7.5％时极化最小，在一般金属-空气电池的工作电流密度20～50mA／cm~(-2)下，电位比单独MnO_2催化剂可提升30～50mV。

It was difficult to extract corn pigments completely, for some of them were in a protein-bind state. It was better to use active carbon for the decolorization of GEON, the conditions were 40℃, stir time 6 hours, the ratio of carbon to hydrolyzate 1: 100 , but as to milk-like powder, it was better to extract pigments after spray drying.

最后，本文对玉米黄素的可抽提性也进行了初步研究，结果表明，部分色素与蛋白质结合而难以抽提，因而有机溶剂难以将色素抽提完全，对Gln活性肽营养液而言，可选用酶解后加活性炭进行脱色，脱色条件为40℃，搅拌6小时，炭液比为1∶100；而对黄粉蛋白乳粉而言，喷雾干燥后用乙酸乙酯脱色，可使酶解干燥后黄粉的异味减轻。

The dynamics of soil organic carbon was analyzed by using laboratory incubation and double exponential model that mineralizable SOC was separated into active carbon pools and slow carbon pools in forest soils derived from Changbai and Qilian Mountain areas.

本文利用土壤培养实验和双指数模型（把土壤有机碳划分为活性碳和缓效性碳库）的方法，来分析确定长白山和祁连山的土壤有机碳的动态变化。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐