c18

Method The C18 column was used .

方法色谱柱为C18柱；

A New Method for Purifying Little Oligonucleotide from Low Concentration of Solution by C18 Column

一种用C18柱纯化低浓度微量寡核苷酸的新方法

The comparison analysis of PAH special column and C18 with PAH mixed solution

PAH专用柱和C18柱对PAH混合溶液分析中的对比

Investigation on the Retention Rules of Various C18 Packings in Reversed Phase Liquid Chromatography

高效液相色谱不同C（18）填料保留规律的研究

Method : Sotalol in plasma sample was enriched with C18 solid phase extraction column .

方法：以C18固相萃取小柱预处理样品。

Samples were extracted by liquid - liquid method and C18 - SPE column in acetic condition .

在酸性条件下液-液提取和C（18）柱固相萃取方法处理生物样品；

Methods : In this study , using high performance liquid chromatography with C18 column , UV detection detects histamine .

方法本研究采用C18柱，利用紫外检测器的高效液相色谱法检测组胺。

Method : C18 column ;

方法：十八烷基硅烷键合硅胶色谱柱；

Samples were diluted with water and cleaned up with C18 SPE column .

样品经适量水稀释后，C18固相萃取柱提取净化，用V（甲醇）∶V（二氯甲烷）

Study on short Chain and C18 Fatty Acids in Tan Sheep Meat and its Influence on Meat Flavor

靖远滩羊体脂脂肪酸与肉品质关系的研究

After desiccation , TRL is measured directly on the C18 surface .

干燥后，在C18小片表面上直接进行荧光测定。

Four aflatoxins were separated in MG C18 column and detected by tandem mass spectrometry .

资生堂MGC18色谱柱分离后三重四级杆串联质谱测定。

C18 was selected as the best solid phase for extracting trace phenylurea herbicides in water samples .

选定C（18）相作为富集水样中苯脲除草剂的固定相。

Methods : To compare three kinds of methods of C18 , NH2 , and C8 column .

方法：对照比较了C18柱、NH2柱和C8柱三种测定方法。

Nitrogen and Phosphorus Removal Characteristics of Denitrifying Polyphosphate-accumulating Organism C18

反硝化聚磷菌C18脱氮除磷特性研究

Determination of 27 poison compounds in bottled drinking water by combining C18 solid-phase membrane extraction with GC-MS technique

膜萃取-气相色谱/质谱法测定瓶装饮用水中27种有毒有害物质含量

The structure and chromatographic behavior of C18 bonded monolithic silica capillary columns were characterized in this thesis .

对C18键合硅胶基质整体柱的结构和色谱行为进行了研究。

By comparison , we know that we can gain the satisfied refined sample solution with the purification of C18 small column .

通过比较：用C18小柱净化，可以得到满足要求的样品净化液。

By comparation we select C18 bonded-phase chromatography column and mixture of methanol and water as mobile phase .

通过比较我们选择十八烷基键合相色谱柱，选择甲醇和水的混合物作为流动相。

We describe an application of monolithic silica C18 capillary columns for the study of metal – ion interactions with sugars .

本文还将C18键合硅胶整体柱应用到糖与金属离子相互作用研究中，成功测定了糖-金属离子螯合物的稳定常数。

The quantitative analysis method of chlorfluazuron formulation by HPLC with DAD detector on C18 column at 254 nm was introduced .

采用反相高效液相色谱法，以C18柱为固定相，甲醇+水为流动相，用DAD检测器在254nm波长下定量测定氟啶脲的含量。

Methods Using a column packed with C18 and mixture of acetonitrile-water ( 30 ∶ 70 ) as the mobile phase .

方法采用C18柱；以乙腈-水（30∶70）为流动相；

And the baseline separation of the four components was achieved on C18 amide phase under a neutral mobile phase for the first time .

采用该方法制备的十八烷基酰胺固定相，首次在中性流动相条件下实现了对四种生物碱的基线分离。

The feasibility was verified by reversed phase chromatography including C18 and phenyl column , which were used to separate some neutral compounds .

可行性验证方法是通过装填反相色谱填料包括C18填料和苯基填料，并对一些中性化合物进行分离。

Compared with C18 SPE , the UV initiated MIPs show higher recovery than C18 for cholesterol in the sample .

紫外光引发MIPs对胆固醇的回收率明显高于常规的C18柱萃取法。

A novel gas-solid reaction method for the preparation of highly deactivated octadecyl ( C18 ) bonded silica packing was developed independently .

自主开发了制备高惰性C18硅胶填料的新型气固相反应法。

Methods The separation was performed on C18 column , with methanol-1 % acetic acid ( 40 ∶ 60 ) as mobile phase .

方法采用C18柱，甲醇：1%醋酸溶液（40∶60）为流动相，流速为1.0ml。

HPLC determination was developed for benzoic acid and salicylic acid in compound benzoic acid tincture , using Nucleosil C18 column .

采用HPLC法同时测定复方苯甲酸酊中苯甲酸和水杨酸含量。

OBJECTIVE To develop a method for the separation and purification of oxymatrine with C18 reversed-phase chromatography and normal dry-column flash chromatography .

方法采用反相C18柱色谱与正相低压干柱柱色谱从苦参的醇提物中分离纯化氧化苦参碱。

Carbonyl group on position C18 and epoxy three-membered ring on position C7 ~ C8 are the connecting parts ;

18位上的羰基和7～8位上的三元氧环是其活性的可能结合部位；