1)headspace injection顶空进样
1.A capillary column headspace injection method for the determination of residual methanol, tetrahydrofuran, dichloroethane, pyridine and toluene in reloxifene hydrochloride was established.采用毛细管柱顶空进样法 ,以二烷为内标 ,同时测量盐酸雷洛昔芬中甲醇、四氢呋喃、二氯乙烷、吡啶及甲苯等 5种溶剂的残留量。
2.A GC headspace injection method for the determination of residual organic solvents such as methanol, ethanol, acetonitrile, dichloromethane, ethylacetate, 4 methyl 2 pentanone, toluene, DMF, chloroform and tetrahydrofuran in tazobactam was established.建立了气相色谱顶空进样法测定三唑巴坦中甲醇、乙醇、乙腈、二氯甲烷、乙酸乙酯、甲基异丁基酮、甲苯、N ,N′-二甲基甲酰胺、氯仿和四氢呋喃等有机溶剂的残留量。
3.Methods The volatile compounds obtained by steam distillation or direct headspace injection were analyzed by GC-MS.方法采用传统的水蒸气蒸馏提取挥发油,和顶空进样直接采集挥发性成分2种方法,对吉林细辛中的挥发性成分进行GC-MS分析。
英文短句/例句
1.Measurement of Nitrite Concentration in Grape Wine by Gas Chromatography-Headspace Sampling气相色谱-顶空进样法测定葡萄酒中的亚硝酸盐
2.Determination of Halohydrocarbons in Water by Headspace Capillary Gas Chromatography顶空进样气相色谱法测定水中10种卤代烃
3.Analysis of Perfume Constituents in Beer Using Headspace Capillary Gas Chromatography;顶空进样—毛细管柱气相色谱法分析啤酒的香味组分
4.New Application of Headspace Sampler in Rapid Detection of Flavors from Maillard Reaction in Foods顶空进样器在快速检测食品美拉德反应风味物质中的新应用
5.Analysis of Chemical Constituents of Chinese Eaglewood Wood by Gas Chromatography-Mass Spectrometry Coupled with Dynamic Headspace Sampling动态顶空进样-气质联用法分析国产沉香化学成分
6.Determination of Ethanol in Blood by Headspace Capillary Gas Chromatography顶空进样毛细管柱气相色谱法测定血液中酒精含量
7.Ferment liquid substance aroma analysis by Headspace-GC and titration methods全自动顶空进样法与回流-滴定法分析酿酒醪液中香气物质
8.uploading air cleaner顶部进气的空气滤清器
9.GC-MS Analysis for Volatile Compounds of Herba Asari from Jilin Province Obtained by Steam Distillation or Headspace Injection水蒸气蒸馏提取与粉末顶空直接进样GC-MS分析吉林细辛的挥发性成分
10.Strengthening Techniques for the Elevated Existing Railway During the Construction of the Framed Bridge框架桥顶进施工时既有铁路架空加固技术
11.“You cannot get in your car with the jack up like that.“千斤顶这样放着你根本进不了车，会掉下来的！
12.This paper analyses the leakage cause at the fixing position of the top-mounted air comditioner and presents the modified installation structure to improve the waterproof performance.分析顶置空调处渗水、水的原因,改进顶置空调安装与防水密封的结构。
13.Analysis of solvent residues in raw material drug of glimepiride by head-space sampling-capillary gas chromatography顶空采样-毛细管气相色谱法分析格列美脲原料药中的溶剂残留
14.The technique requires multiple extractions from the sample vial. This is very useful for developing method and running special sample.对于同一样品瓶的多次顶空提取，得到多个样品色谱图，用于方法的开发和对特种样品的分析。
15.When the relief valve opens, as in the accompanying air-in/water-out diagram, the right-hand channel admits air to the top of the reduced pressure zone, relieving the zone vacuum.当安全阀开启时，伴随着气进/水出隔膜，右侧渠道使得空气进入减压区顶部，消除减压区的真空。
16.It's pleasant to stand on top of the hill and take in deep breaths of fresh air.站在崇山峻岭顶上深深吸进新鲜空气令人感到惬意。
17.Open the inlet water valve and press the top discharge valve to discharge the air in the filter at the same time.打开进水阀门，同时按下顶上排气阀，使滤器内空气排出即可。
18.Manoeuvres of a most extraordinary kind were going on in the vast firmamental hollows overhead.头顶的茫茫太空中正在进行着一场规模极为罕见的调兵遣将。
相关短句/例句
Headspace Sampling顶空进样
1.Determination of the residual organic volatile solvents in block cream by gas chromatography with headspace sampling;气相色谱顶空进样法测定防晒霜中有机溶剂残留量
2.Determination of three residual organic volatile solvents in cefepime by gas chromatography with headspace sampling;气相色谱顶空进样法测定头孢吡肟中3种有机物残留量
3.In concentrated sulfuric acid TFA may change into MTFA with dimethyl sulfate(DMS),so it is possible to obtain the mass concentration of TFA in water samples by determining the mass concentration of MTFA with headspace sampling and GC-MS,using the volatility of MTFA.笔者建立了测定TFA质量浓度的实验方法:将样品中的三氟乙酸与硫酸二甲酯在浓硫酸介质中衍生为三氟乙酸甲酯(MTFA),利用MTFA的易挥发性,以顶空进样和气相色谱-质谱联用的方法检测样品中MTFA的质量浓度,进而得到环境水样中TFA的质量浓度。
3)Headspace[英]['hedspeis][美]['h?d,spes]顶空进样
1.A method for the determination of volatile constituents in adhesive by headspace GC/MS was proposed.报道利用顶空进样 -GC/MS技术鉴定物质中挥发性成份的方法 ,鉴定出XY挥发性成份。
2.Determination of residual solvent in medicine by wide-bore capillary Headspace-Gas Chromatography(HS-GC)is a rapid,simple and high-efficient method,it is widely applicated to determinate residual solvent in medicine.本文通过建立原料药肝素钠、烟酸占替诺、福辛普利钠和盐酸头孢唑兰中残留溶剂分析测定方法,阐述了顶空进样一大口径毛细管气相色谱法检测药物中残留溶剂的应用,通过研究建立方法,探讨了顶空进样大口径毛细管气相色谱法应用开发和实际应用问题。
3.METHODS The headspace GC system consisted of a capillary column,polymerization or cross linking polyethylene glycol as the solid phase,and FID as the detector.方法以聚乙二醇为固定相的毛细管色谱柱,氢火焰离子检测器,顶空进样方式,柱温:起始温度为60℃,程序升温起始温度为60℃,保持16 min,以每分钟20℃的升温速率升至200℃,保持2 min。
4)headspace sampler顶空进样
1.The headspace sampler of Agilent 7694E was equilibrated at 85℃ for 40min.min-1,分流比为2∶1,柱温为50℃;检测器为FID,检测器温度250℃;Agilent6890NGC仪和7694E顶空进样器,顶空瓶加热温度为85℃,加热40 min;进样口温度为200℃。
2.By using distilled water as absorbing liquid to absorb acetone,methanol,ethanol and isopropanol in ambient air,and using headspace sampler in Gas chromatography and then separating them by capillary column,FID was used as detector.采用蒸馏水为吸收液,吸收大气中的丙酮、甲醇、乙醇和异丙醇,在气相色谱仪上顶空进样,经毛细管柱分离,以FID为检测器,可以准确地测出大气中的丙酮、甲醇、乙醇和异丙醇,以保留时间定性,峰高定量。
5)headspace injection顶空进样法
6)headspace samplar顶空进样器
延伸阅读
HPLC六通阀进样器的使用及保养说明 六通阀进样器是高效液相色谱系统中最理想的进样器，它是由圆形密封垫(转子)和固定底座(定子)组成。美国Rheodyne公司的六通阀进样器最为通用，各大HPLC仪器制造商均以此产品作为仪器的进样器。工作原理：1、手柄位进样(Load)位置时，样品经微量进样针从进样孔注射进定量环，定量环充满后，多余样品从放空孔排出；2、将手柄转动至进样(Inject)位置时，阀与液相流路接通，由泵输送的流动相冲洗定量环，推动样品进入液相分析柱进行分析。虽然六通阀进样器具有结构简单、使用方便、寿命长、日常无需维修等特点，但正确的使用和维护将能增加使用寿命，保护周边设备，同时增加分析准确度。如使用得当的话，六通阀进样器一般可连续进样3万次而无需维修。以下浅谈有关六通阀进样器的使用及保养事宜(仅供参考)：1、手柄处于Load和Inject之间时，由于暂时堵住了流路，流路中压力骤增，再转到进样位，过高的压力在柱头上引起损坏，所以应尽快转动阀，不能停留在中途。在HPLC系统中使用的注射器针头有别于气相色谱，是平头注射器。一方面，针头外侧紧贴进样器密封管内侧，密封性能好，不漏液，不引入空气；另一方面，也防止了针头刺坏密封组件及定子。2、六通阀进样器的进样方式有部分装液法和完全装液法两种。使用部分装液法进样时，进样量最多为定量环体积的75％，如20gL的定量环最多进样15p,L的样品，并且要求每次进样体积准确、相同；使用完全装液法进样时，进样量最少为定量环体积的3至5倍，即20gL的定量环最少进样60至1001aL的样品，这样才能完全置换样品定量环内残留的溶液，达到所要求的精密度及重现性。推荐采用100ul的平头进样针配合20ul满环进样。3、可根据进样体积的需要自已制作定量环，一般不要求精确计算定量环的体积，譬如，一根名义上10gL的定量环，实际是9gL还是1lgL并不重要，因为被测样品和校正样品的进样体积保持一致，在计算结果时误差都被抵消了。4、进样样品要求无微粒和能阻死针头及进样阀的物质，样品溶液均要用0．45~tm的滤膜过滤。防止微粒阻塞进样阀和减少对进样阀的磨损。为防止缓冲盐和其它残留物质留在进样系统中，每次结束后应冲洗进样器，通常用不含盐的稀释剂、水或不含盐的流动相冲洗，在进样阀的Load和Inject位置反复冲洗，再用无纤维纸擦净注射器针头的外侧。
