Separation of tert-pontanol and water mixture by means of combination of liquid-liquid extraction rectification;
用液－液萃取与精馏联合法分离叔戊醇－水共沸物
The 11 organochlorine pesticides are determined by GC-ECD,and B(a)P is determined by HPLC-UV-FLD after sample pre-treatment by liquid-liquid extraction with n-hexane.
方法利用正己烷液-液萃取,以气相色谱法(电子捕获检测器)检测11种有机氯组分,高效液相色谱法(紫外、荧光检测器)检测苯并[a]芘。
In order to investigate the effects of magnetic field on the liquid-liquid extraction,the extraction process of acetone-water-methyl isobutyl ketone system was studied under magnetic field with different magnetic induction intensities.
为探讨磁场对液-液萃取过程的影响,本研究在不同磁感应强度的磁场中,对丙酮-水-甲基异丁基酮物系的萃取过程进行了研究。
Application of surface-treated high efficient BHB250Y type packing in liquid-liquid extraction;
经过表面处理的BHB250Y型填料在液液萃取中的应用
Improvement and application of the liquid-liquid extraction simulation program of natural products;
天然产物液液萃取模型计算程序的改进与应用
A static solid-phase microextraction procedure combined with liquid-liquid extraction was developed to determine the poly(dimethyl) siloxane(PDMS)-water partition coefficients(Kf) of polybrominated biphenyls(PBBs) by GC-MS.
结合静态固相微萃取与液液萃取方法,采用目标物的同分异构体作一对一的回收率指示物以确保水中目标物定量的准确性,建立了气相色谱-质谱测定6种多溴联苯在聚二甲基硅氧烷和水相间的分配系数(Kf)的方法。
Two methods for the determination of lewisite in soil after derivatization have been developed,namely,liquid-liquid extraction-gas chromatography(LLE-GC)and solid_phase micro_extraction-gas chromatography(SPME-GC).
建立了土壤基质中不同浓度的路易氏剂的测定方法,即液液萃取-气相色谱法(LLE-GC)和固相微萃取-气相色谱法(SPME-GC)。
METHODS: UNIFAC group contribution method is used for simulating the liquid liquid extraction, the proper extractants are chosen to carry out the experiments, and then the contents of the ginsenosides obtained with different extractants are detected through HPLC.
方法 :采用UNIFAC基团贡献法进行液液萃取模拟 ,选择合适的萃取剂体系进行实验 ,并通过HPLC检测不同萃取剂体系下的人参皂苷。
The behavior of solid-liquid extraction for Ce~(4+) and Tb~(3+) were studied taking paraffin with ceresin(PC) as organic solvent and 5,7-dichloro-8-hydroxyquinoline(HQ) as extracting agent.
以切片石蜡(PC)为稀释剂,5,7-二氯-8-羟基喹啉(HQ)为萃取剂,研究了铈(Ce4+)和铽(Tb3+)的固-液萃取性能。
A modified version of base extraction was adopted to separate the acidic compounds,primarily naphthenic acids,in Duba crude oil.
采用改进的碱液萃取方法分离杜巴原油中的酸性化合物(主要是环烷酸),通过高分辨质谱分析萃取过程中不同组分酸性化合物组成,以研究碱萃取前后酸性化合物的分布与组成特征。