1) Liquid phase microextraction with back extraction
液相微萃取/后萃取
1.
Liquid phase microextraction with back extraction(LPME/BE) based on porous hollow fibres coupled with high performance liquid chromatography was developed for the determination of oxymatrine and matrine in Sophora flavescens Ait.
建立了液相微萃取/后萃取-高效液相色谱法测定中药苦参、复方苦参注射液中氧化苦参碱和苦参碱含量的方法。
2) liquid phase micro-extraction with non-aqueous back extraction(LPME/NBE)
液相微萃取-非水后萃取
3) liquid-phase microextraction/nonaqueous back extraction
液相微萃取/非水后萃取
4) Liquid Phase Microextraction
液相微萃取
1.
The Technique and Application of Hollow Fiber Liquid Phase Microextraction;
中空纤维液相微萃取技术及其应用进展
2.
Extraction of citric acid in multi-matrix by liquid phase microextraction;
复杂基质中柠檬酸的液相微萃取
3.
Determination of dichloromethane and trichloromethane residues in ranitidine hydrochloride by headspace liquid phase microextraction coupled with gas chromatography
顶空液相微萃取-气相色谱法测定盐酸雷尼替丁中二氯甲烷和三氯甲烷的残留量
5) Liquid phase micro-extraction
液相微萃取
1.
For each LPME operation mode,the recent developments of liquid phase micro-extraction were reviewed in terms of basic principle and mass transfer model.
依据有机溶剂的状态、装置特点和分配相的数目对液相微萃取进行了分类。
2.
A novel method for fast separate and enrichment imidacloprid in paddy,leaf,water and soil was established by using high performance liquid chromatography(HPLC) coupled with a three-phase hollow fiber based liquid phase micro-extraction(TP-HF-LPME) technique for sample preparation.
研究了基于中空纤维的动态三相液相微萃取(LPME),并首次将其应用到稻谷、稻叶、田水和土壤中吡虫啉农药残留的快速分离富集。
6) liquid-phase microextraction
液相微萃取
1.
Determination of clomifene citrate in biological matrices by liquid-phase microextraction combined with photochemical fluorescence high performance liquid chromatography;
液相微萃取光化学荧光高效液相色谱法测定生物样品中枸橼酸氯米芬顺反异构体的含量
2.
A novel method for the determination of three organophosphorous pesticides(phorate,parathion and poxim) in water samples has been developed using ionic liquid-based liquid-phase microextraction coupled with high performance liquid chromatography.
建立了基于1-丁基-3-甲基咪唑六氟磷酸盐离子液体的液相微萃取-高效液相色谱分析水样中甲拌磷、对硫磷和辛硫磷的方法。
3.
The liquid-phase microextraction(LPME),based on disposable hollow fiber,has been developed to be a new environmentally benign sample preparation technique which incorporate sampling,extraction and concentration into a single step.
基于中空纤维的液相微萃取集采样、萃取、浓缩于一体,具有成本低,溶剂用量少,易与高效液相色谱、气相色谱、毛细管电泳联用等特点。
补充资料：分部萃取
又称双溶剂萃取，利用两种互溶度很小的溶剂以实现液体混合物完善分离的萃取方法。通常从级联（或萃取塔）中部加入料液，从级联的两端分别加入两种溶剂（见图），使料液中的两种(或两组)组分，分别优先溶入一种溶剂中。与料液不甚互溶的溶剂称为萃取剂。萃取剂进口至料液进口间各级称为萃取段，其间进行一般的逆流萃取。与料液完全互溶的溶剂称为洗涤剂。洗涤剂进口至料液进口间各级称为洗涤段，实质上是难萃组分的反萃段。
对性质相近的组分作萃取分离时，依靠分配系数的差别只能取得一定程度的分离。分部萃取用洗涤剂对萃取液作部分反萃取，让难萃组分优先进入洗涤剂中。洗涤虽然使萃取液浓度下降，但难萃组分下降得更多，从而提高了组分的分离程度。不论在湿法冶金或石油炼制行业，都采用分部萃取来提高产品的纯度。
对性质相近的组分作萃取分离时，依靠分配系数的差别只能取得一定程度的分离。分部萃取用洗涤剂对萃取液作部分反萃取，让难萃组分优先进入洗涤剂中。洗涤虽然使萃取液浓度下降，但难萃组分下降得更多，从而提高了组分的分离程度。不论在湿法冶金或石油炼制行业，都采用分部萃取来提高产品的纯度。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条