نتایج جستجو برای: assisted liquid

تعداد نتایج: 343521  

Journal: :Journal of physics 2023

Abstract Liquid-assisted grinding (LAG) has received wide attention in chemical synthesis field. Here, we reported that LAG provides a smart strategy to build macrocyclic cocrystal (MCC), achieving quick modification. The been assembled by electronegative permethylated pillar[5]arenes (EtP5) and electropositive ligands. We select three ligands with strong electron-deficient groups for preparati...

Journal: :Microchemical Journal 2021

This work describes the development of an HPLC-FLD methodology for separation five fluoroquinolones (ciprofloxacin, enrofloxacin, sarafloxacin, norfloxacin and levofloxacin) followed by optimization DLLME process clean-up preconcentration enrofloxacin in samples seawater river water. The mobile phase used chromatographic consisted methanol: phosphate buffer (NaHPO4 H2O 0.04 M pH 3 with H3PO4 85...

2014
Xu Ji Yuan Zhu Mingming Chen Longxing Su Anqi Chen Xuchun Gui Rong Xiang Zikang Tang

Modulation of grain boundary barrier in ZnO layer by polar liquid, was investigated in ZnMgO/ZnO heterostructures grown by plasma-assisted molecular beam epitaxy. Traditionally, surface adsorbates can only affect the surface atoms or surface electronic states. However, it was found that the electronic conduction property of ZnO far from the surface could be tailored obviously by the polar liqui...

2013
Xiaoji Cao Lingxiao Shen Xuemin Ye Feifei Zhang Jiaoyu Chen Weimin Mo

An effective and environmentally friendly method based on ionic liquid-based ultrasound-assisted emulsification microextraction (IL-USAEME) and high performance liquid chromatography (HPLC) has been developed for the determination of nine hormones including three glucocorticoids, one androgen and five progestogens in cosmetics. Several factors that affect the extraction efficiency, such as the ...

2015
Eva Alvarez de Eulate Debbie S Silvester Damien W M Arrigan

At the water-trihexyl(tetradecyl)phosphonium tris(pentafluoroethyl)trifluorophosphate ([P14,6,6,6][FAP]) ionic liquid interface, the unusual electrochemical transfer behavior of protons (H(+)) and deuterium ions (D(+)) was identified. Alkali metal cations (such as Li(+), Na(+), K(+)) did not undergo this transfer. H(+)/D(+) transfers were assisted by the hydrophobic counter anion of the ionic l...

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