نتایج جستجو برای: based single drop microextraction

تعداد نتایج: 3626761  

2011
Saeid Nazari

The liquid phase microextraction (LPME) was combined with the modified Graphite furnace atomic absorption spectrometry (GF-AAS) for determination of lead in the water and solid samples. In a preconcentration step, lead was extracted from a 2 ml of its aqueous sample in the pH = 5 as lead-Pyrimidine-2-thiol cationic complex into a 4 μl drop of 1,2 dichloroethane and ammonium tetraphenylborate as...

2016
Xiao-Chao Zhang Zhen-Wei Wei Xiao-Yun Gong Xing-Yu Si Yao-Yao Zhao Cheng-Dui Yang Si-Chun Zhang Xin-Rong Zhang

Integrating droplet-based microfluidics with mass spectrometry is essential to high-throughput and multiple analysis of single cells. Nevertheless, matrix effects such as the interference of culture medium and intracellular components influence the sensitivity and the accuracy of results in single-cell analysis. To resolve this problem, we developed a method that integrated droplet-based microe...

Journal: :Journal of nonlinear and variational analysis 2023

Hosein Abolghasemi, Maryam Zaheri Mohammad Ghannadi Maragheh Parisa Zaheri

Drop size distribution in a mixer-settler is an essential design parameter, as obtaining drop size distribution will result in optimum performance of equipment. In this paper for obtaining drop size, several experiments have been performed with a single stage horizontal mixer-settler. A video technique has been used in order to measure the drop size in the mixer-settler with the help of a digit...

2016
Naiwen Cui Huidan Zhang Nils Schneider Ye Tao Haruichi Asahara Zhiyi Sun Yamei Cai Stephan A. Koehler Tom F. A. de Greef Alireza Abbaspourrad David A. Weitz Shaorong Chong

Drop-based microfluidics have recently become a novel tool by providing a stable linkage between phenotype and genotype for high throughput screening. However, use of drop-based microfluidics for screening high-affinity peptide binders has not been demonstrated due to the lack of a sensitive functional assay that can detect single DNA molecules in drops. To address this sensitivity issue, we in...

Journal: :journal of the iranian chemical research 0
majid ramezani department of chemistry, faculty of science, islamic azad university – arak branch, arak, iran sara rahmani department of chemistry, faculty of science, islamic azad university – arak branch, arak, iran

an efficient, rapid, simple, and highly selective dispersive liquid–liquid microextraction basedon solidification of floating organic drop (dllme-sfod), combined with flame atomicabsorption spectrometry was developed for preconcentration and determination of trace amountsof cobalt in water samples. in this method, an appropriate mixture of acetone and1-undecanol was injected rapidly into the aq...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2011
Hiroyuki Kataoka

Sample preparation is important for the isolation and concentration of desired trace components from complex matrices. Sample preparation is the most labor-intensive and error-prone process in analytical methodology, and greatly influences the reliable and accurate determination of analytes. The integration of sample preparation with various analytical instruments is most conveniently achieved ...

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