Results 251 to 260 of about 381,051 (306)

Gradient Elution and Sample Pretreatment

1989
Previous chapters discussed problems related to the various LC system modules and the results obtained from LC analysis. This chapter covers two procedures that may or may not be used in your laboratory.
John W. Dolan, Lloyd R. Snyder
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Metal oxides in sample pretreatment

TrAC Trends in Analytical Chemistry, 2016
Abstract Sample pretreatment is a fundamental and essential step in almost all analytical procedures, especially for the analysis of biological and environmental samples with complex matrix. In the past decades, with the advantages of good selectivity, high binding capacity, and good stability, metal oxides have been applied in sample pretreatment in
Jing Xu, Pin Wu, Er-Cui Ye, Bi-Feng Yuan, Yu-Qi Feng   +4 more
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Development of sample pretreatment approach and technology for peptidome

Chinese Journal of Chromatography, 2013
As a branch of proteomics, peptidome has been extensively applied in biomarker discovery, early diagnosis and pharmacy. In the research of peptidome, sample pretreatment plays a vital role. Here, we review the pretreatment approaches and techniques of peptidome, mainly including ultrafiltration, organic solvent precipitation, solid phase extraction and
Liming, Wei, Haojie, Lu, Pengyuan, Yang, Xin, Wu   +3 more
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Sample pretreatment on a microchip with an integrated electrospray emitter

ELECTROPHORESIS, 2006
AbstractThis study presents a microbead‐packed PDMS microchip with an integrated electrospray emitter for sample pretreatment prior to sheathless ESI‐MS. We prove the concept of analytical functions integrated onto a cm‐sized area of a single bulk material.
Peter, Lindberg, Andreas P, Dahlin, Sara K, Bergström, Sara, Thorslund, Per E, Andrén, Fredrik, Nikolajeff, Jonas, Bergquist   +6 more
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Sample Pretreatment and Cleanup

1986
Although one of the most versatile separation techniques, Liquid Chromatography still demands many analyte requirements, e.g.: clear and particle-free solutions miscibility of solvent with mobile phase sufficient solubility of solutes in mobile phase including any gradient program that might be necessary compatibility of solvent ...
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Approaches to sample pretreatment in the determination of perchlorate in real world samples

Analytica Chimica Acta, 2006
Perchlorate can be determined by the tandem technique of ion chromatography (IC) coupled to electrospray ionization mass spectrometry (ESI-MS). However, detection by ESI-MS can be compromised by the coelution of matrix components that can suppress the analyte signal.
R, Slingsby, C, Pohl, C, Saini
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Acculturation in a Pretreatment Sample of Latino Adolescents

Hispanic Journal of Behavioral Sciences, 2015
The Acculturation Rating Scale for Mexican Americans–II (ARSMA-II) is one of the most widely used measures of acculturation for Latinos. While the ARSMA-II is used quite often, there has been little research examining the latent factor structure of the measure.
Jason J. Burrow-Sánchez, Cynthia Ortiz-Jensen, Carolina Corrales, Kimberly Meyers   +3 more
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The first step is sample pretreatment

1999
On surveying recent developments in the field of atomic spectrometry, it becomes apparent that only half are concerned with improvements to the spectrometer, the detector or the atomizer. The other half are related to ways of automating sample handling, sample preparation, analyte-matrix separation etc. The reason is simple.
Gerhard Schlemmer, Bernard Radziuk
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Microfluidic devices for sample pretreatment and applications

Microsystem Technologies, 2009
With the fundamentals of microscale flow and species transport well developed, the recent trend in microfluidics has been to work towards the devices capable of dealing with ‘real’ crude samples directly. Before the real samples reaching the analytical step, it nearly requires significant pre-treated steps.
Xing Chen, Da-Fu Cui
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[Sample pretreatment in ion chromatography].

Se pu = Chinese journal of chromatography, 2010
Some sample pretreatment techniques used in ion chromatographic analysis such as absorption, extraction, dialysis, combustion, alkaline fusion, on-line preconcentration, neutralization and precipitation are summarized. A total of 130 references are cited.
Yunchang, Fan, Yan, Zhu
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