نتایج جستجو برای: icp ms dating

تعداد نتایج: 146898  

2005
Feimeng Zhou

Electrochemistry (EC) combined on-line with atomic mass spectrometry (MS) and related techniques (e.g., inductively coupled plasma atomic emission spectrometry, ICP–AES) affords an avenue for analysis of metals present at ultratrace levels and the effective elimination of matrix effects detrimental to atomic MS and spectrometric techniques. In addition, electrode reactions involving inorganic s...

2013
Ting Zhang Yueshuai Guo Xuejiang Guo Tao Zhou Daozhen Chen Jingying Xiang Zuomin Zhou

INTRODUCTION Intrahepatic cholestasis of pregnancy (ICP) usually occurs in the third trimester and associated with increased risks in fetal complications. Currently, the exact cause of this disease is unknown. In this study we aim to investigate the potential proteins in placenta, which may participate in the molecular mechanisms of ICP-related fetal complications using iTRAQ-based proteomics a...

2012
Armando Durazo Tarun Anumol Shane A. Snyder

The determination of iopromide in environmental waters has been accomplished using an Agilent 7700x ICP-MS coupled to an Agilent 1260 LC. The use of High Matrix Introduction (HMI) technology allows for prolonged operation with a sodium hydroxide (NaOH) eluent, and the Octopole Reaction System (ORS3) in helium gas mode reduces polyatomic interferences on iodine (m/z 127). Determination of ioprom...

2016
Antonín Pařízek Martin Hill Michaela Dušková Libor Vítek Marta Velíková Radmila Kancheva Patrik Šimják Michal Koucký Zuzana Kokrdová Karolína Adamcová Andrej Černý Zdeněk Hájek Luboslav Stárka

Intrahepatic cholestasis of pregnancy (ICP) is a common liver disorder, mostly occurring in the third trimester. ICP is defined as an elevation of serum bile acids, typically accompanied by pruritus and elevated activities of liver aminotransferases. ICP is caused by impaired biliary lipid secretion, in which endogenous steroids may play a key role. Although ICP is benign for the pregnant woman...

2013
Daigo Iwahata Kazuki Nakamura Rie Yamada Hiroshi Miyano Naoyuki Yamada

We have developed a novel metal tag, bis(ethylenediamine)-4'-methyl-4-carboxybipyridine-ruthenium N-succinimidyl ester (ECRS) for sensitive analysis of amino acids using high performance liquid chromatography/inductively coupled plasma mass spectrometry (HPLC/ICP-MS). ECRS is a functional reagent, containing an ester group at one end that can be activated to bind to amino group and a chelated r...

2014
Chady Stephan Ken Neubauer

Nanotechnology is an emerging and rapidly growing field whose dynamics and prospects pose many great challenges to scientists and engineers. Nanoparticles are being used in many materials and products, including coatings (on plastic, glass and clothing), sunscreen, antimicrobial bandages and clothing, MRI contrast agents, biomedical elemental tags and fuel additives, only to name few. However, ...

2017
Cheri M. Ackerman Peter K. Weber Tong Xiao Bao Thai Tiffani J. Kuo Emily Zhang Jennifer Pett-Ridge Christopher J. Chang

Supplemental Figures: Figure S1. Optimization of fixation and coating conditions for metal imaging. Figure S2. Standard curves for matrix-matched standards for copper LA-ICP-MS and nanoSIMS. Figure S3. Zinc analysis of Calgw71 and WT embryos by LA-ICP-MS. Figure S4. Standard curves for matrix-matched standards for zinc LA-ICP-MS and quantification of zinc images. Figure S5. Selection of regions...

Journal: :Analytical and bioanalytical chemistry 2010
Ilia Rodushkin Emma Engström Douglas C Baxter

In theory, state of the art inductively coupled plasma mass spectrometry (ICP-MS) instrumentation has the prerequisite sensitivity to carry out multi-elemental trace analyses at sub-ng L-1 to sub-pg L-1 levels in solution. In practice, constraints mainly imposed by various sources of contamination in the laboratory and the instrument itself, and the need to dilute sample solutions prior to anal...

2013

Determination of the radionuclide iodine 129 using ICP-MS has been improved by the use of an Octopole Reaction System (ORS) ICP-MS, operated in oxygen cell mode. Oxygen reaction gas removes the background signal at m/z 129, which is due to the presence of Xe as an impurity in the Ar plasma gas and to the polyatomic ion IH2. NIST SRM standards with different 129I/127I ratios and at multiple conc...

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