Solid phase extraction coupled with a liquid waveguide capillary cell for simultaneous redox speciation analysis of dissolved iron in estuarine and coastal waters

2015 ◽  
Vol 7 (12) ◽  
pp. 4971-4978 ◽  
Author(s):  
Yaojin Chen ◽  
Yongming Huang ◽  
Sichao Feng ◽  
Dongxing Yuan
Keyword(s):  
Solid Phase Extraction ◽  
Coastal Waters ◽  
Automatic System ◽  
Solid Phase ◽  
Speciation Analysis ◽  
Phase Extraction ◽  
Dissolved Iron ◽  
Liquid Waveguide Capillary Cell

An automatic system for simultaneous determination of Fe(ii) and Fe(ii + iii) in estuarine and coastal waters is established and applied in situ.

scholarly journals Determination of Trace Hydrazine in Environmental Water Samples by in situ Solid Phase Extraction

2017 ◽  
Vol 33 (4) ◽  
pp. 487-491 ◽  
Author(s):  
Toshikuni KATO ◽  
Shogo SUGAHARA ◽  
Takahiro KAJITANI ◽  
Yukiko SENGA ◽  
Michiko EGAWA ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Water Samples ◽  
Solid Phase ◽  
Environmental Water ◽  
Environmental Water Samples ◽  
Phase Extraction

Determination of gadolinium MRI contrast agents in fresh and oceanic waters of Australia employing micro-solid phase extraction, HILIC-ICP-MS and bandpass mass filtering

2021 ◽  
Vol 36 (4) ◽  
pp. 767-775
Author(s):  
Maximilian Horstmann ◽  
Raquel Gonzalez de Vega ◽  
David. P. Bishop ◽  
Uwe Karst ◽  
Philip A. Doble ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Contrast Agents ◽  
Extraction Method ◽  
Solid Phase ◽  
Speciation Analysis ◽  
Mri Contrast Agents ◽  
Phase Extraction ◽  
Mri Contrast ◽  
Icp Ms

Speciation analysis of Gd-based MRI contrast agents in fresh and oceanic waters employing an automatised micro-solid phase extraction method and HILIC-ICP-MS detection operating an increased mass bandpass.

scholarly journals Magnetic Solid-Phase Extraction and in Situ Derivatization for Determining Phytohormones and in Oilseeds by Ultra-Performance Liquid Chromatography-tandem Mass Spectrometry

2020 ◽  
Author(s):  
Zhoufei Luo ◽  
Mengwei Xu ◽  
Ruozhong Wang ◽  
Xiubing Liu ◽  
Langtao Xiao
Keyword(s):  
Solid Phase Extraction ◽  
Solid Phase ◽  
Magnetic Solid Phase Extraction ◽  
Ultra Performance Liquid Chromatography ◽  
Phase Extraction ◽  
Chromatography Tandem Mass Spectrometry ◽  
Liquid Chromatography Tandem Mass ◽  
Magnetic Solid

Abstract Background: Phytohormones are a group of naturally occurring signaling molecules which influence physiological processes of oil crops. Simultaneous determination of multiple phytohormones in oilseeds is still a challenge due to their trace concentrations, species diversity, and lipid interference. Therefore, a simple and selective method for the simultaneous determination of multiple phytohormones in oilseeds is urgently needed.Results: In this study, the Fe3O4@Ti3C2@β-CD nanoparticles were successfully synthesized and used for the first time as an adsorbent for the magnetic dispersive solid-phase extraction of phytohormones from oilseeds. The magnetic dispersive solid-phase extraction and in situ derivation by the addition of N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide (EDC) were ingeniously combined. This efficient pre-treatment method integrated the extraction, purification, and derivatization processes into one single step. Several parameters affecting the efficiency of extraction and derivatization were evaluated. Under the optimized analysis conditions, satisfactory methodological performance was achieved. High linearities (R2 > 0.9928) at three spiked levels, as well as the low matrix effect (ranged from ­16.63 % to 17.06 %) and limits of detection (0.89-13.62 pg/mL) were also obtained. The intra and inter-day relative standard deviations (RSDs) were less than 13.7 % and 11.6 %, respectively. The recoveries were ranged from 80.4 % to 115.1 %. This method was successfully employed for analyzing 12 phytohormones in different oilseeds samples.Conclusion: A simple and sensitive method based on the magnetic solid phase extraction integrated with in situ derivations for the profiling of 12 phytohormones, including 9 gibberellins (GAs), indole-3-acetic acid (IAA), abscisic acid (ABA), and jasmonic acid (JA) in a single rapeseed seed was developed by using ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS).

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