scholarly journals Solid-phase extraction and fluorimetric determination of Zn(II) in natural water using novel adsorbent based on silica modified with polyhexamethylene guanidine and Ferron

2019 ◽  
pp. 1-13
Author(s):  
Svetlana L. Didukh-Shadrina ◽  
Olga V. Buyko ◽  
Vladimir N. Losev
Keyword(s):  
Solid Phase Extraction ◽  
Natural Water ◽  
Solid Phase ◽  
Phase Extraction ◽  
Fluorimetric Determination ◽  
Polyhexamethylene Guanidine

scholarly journals Determination of Flumorph Residues in Vegetables, Soil, and Natural Water by Solid-Phase Extraction Cleanup and High-Performance Liquid Chromatography with UV Detection

2008 ◽  
Vol 91 (6) ◽  
pp. 1459-1466 ◽  
Author(s):  
Ji-Ye Hu ◽  
Yu-Chao Zhang ◽  
Hai Yan
Keyword(s):  
Solid Phase Extraction ◽  
Natural Water ◽  
High Performance ◽  
Solid Phase ◽  
Residue Analysis ◽  
Reversed Phase ◽  
Uv Detection ◽  
Phase Extraction ◽  
Limit Of Quantification

Abstract A method for high-performance liquid chromatographic (HPLC) determination of flumorph residues in cucumber, tomato, soil, and natural water was developed and validated. Primary secondary amine or octadecylsilyl (C18) solid-phase extraction cartridges were used for sample preparation. Reversed-phase HPLC with UV detection was used for separation and quantification of the pesticide. The combined cleanup and chromatographic method steps were sensitive and reliable for simultaneous determination of residues of the 2 isomers of flumorph in the studied samples. This method is characterized by recovery >97.9, coefficient of variation <6.2, and limit of quantification of 0.01 mg/kg, in agreement with directives for method validation in residue analysis. Flumorph residues in the samples were further confirmed by HPLC/mass spectrometry. The proposed method is fast, easy to perform, and could be used for monitoring of pesticide residues.

scholarly journals Automatic solid-phase extraction by programmable flow injection coupled to chromatographic fluorimetric determination of fluoroquinolones

2018 ◽  
Vol 10 (18) ◽  
pp. 2180-2186 ◽  
Author(s):  
Patricia S. Peixoto ◽  
Eduarda M. P. Silva ◽  
Marcelo V. Osório ◽  
Luisa Barreiros ◽  
José L. F. C. Lima ◽  
...  
Keyword(s):  
Sample Preparation ◽  
Solid Phase Extraction ◽  
Flow Injection ◽  
Solid Phase ◽  
Phase Extraction ◽  
Environmental Waters ◽  
Fluorimetric Determination

Automatic sample preparation targeting preconcentration of fluoroquinolones present in environmental waters.

Sign in / Sign up

Export Citation Format

Share Document