A simple and rapid electrochemical sensing method for metribuzin determination in tap and river water samples

2016 ◽  
Vol 8 (12) ◽  
pp. 2698-2705 ◽  
Author(s):  
Zorica Stojanović ◽  
Ana Đurović ◽  
Snežana Kravić ◽  
Nada Grahovac ◽  
Zvonimir Suturović ◽  
...  
Keyword(s):  
Thin Film ◽  
River Water ◽  
Water Samples ◽  
Mercury Electrode ◽  
Electrochemical Sensing ◽  
River Water Samples ◽  
Electroanalytical Method

This paper describes an electroanalytical method for the determination of metribuzin using a thin film mercury electrode by chronopotentiometry.

scholarly journals Development and Validation of Chronopotentiometric Method for Imidacloprid Determination in Pesticide Formulations and River Water Samples

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Ana Đurović ◽  
Zorica Stojanović ◽  
Snežana Kravić ◽  
Nada Grahovac ◽  
Vojislava Bursić ◽  
...  
Keyword(s):  
Thin Film ◽  
River Water ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Water Samples ◽  
Mercury Electrode ◽  
Carbon Electrode ◽  
River Water Samples ◽  
Pesticide Formulations ◽  
Experimental Parameters

A new electrochemical method for determination of imidacloprid using chronopotentiometry on thin film mercury and glassy carbon electrode was presented. The most important experimental parameters of chronopotentiometry were examined and optimized with respect to imidacloprid analytical signal. Imidacloprid provided well-defined reduction peak in Britton-Robinson buffer on thin film mercury electrode at −1.0 V (versus Ag/AgCl (KCl, 3.5 mol/L)) and on glassy carbon electrode at −1.2 V (versus Ag/AgCl (KCl, 3.5 mol/L)). The reduction time was linearly proportional to concentrations from 0.8 to 30.0 mg/L on thin film mercury electrode and from 7.0 to 70.0 mg/L on glassy carbon electrode. The detection limits were 0.17 mg/L and 0.93 mg/L for thin film mercury and glassy carbon electrode, respectively. The estimation of method precision as a function of repeatability and reproducibility showed relative standard deviations values lower than 3.73%. Recovery values from 97.3 to 98.1% confirmed the accuracy of the proposed method, while the constancy of the transition time with deliberated small changes in the experimental parameters indicated a very good robustness. A minor influence of possible interfering compounds proved good selectivity of the method. Developed method was applied for imidacloprid determination in commercial pesticide formulations and river water samples.

Modified paramagnetic beads in a microfluidic system for the determination of ethinylestradiol (EE2) in river water samples

2010 ◽  
Vol 25 (6) ◽  
pp. 1376-1381 ◽  
Author(s):  
Noelia A. Martínez ◽  
Rudolf J. Schneider ◽  
Germán A. Messina ◽  
Julio Raba
Keyword(s):  
River Water ◽  
Water Samples ◽  
Microfluidic System ◽  
River Water Samples ◽  
Paramagnetic Beads

Spectrophotometry determination of Congo red in river water samples using nanosilver

2012 ◽  
Vol 94 (10) ◽  
pp. 1886-1892 ◽  
Author(s):  
R. Sahraei ◽  
A. Farmany ◽  
S.S. Mortazavi ◽  
H. Noorizadeh
Keyword(s):  
River Water ◽  
Water Samples ◽  
Congo Red ◽  
River Water Samples

An in-line SPE strategy to enhance sensitivity in CE for the determination of pharmaceutical compounds in river water samples

2011 ◽  
Vol 32 (16) ◽  
pp. 2114-2122 ◽  
Author(s):  
Irene Maijó ◽  
Francesc Borrull ◽  
Marta Calull ◽  
Carme Aguilar
Keyword(s):  
River Water ◽  
Water Samples ◽  
Pharmaceutical Compounds ◽  
River Water Samples

scholarly journals Liquid Core Waveguide Spectrophotometry for the Sensitive Determination of Nitrite in River Water Samples

2006 ◽  
Vol 22 (7) ◽  
pp. 1017-1019 ◽  
Author(s):  
Hiromi TAKIGUCHI ◽  
Azusa TSUBATA ◽  
Makoto MIYATA ◽  
Tamao ODAKE ◽  
Hiroki HOTTA ◽  
...  
Keyword(s):  
River Water ◽  
Water Samples ◽  
Liquid Core ◽  
River Water Samples ◽  
Liquid Core Waveguide ◽  
Sensitive Determination
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