Second-Order Data Obtained from Differential Pulse Voltammetry: Determination of Lead in River Water Using Multivariate Curve Resolution-Alternating Least-Squares (MCR-ALS)

2010 ◽  
Vol 22 (19) ◽  
pp. 2245-2253 ◽  
Author(s):  
Hamid Abdollahi ◽  
Mojtaba Kooshki
Keyword(s):  
Differential Pulse Voltammetry ◽  
Least Squares ◽  
River Water ◽  
Differential Pulse ◽  
Second Order ◽  
Alternating Least Squares ◽  
Multivariate Curve Resolution ◽  
Curve Resolution ◽  
Pulse Voltammetry

Second order advantage in the determination of amaranth, sunset yellow FCF and tartrazine by UV–vis and multivariate curve resolution-alternating least squares

2009 ◽  
Vol 655 (1-2) ◽  
pp. 38-42 ◽  
Author(s):  
Natalia Elizabeth Llamas ◽  
Mariano Garrido ◽  
María Susana Di Nezio ◽  
Beatriz Susana Fernández Band
Keyword(s):  
Least Squares ◽  
Second Order ◽  
Alternating Least Squares ◽  
Multivariate Curve Resolution ◽  
Sunset Yellow ◽  
Curve Resolution

Polarographic and voltammetric determination of genotoxic nitro derivatives of quinoline using mercury electrodes

2011 ◽  
Vol 76 (12) ◽  
pp. 1991-2004 ◽  
Author(s):  
Vlastimil Vyskočil ◽  
Ivan Jiránek ◽  
Aleš Daňhel ◽  
Jiří Zima ◽  
Jiří Barek ◽  
...  
Keyword(s):  
Differential Pulse Voltammetry ◽  
River Water ◽  
Mercury Electrode ◽  
Differential Pulse ◽  
Dropping Mercury Electrode ◽  
Separation And Preconcentration ◽  
Nitro Derivatives ◽  
Pulse Voltammetry ◽  
Derivatives Of

Electrochemical behavior of genotoxic nitro derivatives of quinoline, namely 5-nitroquinoline (5-NQ), 6-nitroquinoline (6-NQ) and 8-nitroquinoline (8-NQ), was investigated by DC tast polarography (DCTP) and differential pulse polarography (DPP), both at a classical dropping mercury electrode (DME), and by differential pulse voltammetry (DPV) and adsorptive stripping differential pulse voltammetry (AdSDPV), both at a miniaturized hanging mercury drop minielectrode (HMDmE), in buffered aqueous (for 5-NQ) or aqueous-methanolic (for 6-NQ and 8-NQ) solutions. Optimum conditions were found for the determination of 5-NQ, 6-NQ and 8-NQ by DCTP at DME (with limits of quantification, LQ ≈ 9 × 10–7, 3 × 10–7 and 2 × 10–6 mol l–1, respectively), by DPP at DME (LQ ≈ 1 × 10–8, 9 × 10–8 and 1 × 10–7 mol l–1, respectively), by DPV at HMDmE (LQ ≈ 2 × 10–8, 1 × 10–7 and 1 × 10–7 mol l–1, respectively), and by AdSDPV at HMDmE (LQ ≈ 1 × 10–8 mol l–1 for 8-NQ; an attempt at increasing the sensitivity using AdSDPV at HMDmE was not successful for 5-NQ and 6-NQ). Practical applicability of the developed methods was verified on the direct determination of the studied compounds in model samples of drinking and river water in submicromolar concentrations and on the determination in model samples of drinking and river water using preliminary separation and preconcentration by solid phase extraction (SPE) in nanomolar concentrations.

Potentiality of PARAFAC approaches for simultaneous determination of N-acetylcysteine and acetaminophen based on the second-order data obtained from differential pulse voltammetry

Talanta ◽  
2019 ◽  
Vol 192 ◽  
pp. 439-447 ◽  
Author(s):  
Khalil Zarnousheh Farahani ◽  
Ali Benvidi ◽  
Masoud Rezaeinasab ◽  
Saleheh Abbasi ◽  
Mohammad Abdollahi-Alibeik ◽  
...  
Keyword(s):  
Differential Pulse Voltammetry ◽  
Simultaneous Determination ◽  
Differential Pulse ◽  
Second Order ◽  
Pulse Voltammetry
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