Electrochemical determination of trace mercury in aqueous solution

1980 ◽  
Vol 52 (2) ◽  
pp. 358-360 ◽  
Author(s):  
Danton D. Nygaard
Keyword(s):  
Aqueous Solution ◽  
Electrochemical Determination

scholarly journals Linear sweep polarographic determination of nucleic acids using acridine orange as a bioprobe

2007 ◽  
Vol 72 (11) ◽  
pp. 1085-1094 ◽  
Author(s):  
Wei Sun ◽  
Na Zhao ◽  
Xianlong Yuan ◽  
Kui Jiao
Keyword(s):  
Aqueous Solution ◽  
Acridine Orange ◽  
Electrochemical Method ◽  
Electrochemical Determination ◽  
Determination Method ◽  
Linear Regression Equation ◽  
Peak Potential ◽  
Linear Sweep ◽  
Buffer Solution

The interaction of acridine orange (AO) with double-stranded (ds) DNA in aqueous solution was investigated by linear sweep polarography (LSP) on a dropping mercury working electrode (DME). In pH 2.5 Britton-Robinson (B-R) buffer solution, AO had a sensitive linear sweep polarographic reductive peak at -0.89 V (vs. SCE), which could be greatly inhibited by the addition of dsDNA, with a positive shift of the peak potential. Based on the decrease of the reductive peak current, a new quantitative electrochemical determination method for dsDNA was developed with a linear range of 2.0?20.0 mg l-1 and the linear regression equation: ?Ip" (nA) = 111.90 C (mg l-1)+125.32 (n = 9, ? = 0.997). The influences of commonly co-existing substances, such as metal ions, amino acid, etc., on the determination were also investigated. The method is sensitive, rapid and simple with good selectivity. The new proposed method was further applied to the detection of RNA and three synthetic samples containing dsDNA with satisfactory results. The binding number and the equilibrium constant between dsDNA and AO were calculated by an electrochemical method.

Electrochemical Determination of Neomycin and Norfloxacin at a Novel Polymer Nanocomposite Electrode in Aqueous Solution

2017 ◽  
Vol 50 (12) ◽  
pp. 1887-1896 ◽  
Author(s):  
Siyabulela Hamnca ◽  
Lisebo Phelane ◽  
Emmanuel Iwuoha ◽  
Priscilla Baker
Keyword(s):  
Aqueous Solution ◽  
Polymer Nanocomposite ◽  
Electrochemical Determination

Immobilized copper ions on MWCNTS-Chitosan thin film: Enhanced amperometric sensor for electrochemical determination of diclofenac sodium in aqueous solution

2017 ◽  
Vol 42 (31) ◽  
pp. 19951-19960 ◽  
Author(s):  
Md Shalauddin ◽  
Shamima Akhter ◽  
Samira Bagheri ◽  
Mohd Sayuti Abd Karim ◽  
Nahrizul Adib Kadri ◽  
...  
Keyword(s):  
Thin Film ◽  
Aqueous Solution ◽  
Copper Ions ◽  
Diclofenac Sodium ◽  
Electrochemical Determination ◽  
Amperometric Sensor

Simultaneous electrochemical determination of nitrate and nitrite in aqueous solution using Ag-doped zeolite-expanded graphite-epoxy electrode

Talanta ◽  
2010 ◽  
Vol 83 (1) ◽  
pp. 66-71 ◽  
Author(s):  
Florica Manea ◽  
Adriana Remes ◽  
Ciprian Radovan ◽  
Rodica Pode ◽  
Stephen Picken ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Expanded Graphite ◽  
Electrochemical Determination ◽  
Nitrate And Nitrite

Electrochemical Determination of Diclofenac Sodium in Aqueous Solution on Cu-Doped Zeolite-Expanded Graphite-Epoxy Electrode

2010 ◽  
Vol 22 (17-18) ◽  
pp. 2058-2063 ◽  
Author(s):  
Florica Manea ◽  
Monica Ihos ◽  
Adriana Remes ◽  
Georgeta Burtica ◽  
Joop Schoonman
Keyword(s):  
Aqueous Solution ◽  
Diclofenac Sodium ◽  
Expanded Graphite ◽  
Electrochemical Determination

Siloxane-Crown Ether Polyamide Based Electrode for Electrochemical Determination of Lead(II) in Aqueous Solution

2012 ◽  
Vol 24 (10) ◽  
pp. 1995-2004 ◽  
Author(s):  
Ioana-Maria Simionca ◽  
Adina Arvinte ◽  
Rodinel Ardeleanu ◽  
Mariana Pinteala
Keyword(s):  
Aqueous Solution ◽  
Crown Ether ◽  
Electrochemical Determination

A unique bimetallic MOF derived carbon–MWCNTs hybrid structure for selective electrochemical determination of lead ion in aqueous solution

2020 ◽  
Vol 158 ◽  
pp. 105271 ◽  
Author(s):  
Rui Zhao ◽  
Xingxing Wu ◽  
Yuxiang Gao ◽  
Yani Liu ◽  
Jiaojiao Gao ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Hybrid Structure ◽  
Electrochemical Determination ◽  
Lead Ion
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