A novel catalytic kinetic method for the determination of mercury(ii) in water samples

Abstract

<p>Mercury(<sc>ii</sc>) ions act as catalyst in the substitution of cyanide ion in hexacyanoruthenate(<sc>ii</sc>) by pyrazine (Pz) in an acidic medium.</p>

Kinetic study of Hg(II)‐promoted substitution of cyanide from hexacyanoferrate(II) in an anionic surfactant medium by 2,2′‐bipyridine

“…The ultimate application of the Hg 2+ catalyzed ligand exchange reaction, for the trace level determination of various drugs and Hg 2+ , makes studying the effect of [Hg 2+ ] on the substitution rate to be highly important (Agarwal et al, 2020; Srivastava, 2021a,b). The absorbance at a specific reaction time (10, 15, and 20 min) was measured after the mixing of reactants under the optimized reaction conditions with [Hg 2+ ] being varied.…”

Design and Characterization of Electrochemical Sensor for the Determination of Mercury(II) Ion in Real Samples Based upon a New Schiff Base Derivative as an Ionophore

“…The developed Hg 2+ –SE offers much better features than the electrodes mentioned in the comparison. Moreover, the analytical performance of the proposed electrode in terms of sensitivity, recovery, and linear concentration range was compared with different analytical techniques [ 63 , 64 , 65 , 66 , 67 , 68 , 69 ]. The Hg 2+ –SE designed in the present study provides better performance than some of the methods mentioned in Table 6 without the need to use the extraction or preconcentration methodology.…”

Magnetized chitosan nanocomposite as an effective adsorbent for the removal of methylene blue and malachite green dyes

“…Water is polluted by the inevitable discharge of industrial wastewater comprising numerously non-biodegradable and hazardous inorganic and organic contaminants like heavy metals, pesticides, dyes, cosmetics, and pharmaceuticals, etc. (Lehman et al 2011;Kant 2012;Zhao et al 2013Zhao et al , 2015Tomar et al 2014;Nasar 2015, 2019;Ippolito and Fait 2019;Quesada et al 2019;Jain et al 2019Jain et al , 2020Agarwal et al 2020). Among these contaminants, the discharge of dyeing sewage from various industries have triggered visual severe water pollution and reduces the water transparency due to extremely high color strength, and leading to a corresponding rise in the concentration of organic matter in water bodies.…”