Preconcentration and speciation of chromium in waters using solid-phase extraction and atomic absorption spectrometry

Preconcentration and Speciation of Chromium in Water Samples by Atomic Absorption Spectrometry after Cloud-Point Extraction

“…For this purpose, various separation and preconcentration methods, such as liquid-liquid extraction, 2,3 coprecipitation, 4,5 ion exchange, 6-8 adsorption [9][10][11][12] and solid-phase extraction, 10,[13][14][15] have been developed. In recent years, several methods for the preconcentration and separation of Cr(III) and Cr(VI) have been developed by using a micelle-mediated methodology.…”

“…15,16 Compared with the recent developments in the preconcentration, speciation and determination of Cr(III) and Cr(VI), such as solid-phase extraction and cloud-point extraction, the proposed method is simple and sensitive. 10,[12][13][14][15][16][17]21,22 In the present work we developed a CPE procedure for the speciation of chromium.…”

Chromium Extraction by Microemulsions in Two- And Three-Phase Systems

“…Chromium is released into the environment by several industrial activities, such as: steel mills, electroplating, tanning, chemical manufacturing, pulp and paper manufacturing, wood preservation, dyes, ceramics, textiles, and coal beneficiation among others. (Lofrano et al, 2013;Sharma & Adholeya, 2011;Gayathri & Senthil Kumar, 2010;Stasinakis et al, 2003;Kotás & Stasicka, 2000;Selvi et al, 2001;Adriá-Cerezo et al, 2000;Parks et al, 2004).…”

Adsorption of F<sup>-</sup>, NO<sub>3</sub><sup>-</sup> and SO<sub>4</sub><sup>2-</sup> on AFN Anionic Membrane: Kinetics and Thermodynamics Studies

“…Fluoride, nitrate and sulfate removal can be carried out by membrane separation, ion exchange, adsorption process, chemical treatment, etc. [7][8][9]. Amongst them, adsorption is simpler and effective for this treatment.…”

“…Amongst them, adsorption is simpler and effective for this treatment. Resins and membranes are considered the most promising adsorbents [8,9].…”