Solid phase extraction of Cu (II), Pb (II), Fe (III), Co (II), and Cr (III) on chelex‐100 column prior to their flame atomic absorption spectrometric determinations
M Soylak - Analytical Letters, 2004 - Taylor & Francis
A solid phase extraction procedure for flame atomic absorption spectrometric determination
of Cu (II), Pb (II), Fe (III), Co (II), and Cr (III) is proposed on Chelex‐100 resin. The sample …
of Cu (II), Pb (II), Fe (III), Co (II), and Cr (III) is proposed on Chelex‐100 resin. The sample …
[HTML][HTML] Aplicação e modificação química da sílica gel obtida de areia
AGS Prado, EA Faria, PM Padilha - Química Nova, 2005 - SciELO Brasil
The silica gel was obtained from sand and its surface was modified with POCl3 to produce
Si-Cl bonds on the silica surface. Ethylenediamine was covalently bonded onto the …
Si-Cl bonds on the silica surface. Ethylenediamine was covalently bonded onto the …
Utility of solid-phase extraction coupled with spectrophotometry for a novel green nano determination of copper (II) using 4-((furan-2-ylmethylene) amino)-5-methyl-4H …
ABSTRACT A highly sensitive, selective and accurate method has been developed to
determine ultra trace amounts of copper (II) by solid-phase extraction (SPE). The following …
determine ultra trace amounts of copper (II) by solid-phase extraction (SPE). The following …
[PDF][PDF] Attachment of 2, 2-bipyridine onto a silica gel for application as a sequestering agent for copper, cadmium and lead ions from an aqueous medium
E Souza, V Cristante, P Padilha, S Jorge… - Polish Journal of …, 2011 - sciendo.com
A method was developed to attach 2, 2-bipyridine (BP) onto a silica gel surface by a two-
step reaction. The first step consisted of a reaction between the matrix and a silylating agent …
step reaction. The first step consisted of a reaction between the matrix and a silylating agent …
[HTML][HTML] Influence of the synthesis conditions on the characteristics and metal adsorption properties of the 3-(1, 4-phenylenediamine) propylsilica xerogel
The hybrid 3-(1, 4-phenylenediamine) propylsilica xerogel was obtained starting from two
different organic precursor quantity (5 and 8 mmol) to 22 mmol of TEOS, in the synthesis …
different organic precursor quantity (5 and 8 mmol) to 22 mmol of TEOS, in the synthesis …
[HTML][HTML] Use of modified silica gel for concentrating Pb (II) and Cd (II) occurring in form of complex anions
RT Déniz, M Seijo, Z Fernández, AM Peron… - Eclética …, 2007 - SciELO Brasil
The performance of silica gel, modified by the impregnation with a high molecular weight
quaternary amine (triethyl octadecyl ammonium iodide), used for the concentration of heavy …
quaternary amine (triethyl octadecyl ammonium iodide), used for the concentration of heavy …
[PDF][PDF] Validação de Métodos de Lavagem de Vidraria Utilizando Vitamina B12 como Marcador de Limpeza
AN Negrao, C Buba, T Barboza… - … American Journal of …, 2007 - latamjpharm.org
O objetivo do trabalho foi a validação de procedimentos de limpeza de vidrarias, utilizando
determinação espectrofotométrica de resíduo de vitamina B12, como marcador, para …
determinação espectrofotométrica de resíduo de vitamina B12, como marcador, para …
[PDF][PDF] Castor leaf powder as a biosorbent for Cu (II) removal and preconcentration of natural water samples
MS Pereira, AE Martins, AO Jorgetto… - Environmental …, 2018 - eemj.icpm.tuiasi.ro
This paper describes the preparation and use of a low cost biosorbent made of castor leaves
for the extraction of Cu (II) from an aqueous medium. The biosorbent was characterized by …
for the extraction of Cu (II) from an aqueous medium. The biosorbent was characterized by …