Synthesis and application of XAD-2/Me-BTAP resin for on-line solid phase extraction and determination of trace metals in biological samples by FAAS

Determination of copper in biological samples by flame atomic absorption spectrometry after precipitation with Me-BTAP

“…Further increase in the pH from 9.0 resulted in a significant decrease in the recovery because the Cu (II) ions are easily complexed by ammonium, restraining their precipitation. It is also observed that the values of pH that they had resulted in bigger efficiencies of copper recovery are in agreement with the values favorable to the formation of the complex Cu-Me-BTAP (Lemos et al 2006a). Thus an acetate buffer with pH 6.0 was selected for further work.…”

SP70-α-benzoin oxime chelating resin for preconcentration–separation of Pb(II), Cd(II), Co(II) and Cr(III) in environmental samples

“…The comparison of proposed method with other solid phase extraction methods is summarized in Table 8. The preconcentration factor of proposed solid phase extraction method was generally high than some literature [18,[32][33][34][35][36][37][38][39].…”

Simultaneous flow injection preconcentration of lead and cadmium using cloud point extraction and determination by atomic absorption spectrometry

“…Flow injection (FI) separation/preconcentration systems, which use a mini-column packed with a solid support loaded or functionalized with complexing reagents, has been much used to increase sensitivity and selectivity in the analytical determination of trace metals [17,18]. FI preconcentration procedures offer some very favorable features in relation to batch methods, because they comprise a cheap, versatile, and easy operation system that improves the analytical frequency and reproducibility.…”