TY - JOUR
T1 - Sulfonylcalix[4]arenetetrasulfonate as pre-column chelating reagent for selective determination of aluminum(III), iron(III), and titanium(IV) by ion-pair reversed-phase high-performance liquid chromatography with spectrophotometric detection
AU - Matsumiya, Hiroaki
AU - Iki, Nobuhiko
AU - Miyano, Sotaro
N1 - Funding Information:
This work was supported by the JSPS Research for the Future Program from the Japan Society for Promotion of Science and the 21st Century COE Program “Nature-Guided Materials Processing” from the Ministry of Education, Japan. We also greatly thank Professor Hitoshi Hoshino (Graduate School of Engineering, Tohoku University) for helpful discussion and lending us the HPLC set-up.
PY - 2004/2/6
Y1 - 2004/2/6
N2 - Sulfonylcalix[4]arenetetrasulfonate (SO2CAS) has been examined as a pre-column chelating reagent for ultratrace determination of metal ions by ion-pair reversed-phase high-performance liquid chromatography with spectrophotometric detection. Metal ions were converted into the SO 2CAS chelates in an acetic buffer solution (pH 4.7). The chelates were injected onto a n-octadecylsilanized silica-type Chromolith™ Performance RP-18e column and were eluted using a methanol (50 wt.%)-water eluent (pH 5.6) containing tetra-n-butylammonium bromide (7.0 mmol kg -1), acetate buffer (5.0 mmol kg-1), and disodium ethylendiamine-N,N,N′,N′-tetraacetate (0.10 mmol kg-1). Under the conditions used, Al(III), Fe(III), and Ti(IV) were selectively detected among 21 kinds of metal ions [Al(III), Ba(II), Be(II), Ca(II), Cd(II), Co(II), Cr(III), Cu(II), Fe(III), Ga(III), Hf(IV), In(III), Mg(II), Mn(II), Mo(VI), Ni(II), Pb(II), Ti(IV), V(V), Zn(II), and Zr(IV)]. The detection limits on a 3σ blank basis were 8.8 nmol dm-3 (0.24 ng cm -3) for Al(III), 7.6 nmol dm-3 (0.42 ng cm-3) for Fe(III), and 17 nmol dm-3 (0.80 ng cm-3) for Ti(IV). The practical applicability of the proposed method was checked using river and tap water samples.
AB - Sulfonylcalix[4]arenetetrasulfonate (SO2CAS) has been examined as a pre-column chelating reagent for ultratrace determination of metal ions by ion-pair reversed-phase high-performance liquid chromatography with spectrophotometric detection. Metal ions were converted into the SO 2CAS chelates in an acetic buffer solution (pH 4.7). The chelates were injected onto a n-octadecylsilanized silica-type Chromolith™ Performance RP-18e column and were eluted using a methanol (50 wt.%)-water eluent (pH 5.6) containing tetra-n-butylammonium bromide (7.0 mmol kg -1), acetate buffer (5.0 mmol kg-1), and disodium ethylendiamine-N,N,N′,N′-tetraacetate (0.10 mmol kg-1). Under the conditions used, Al(III), Fe(III), and Ti(IV) were selectively detected among 21 kinds of metal ions [Al(III), Ba(II), Be(II), Ca(II), Cd(II), Co(II), Cr(III), Cu(II), Fe(III), Ga(III), Hf(IV), In(III), Mg(II), Mn(II), Mo(VI), Ni(II), Pb(II), Ti(IV), V(V), Zn(II), and Zr(IV)]. The detection limits on a 3σ blank basis were 8.8 nmol dm-3 (0.24 ng cm -3) for Al(III), 7.6 nmol dm-3 (0.42 ng cm-3) for Fe(III), and 17 nmol dm-3 (0.80 ng cm-3) for Ti(IV). The practical applicability of the proposed method was checked using river and tap water samples.
KW - Aluminum
KW - Calixarene
KW - HPLC
KW - Iron
KW - Spectrophotometry
KW - Titanium
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U2 - 10.1016/j.talanta.2003.08.001
DO - 10.1016/j.talanta.2003.08.001
M3 - Article
C2 - 18969300
AN - SCOPUS:0347596634
VL - 62
SP - 337
EP - 342
JO - Talanta
JF - Talanta
SN - 0039-9140
IS - 2
ER -