Publication Details |
| Reference Category | Journals |
| Title (Primary) | Analytical investigations of antimony-EDTA complexes and their use in speciation analysis |
| Author | Kolbe, F.; Mattusch, J.; Wennrich, R.; Weiss, H.; Sorkau, E.; Lorenz, W.; Daus, B. |
| Journal | Fresenius Environmental Bulletin |
| Year | 2012 |
| Department | ANA; GWS |
| Volume | 21 |
| Issue | 11c |
| Page From | 3453 |
| Page To | 3458 |
| Language | englisch |
| Abstract | An antimony speciation method was optimized
using HPLC-ICP-MS and EDTA as eluent with the aim to minimize the carbon
intake into the ICP-MS system and to lower the limits of detection. The
flow rate was significantly decreased to 0.4 mL min-1 by using a HPLC
column with a smaller inner diameter (Hamilton PRP X-100, 150 mm × 2.1
mm, 10 µm). This results in short retention times, low limits of
detection (< 50 ng L-1) and a considerable reduction of carbon
intake.However, different sensitivities were observed for Sb(V) and
Sb(III). For understanding this phenomenon, structural information of
the formed complexes were achieved via ESI-MS measurements. Antimonite
was proven to be mainly complexed as negatively charged [Sb(EDTA)]-
in-dependently from initial reference substance: Sb2O3, SbCl3 and
Sb(III)-tartrate. For a complete formation of the Sb(III)-EDTA complex a
pre-treatment of the samples and standard solutions was found to be
necessary. The addition of EDTA (final concentration 20 mM) results in
similar intensities for Sb(V) and Sb(III). The EDTA complex was proven
to be formed completely in less than two minutes and in water samples
with initial pH values of 2-11. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=13187 |
| Kolbe, F., Mattusch, J., Wennrich, R., Weiss, H., Sorkau, E., Lorenz, W., Daus, B. (2012): Analytical investigations of antimony-EDTA complexes and their use in speciation analysis Fresenius Environ. Bull. 21 (11c), 3453 - 3458 |
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