On-line complexation/cloud point preconcentration for the sensitive determination of dysprosium in urine by flow injection inductively coupled plasma-optical emission spectrometry.

@article{Ortega2003OnlineCP,
  title={On-line complexation/cloud point preconcentration for the sensitive determination of dysprosium in urine by flow injection inductively coupled plasma-optical emission spectrometry.},
  author={Claudia Ortega and Soledad Cerutti and Roberto A. Olsina and Maria Fernanda Gouveia da Silva and Luis Dante Mart{\'i}nez},
  journal={Analytical and bioanalytical chemistry},
  year={2003},
  volume={375 2},
  pages={270-4}
}
An on-line dysprosium preconcentration and determination system based on the hyphenation of cloud point extraction (CPE) to flow injection analysis (FIA) associated with ICP-OES was studied. For the preconcentration of dysprosium, a Dy(III)-2-(5-bromo-2-pyridylazo)-5-diethylaminophenol complex was formed on-line at pH 9.22 in the presence of nonionic micelles of PONPE-7.5. The micellar system containing the complex was thermostated at 30 degrees C in order to promote phase separation, and the… CONTINUE READING

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