Determination of torasemide in biological fluids by HPLC pre-phenol-induced micellar extraction concentrating von V. A. Doroshchuk, N. A. Gonta, S. A. Kulichenko

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Atomic absorption determination of zinc and manganese in natural waters after cloud point preconcentrating von V. A. Doroshchuk, M. S. Mezhueva, S. A. Leljushok, S. A. Kulichenko

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Cloud point preconcentrating of micro-admixtures by non-ionic surfactant-rich phases von N. F. Kushchevskaja, A. N. Gorbachevskij, V. A. Doroshchuk, S. A. Kulichenko

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