Petya Racheva

A centrifuge-less cloud point extraction-spectrophotometric determination of copper(II) using 6-hexyl-4-(2-thiazolylazo)resorcinol

Petya Racheva, Nikolina Milcheva, Fatma Genç et al. · Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy · 2021 · 38 citations

Natural Sciences, Chemistry, Analytical Chemistry +6

An environmentally friendly cloud point extraction–spectrophotometric determination of trace vanadium using a novel reagent

Nikolina Milcheva, Fatma Genç, Petya Racheva et al. · Journal of Molecular Liquids · 2021 · 21 citations

Natural Sciences, Chemistry, Analytical Chemistry +9

Complex Formation in a Liquid-Liquid Extraction System Containing Cobalt(II), 4-(2-Pyridylazo)resorcinol, and Nitron

Petya Racheva, Kiril B. Gavazov, Vanya Lekova et al. · Journal of Materials · 2013 · 19 citations · Full text

Natural Sciences, Chemical Engineering, Chemistry +16

SPECTROPHOTOMETRIC DETERMINATION OF COBALT(II) IN A LIQUID-LIQUID EXTRACTION SYSTEM CONTAINING 4-(2-THIAZOLYLAZO) RESORCINOL AND 2,3,5-TRIPHENYL-2H-TETRAZOLIUM CHLORIDE

Vidka Divarova, Petya Racheva, Vanya Lekova et al. · 2013 · 13 citations

Natural Sciences, Biochemistry, Chemistry +14

Use of a Hydrophobic Azo Dye for the Centrifuge-Less Cloud Point Extraction–Spectrophotometric Determination of Cobalt

Kiril B. Gavazov, Petya Racheva, Nikolina Milcheva et al. · Molecules · 2022 · 13 citations · Full text

Natural Sciences, Chemistry, Analytical Chemistry +5