The influence of substrate charge and molecular structure on interphase transfer in cloud point extraction systems

Cloud point extraction and graphite furnace atomic absorption spectrometry determination of manganese(II) and iron(III) in water samples

“…There are some publications on cloud point extraction of Mn(II) and Fe(III) [29][30][31][32][33][34]. The enrichment factor of our method is similar to that reported in Ref.…”

“…CPE as a preconcentration step in conjunction with spectrophotometry, FIA-spectrofluorimetry, FAAS, ETAAS, ICP-AES, and HPLC for the determination of various metal ions has been widely studied [21][22][23][24][25][26][27][28]. CPE combination with FAAS for determination of manganese and iron has also been reported [29][30][31][32][33][34].…”

Lyophilic properties of surfactant-rich phases of polyethoxylated alkylphenols formed at cloud point temperature

“…Recent publications indicate that the cloud point extraction is an effective procedure for preconcentrating and separating of metal ions, organic pollutants and biologically active compounds [6][7][8][9][10]. The effectiveness of the cloud point extraction is due to its high selectivity and the possibility of obtaining high coefficients of absolute preconcentrating while analyzing small sample volumes.…”

An Eco-Friendly and Sustainable Process for Enzymatic Hydrolysis of Penicillin G in Cloud Point System

“…As the PAA dissociation constant (pK) is about 4.3 and the aqueous-organic solvent extraction only works for a non-charged organic substance, the extractive enzymatic hydrolysis in an aqueous-organic solvent biphasic system restricts its effectiveness to a relatively low pH range [5]. Different from the aqueousorganic solvent biphasic system, the extraction of organic substance with charged ions in cloud point system has been reported [15]. A relatively high equilibrium pH of enzymatic hydrolysis in a cloud point system can be easily maintained as shown in Fig.…”

“…Different from aqueous-organic solvent biphasic system, cloud point system has an ability to extract of organic substances with charged ions. The structure and hydrophobicity of the organic substances have cooperative influence on its distribution behavior between those two phases [15]. This peculiar character may be useful for extractive enzymatic hydrolysis of penicillin G at a relatively high pH.…”