New magnetic nano-absorbent for the determination of n-octanol/water partition coefficients

Preparation of <i>N</i>-Succinyl-chitosan and Their Physical-Chemical Properties as a Novel Excipient

“…17) The aqueous phase (PBS): n-octanol ratio employed was kept the same (100) unless otherwise stated. Samples before and after partition were quantiˆed by using UV 9200 spectrophotometer ZRS-4 (Shimadzu, JAN).…”

Magnetic solids in analytical chemistry: A review

“…Gao et al reported the synthesis of porous silica-encapsulated magnetic nanoparticles as a nano-absorbent using a modified microemulsion technique. In this method, a magnetic iron oxide core is prepared and TEOS is added to form the porous silica overlayer through the hydrolysis/condensation of TEOS producing silica gel in ammonia solution [21].…”

Partition coefficient n-octanol/water of propranolol and atenolol at different temperatures: Experimental and theoretical studies

“…2 650 619 653 729 1-3 913 4181 846 6181 2-3 2479 2718 2479 800 Table 7 The binary interaction parameters for the {n-octanol (1) + atenolol (2) + water (3) P ow is actually the phase equilibrium constant for propranolol or atenolol partitioned in the n-octanol phase and the aqueous phase saturated with each other at some temperature. The logarithmic ratio, log P ow can be calculated by the following equation [17]:…”