title: Acoustical behavior of some amino acids in aqueous disodium citrate solutions over temperature range (298.15-313.15) K.
abstract: Sound velocity, U, and density, ρ of some amino acids viz. glycine, methionine, phenylalanine and tryptophan were determined in 0.1, 0.2 and 0.3 mol kg⁻¹ aqueous disodium citrate solutions as a function of concentration at 298-313.15K using DSA 5000M. The experimental data were further used to compute various acoustical parameters such as adiabatic compressibility, β, apparent molar compressibility, ∅(k), partial molar compressibility, ∅(0)k, transfer adiabatic compressibility, Φ(0)(ktr), constant, Sk, and the hydration number, nH. The transfer adiabatic compressibility shows the supremacy of hydrophilic-ionic interactions under hydrophobic-ionic interactions. The above-mentioned parameters are relevant for the efficiency of mediation in pharmacology and can be interpreted in terms of structure-making or structure-breaking ability of these amino acids in the solution.
authors.affiliation: Department of Chemistry, Government College University, Faisalabad, Pakistan.
authors.forename: Muhammad Asghar
authors.initials: MA
authors.lastname: Jamal
authors.affiliation: Department of Chemistry, Government College University, Faisalabad, Pakistan.
authors.forename: Muhammad Kaleem
authors.initials: MK
authors.lastname: Khosa
authors.affiliation: Department of Chemistry, Government College University, Faisalabad, Pakistan.
authors.forename: Majid
authors.initials: M
authors.lastname: Muneer
authors.affiliation: Department of Applied Chemistry, Government College University, Faisalabad, Pakistan.
authors.forename: Fazalur
authors.initials: F
authors.lastname: Rehman
authors.affiliation: Department of Applied Chemistry, Government College University, Faisalabad, Pakistan.
authors.forename: Muhammad Jawad
authors.initials: MJ
authors.lastname: Saif
authors.affiliation: Department of Chemistry, University of Agriculture, Faisalabad, Pakistan.
authors.forename: Haq Nawaz
authors.initials: HN
authors.lastname: Bhatti
authors.affiliation: Department of Chemistry, Government College University, Faisalabad, Pakistan.
authors.forename: Sadaf
authors.initials: S
authors.lastname: Naz
authors.affiliation: Department of Chemistry, Government College University, Faisalabad, Pakistan.
authors.forename: Jaweria
authors.initials: J
authors.lastname: Javed
mesh_terms: D000596:Amino Acids / Q000737:chemistry*; D012996:Solutions; D013696:Temperature; D013816:Thermodynamics
chemical_list: D000596:Amino Acids; D012996:Solutions