Diffusion of cesium ions labeled with 134Cs in agar gel containing alkali metal chlorides: Obstruction effect and activation energy

Diffusion of Fe3+ Ions in Agar Gel Medium Containing Zinc Sulfate: Obstruction effect and Activation Energy

“…An examination of Table 2 reveals a consistent trend: as the concentration of the electrolyte the concept of competitive hydration between ions and agar macromolecules within a given system, and it aligns with findings from our previous reports (references 9,10,12 .…”

Tracer Diffusion of Cr3+ Ions in Agar Gel Media Containing Transition-Metal Sulfates

“…E-mail: nsraj@chem.unipune.ernet.in. in NiSO 4 : 10 10 · D Cr 3+ ) 5.941 -19.177√C (2) in CuSO 4 : 10 10 · D Cr 3+ ) 5.941 -19.246√C (3) in ZnSO 4 : 10 10 · D Cr 3+ ) 5.941 -19.317√C (4) in CoSO 4 : 10 10 · D Cr 3+ ) 5.941 -19.083√C (5) in MnSO 4 : 10 10 · D Cr 3+ ) 5.941 -19.215√C (6) Similarly, the extended limiting law expressions for D Cr 3+ at 25°C take the following forms:…”

“…The diffusion was allowed to proceed for 24 h, after which the diffusion column was assayed by measuring the activity of 51 Cr at 320 keV using a NaI (Tl) detector coupled with a single channel analyzer. The diffusion coefficients were then calculated from plots of log(activity) versus (distance) 2 , and the values presented are averages of four independent measurements with a precision of ( 0.5 %.…”

“…Tracer diffusion of Cr 3+ ions in different supporting electrolytes, namely, MnSO 4 , CuSO 4 , CoSO 4 , NiSO 4 , and ZnSO 4 , was studied over the electrolyte concentration range (5·10 −7 to 10 −2 ) M in 2.5 % agar gel at 25 °C. The diffusion coefficients were determined using labeled 51 Cr ions and the zone diffusion technique, , the details of which are discussed in earlier papers. , 51 Cr ( t 1/2 = 24.7 days) was obtained from BARC (Mumbai, India). The diffusion was allowed to proceed for 24 h, after which the diffusion column was assayed by measuring the activity of 51 Cr at 320 keV using a NaI (Tl) detector coupled with a single channel analyzer.…”

“…Tracer diffusion of various uni- [1][2][3] and bivalent [4][5][6] ions in different supporting electrolytes under different experimental conditions has been reported by this laboratory. In our previous paper, we reported a study of the activation energy and obstruction effect for tracer diffusion of Cr 3+ ions in agar gel media containing different electrolytes.…”