Table 3 Concentration effect on ion-isotopic exchange reactions
Concentration of ionic solution (mol/L) | Amount of ions in 250 mL solution (mmol) | Reaction (1) | Reaction (2) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Duolite ARA-9366B | Purolite NRW-5010 | Duolite ARA-9366B | Purolite NRW-5010 | ||||||||||
Specific reaction rate of rapid process (min−1) | Amount of iodide ion exchanged (mmol) | Initial rate of iodide ion exchange (mmol/min) | Specific reaction rate of rapid process (min−1) | Amount of iodide ion exchanged (mmol) | Initial rate of iodide ion exchanged (mmol/min) | Specific reaction rate of rapid process (min−1) | Amount of bromide ion exchanged (mmol) | Initial rate of bromide ion exchange (mmol/min) | Specific reaction rate of rapid process (min−1) | Amount of bromide ion exchanged (mmol) | Initial rate of bromide ion exchange (mmol/min) | ||
0.001 | 0.250 | 0.201 | 0.139 | 0.028 | 0.246 | 0.155 | 0.038 | 0.165 | 0.121 | 0.020 | 0.203 | 0.131 | 0.026 |
A i = 15,560 cpm | A i = 16,010 cpm | A i =16,532 cpm | A i =16,229 cpm | ||||||||||
A f = 6,909 cpm | A f = 8,531 cpm | A f =7,725 cpm | |||||||||||
A f = 6,084 cpm | |||||||||||||
0.002 | 0.500 | 0.218 | 0.293 | 0.064 | 0.253 | 0.322 | 0.081 | 0.173 | 0.253 | 0.044 | 0.215 | 0.269 | 0.058 |
A i = 16,009 cpm | A i = 16,564 cpm | A i = 16,176 cpm | A i = 15,632 cpm | ||||||||||
A f = 6,628 cpm | A f = 7,991 cpm | ||||||||||||
A f = 7,222 cpm | |||||||||||||
A f = 5,897 cpm | |||||||||||||
0.003 | 0.750 | 0.227 | 0.451 | 0.102 | 0.274 | 0.499 | 0.137 | 0.180 | 0.388 | 0.070 | 0.228 | 0.409 | 0.093 |
A i = 15,543 cpm | A i = 15,889 cpm | A i = 15,579 cpm | A i = 15,999 cpm | ||||||||||
A f = 6,196 cpm | A f = 7,519 cpm | ||||||||||||
A f = 5,318 cpm | |||||||||||||
A f = 7,274 cpm | |||||||||||||
0.004 | 1.000 | 0.235 | 0.629 | 0.148 | 0.290 | 0.689 | 0.200 | 0.186 | 0.528 | 0.098 | 0.245 | 0.557 | 0.136 |
A i = 15,877 cpm | A i = 15,895 cpm | A i = 15,953 cpm | A i = 16,005 cpm | ||||||||||
A f = 5,890 cpm | A f = 7,530 cpm | ||||||||||||
A f = 4,943 cpm | A f = 7,090 cpm | ||||||||||||