The determination of 129I in milk and vegetation using neutron activation analysis

Determination of 129I in seawater and some environmental materials by neutron activation analysis

“…Alkaline ashing followed by extraction or ion-exchange separation of iodine has also been reported for the preseparation of iodine from vegetation samples. 36,37 It is easy to operate and can avoid the above problems. Thus, in this work, alkaline ashing or alkaline fusion followed by leaching with hot water and extraction with CCl 4 was used for decomposition of the sample and separation of iodine from grass, seaweed and a small amount of soil (less than 5 g).…”

Determination of iodine and molybdenum in milk by quadrupole ICP-MS

“…Whilst 127 I is the only stable isotope, the most hazardous iodine species are the radioactive isotopes such as 129 I and 131 I which may enter the food chain via the air-grass-cow-milk pathway as a result of aerial emissions from nuclear reprocessing plants [7]. The long-lived radionuclide 129 I is monitored by regular measurement of 129 I content of liquid milk from cows in the potentiallyaffected areas [8,9], typically by radiometric analysis after appropriate separation techniques [10].…”

The effect of chemical speciation on the impact of129I discharges to atmosphere from BNFL Sellafield, Cumbria

“…Analytical values presented here were determined primarily using radiochemical neutron activation analysis (RNAA), largely developed by Parry et al [6]. Iodine is wet extracted from the sample (using 2M K.OH) and sorbed onto an anion exchange resin (Bio-Rad AG1-X8), which is then dried and irradiated for 7 hours using a thermal neutron flux of 1x10 2 n cm* 2 s" 1 .…”