Rapid radiochemical method for determination of actinides in emergency concrete and brick samples

Rapid determination of actinides and 90Sr in river water

“…Aqueous samples were placed into a DigiPREP vial and acidified to 3 M, suitable medium to fix of the elements on the resins, by adding 2.4 mL of concentrated HNO 3 . 3.75 g of aluminum nitrate (previously purified from traces of uranium by passing 500 mL of a 750 g L À1 solution through 3 mL of the DGA resin) was added to each sample [17]. In case of high environmental radioactive contamination, Al(NO 3 ) 3 could be used without previous purification, since a blank contamination would be negligible and subtracted without significant impact.…”

Rapid method to determine actinides and 89/90Sr in limestone and marble samples

“…Cool with ice to room temp. (U) Add 5mL 3.2 M (NH 4 ) 2 Cerium fluoride microprecipitation was used to prepare the purified actinide samples for alpha spectrometry counting. After adding 50 lg Ce, 0.5 mL 30 wt% H 2 O 2 and 1 mL 28 M HF to the Pu eluent solution and waiting 15 min, the solution was filtered using a 25 mm polypropylene filter (0.1 lm pore size disposable Resolve TM filter funnel).…”

“…TRU ? DGA Resin may also be used [2]. Rapid flow rates achieved using vacuum box technology, and stacked resin cartridges with highly selective extraction chromatographic resins significantly reduce separation times and waste volumes.…”

“…This includes recently published methods for soil, concrete and brick, and asphalt. [1][2][3] Limestone is sedimentary rock containing calcite and aragonite, which are different forms of calcium carbonate. Most limestone also contains skeletal fragments of marine organisms such as coral and mollusks.…”

A new method for separating first row transition metals and actinides from synthetic melt glass

“…In addition to the first row transition elements, the separation of other elements found in the melt glass debris are also of interest, such as Group 1 and 2 elements and the actinides. [8][9][10][11]. Therefore, this separation of urban melt glass, which consists of both cement and glass, with the intent to separate some of the first row transition metals using DGA resin, is unique.…”