All ultra-pure water (18.2 MΩ cm−1) used was provided by a Sartorius™ Arium pro UF Ultrapure Water System. High purity liquid elemental standards and ultrapure nitric and hydrochloric acids (Seastar Baseline; 67–70% HNO3, 30–35% HCl) were all provided by Choice Analytical, Thornleigh, NSW, Australia. Selleys Araldite Ultra Clear Epoxy was used for mounting samples. 0.2-μm Captiva polyethersulfane syringe filters used were provided by Agilent Technologies, Mulgrave, Victoria, Australia. Plastic tubes used throughout experiments were made of polypropylene, with all pipette tips used being metal free (Gilson, WI, USA).
Arium pro uf ultrapure water system
Manufactured by Sartorius
The Arium pro UF Ultrapure Water System is a water purification system designed to produce ultrapure water. It utilizes a combination of filtration and deionization technologies to remove impurities from the input water, resulting in high-purity water suitable for various laboratory applications.
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2 protocols using arium pro uf ultrapure water system
1
Ultrapure Water Sample Preparation
2
Uranium, Thorium, and Plutonium Analysis
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All reagents were of analytical grade. Deionized water from an arium ® pro UF Ultrapure Water system (Sartorius), 65% nitric acid p.a. (prepared on a quartz sub-boiling apparatus), 40% hydrofluoric acid suprapur, 37% hydrochloric acid suprapur and ammonium iron (ii) sulphate hexahydrate pro analysis (all from Merck) were used for the analyses. Uranium isotope standard IRMM-187 and IRMM-184 (all from Joint Research Centre, Belgium) were used for isotope ratio calibration and validation. A standard solution of 242 Pu (Joint Research Centre, Belgium) was used as radiochemical yield tracer. Standard solutions of uranium, thorium (Th) and indium (In) were purchased from Alfa Aesar (Germany). The extraction chromatography resins TEVA and UTEVA were purchased from Triskem International (Bruz, France). The certified reference material IAEA-381 (Irish Sea Water) was obtained from the International Atomic Energy Agency (Vienna, Austria). All U and Pu radionuclide measurements were performed on a MC-ICP-MS Neptune (Thermo-Fisher). The U content in the melted ice samples was analyzed in a sector field sf-ICP-MS Element 2 (Finnigan MAT, Germany). The 3 H measurements were performed in an ultra-low level liquid scintillation counter (LSC) Quantulus 1220 (PerkinElmer).
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