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AmericanNuclearSociety InternationalTopicalConference BOOK of ABSTRACTS MARC XI Eleventh International Conference on Methods and Applications of Radioanalytical Chemistry April -13, 2018 Draft version: February 17, 2018 www.marcconference.org MARCXIFinalBookofAbstracts MARCXIFinalBookofAbstracts The organizers of the Eleventh International Conference on Methods and Applications of Radioanalytical Chemistry (MARC XI) conference are pleased to providethefollowingsummaryofabstractsforreferencebyattendeesoftheMARC XI conference These materials are a supplement to the actual Program, which providescompletedetailsoftheconferenceandsequenceofpresentations However, itwillnotincludeacopyofalltheabstracts,asitwouldbeaverylargepublication MARCXIisexpectedtobeoneofthelargestMARCconferencewithover450abstracts submitted The following300+ pagesprovidethe abstracts submitted forpresentationat the MARC XI conference as of February 5, 2018 The list will only be provided electronicallyandonlyasmallnumberofhardcopyabstractsummarybookswillbe available for reference at theconferenceatthedesk Individualcopieswillnotbe provided If you have any questions, please contact the program chair, Sam Glover (sam.glover@uc.edu) Please visit the MARC website for additional details at www.marcconference.org MARCXIFinalBookofAbstracts Log 103 DR ROLF ZEISLER: A CAREER REFLECTED IN 30 YEARS OF MARC Heller-Zeisler, S.F., National Institute of Standards and Technology (retired) Drawing from the work authored and co-authored by Dr Rolf Zeisler throughout the progression of the MARC conferences, this presentation highlights a few of his many career achievements Spanning his extensive history with the conferences, the presentation touches on some of his notable research areas, including low-level trace element determinations, elemental speciation, radiochemical determinations, and the use of state-of-the-art instrumentation to push the boundaries of activation analysis Never satisfied with existing limitations, he constantly pushed to improve the accuracy in analytical determinations of trace elements To so, he solicited a diverse group of collaborators possessing a wide range of analytical expertise This approach reflected his drive to identify the particular analytical technique or set of techniques appropriate to achieve the desired goals of lowering detection limits and/or improve accuracy for the samples being investigated In the use of instrumental methods, this has ranged from employing instrumental neutron activation analysis (INAA) using Compton Suppression and investigations on the accuracy of high count rate gamma spectrometry In prompt gamma activation analysis (PGAA), he continually pushed to use coincidence and anti-coincidence techniques, starting with measurements in pulsed cold neutron beams, and moved to time-resolved gamma-ray spectrometry In addition to pushing boundaries on the instrumental side, he also remained a steadfast supporter of radiochemical techniques where appropriate, to achieve more precise results and lower detection limits This has been both in combination with INAA, as in the case of the human liver sample analyses, but has also included more directed measurements by radiochemical separations, e.g for Si and for Al, V, and Ni in reference materials and challenging biological matrices His work has also included the development and characterization of new reference materials Some of this work is highlighted here, including his work on the air particulate matter on filters, which led to Standard Reference Material (SRM) Air Particulate on Filter Media, SRM Fine Air Particulate Matter, and RM Air Particulate Matter on Filter Media These are the first RMs of this kind worldwide His continued interest in trace element speciation supported his involvement in the collaboration to develop the hair intercomparison materials for mercury speciation In addition to these, he strove to achieve the most accurate and precise measurements for existing reference materials To evaluate long-term stability, he initiated oxygen measurements in a coal SRM via 14 MeV NAA in order to determine any chemical change through oxidation over time He also collaborated with his NIST colleagues toward the demonstration of viability of INAA in chemical metrology, surveying the uncertainty components that affect the INAA measurement process The process was tested with the INAA determination of Cr in SRM 1152A stainless steel Throughout his career, he served as a mentor to young scientists worldwide Following this interest, in addition to his research presentations at the MARC meetings, he worked on the continuing discussions on how to further radiochemical education in the U.S and abroad He was co-organizer on three successive sessions on Nuclear Science Manpower and Education panels (MARC-VI, VII, and VIII) The first session resulted in a resolution on Manpower Requirements and Education in Nuclear Science, signed by attendees at the meeting The follow-up sessions described the progress and specific examples of programs, as well as continuing needs Dr Zeisler made an indelible mark in furthering excellence in the field of analytical science and in the lives of those individuals who knew him Log 105 ENVIRONMENTAL BEHAVIOR OF PLUTONIUM: SCIENTIFIC CHALLENGES FOR CLEAN-UP AND SAFE LONG-TERM STORAGE Kersting, A.B Today the global inventory of plutonium (Pu) is approximately 2,500 t resulting from both weapons related activities and the nuclear fuel industry, with yearly increases estimated between 70-90 t Due to its long halflife (239Pu 2.41 x 104 years) and high toxicity, safely isolating and storing this plutonium as well as the rest of our high-level nuclear waste remains a pressing scientific challenge Although we have made significant progress on better understanding the mechanistic behavior of Pu, knowledge gaps still remain, hampering our ability to model its transport behavior and achieve confidence in predicting its long-term behavior These gaps hamper progress on convincing a skeptical public that we can clean up and safely isolate this waste for the thousands of years necessary to protect the biosphere In this presentation, I will give an overview of our current state of knowledge on the environmental behavior of Pu, discuss the significant progress we have made, and highlight some of the most pressing knowledge gaps that still need addressing MARCXIFinalBookofAbstracts Log 106 NUCLEAR EMERGENCIES: A CHALLENGE FOR SCIENCE AND SOCIETY Steinhauser, G.(1) (1) Leibniz University Hannover Nuclear emergencies include nuclear accidents as well as nuclear terrorism, the use of nuclear or radiological weapons, illicit trafficking of nuclear materials, etc Such emergencies pose an imminent threat to the fabric of society They may be relevant by direct, indirect, and perceived harm to human health and the environment The nuclear community has established profound knowledge and strategies to help prevent nuclear emergencies and to mitigate their effects However, while focusing on becquerels, sieverts and grays, the community quite often tends to forget the social aspects of a nuclear emergency Some initiatives have been launched recently to close this gap for a good reason: the nuclear community may effectively benefit from a more holistic view on the subject Log 107 PRODUCTION AND APPLICATIONS OF STABLE AND RADIOISOTOPES: A GLOBAL PERSPECTIVE OF SUPPLY AND DEMAND Runde, W.H Los Alamos National Laboratory Stable and radioisopes are vital to the research and applications in a number of disciplines such as (bio, geo)chemistry, medicine, agriculture, energy or national defense They can occur naturally or can be produced artificially in highly specialized facilities using separators, accelerators or nuclear reactors This presentation provides an overview of main production technologies and examines the current and future supply situation for the most commonly used radioisotopes for various applications Log 108 CHARACTERIZATION OF SEIZED NUCLEAR MATERIALS BY A LABORATORY SPECIALIZED IN TRACE ANALYSES OF RADIONUCLIDES FOR SAFEGUARDS AND ENVIRONMENTAL MONITORING: EXPERIENCE AND PERSPECTIVES Pointurier, F.; Fauré, A.L.; Hubert, A.; Humbert, A.C.; Hubert, A.; Haedrich, H.; Marie, O.; Rivière, G.; Roche, E.; Greiner, V.; Douysset, G.; Bernard-Michel, B Analytical expertise unit of the French Atomic Energy Agency (CEA) in Arpajon is mainly involved in analysis of environmental samples for safeguards and environmental monitoring of some French nuclear sites In this respects, the unit is since 2001 a member of the IAEA’s Network of Analytical Laboratories for nuclear safeguards, both for bulk and particle analysis of environmental samples So the unit has strong experience in radiochemical purifications of minute amounts of uranium and plutonium, and precise measurement of U and Pu isotopic compositions at trace level by mass spectrometry (ICPMS, SIMS or TIMS) These isotopic capabilities are completed by implementation of scanning electron microscopy, micro-Raman spectrometry, low-level gamma spectrometry, detection of specific elemental impurities and uranium age determination Moreover, since a few years, the unit is also regularly involved in the characterization of nuclear material samples, mainly in the framework of international exercises Therefore, developments of analytical methods for safeguards are conducted with a view to be applicable both to the low amounts of nuclear materials encountered in typical environmental samples and to macroscopic nuclear materials The goals of this presentation are to show how a laboratory mainly specialized in the analysis of radionuclides (mainly uranium and plutonium) at trace level can efficiently contribute to the full characterization of macroscopic nuclear materials, to present capabilities, results and experience acquired through CMX exercises, and also to discuss how these capabilities can be improved, both regarding timelines and diversity of the provided information Log 110 ROLF ZEISLER AND OPPORTUNITIES IN NUCLEAR METHODS Lindstrom, R M National Institute of Standards and Technology In 1986, Rolf Zeisler seized an opportunity at the newly opened cold-neutron guide hall at KFA Jülich, and arranged for NIST to gain the experience to design our own system With Matthias Rossbach, we made 90 hours of measurements in three intense weeks, and then two weeks later presented our work at MTAA-7 The title was Rolf’s: “Activation Analysis Opportunities Using Cold Neutron Beams” This paper laid out all the issues to be developed in the next decades of progress in PGAA Rolf continued to be innovative in applying nuclear methods to improve elemental analysis His leadership in environmental specimen banking and air MARCXIFinalBookofAbstracts particulate collection and analysis has led to numerous Standard Reference Materials, and his enthusiasm for improved instrumentation has substantially improved the accuracy and applicability of nuclear analytical methods at NIST and elsewhere Rolf’s activities in the analytical community were extensive, being deeply involved in the organization of MARC, MTAA, NAMLS, ANS, and other series of meetings to bring his expertise and passion to us all Log 111 THE USE OF CROSS-LINKED ANTIMICROBIAL NANOCOMPOSITE FILMS AND GAMMA IRRADIATION TO ASSURE THE SAFETY OF FRESH MEATS Monique Lacroix (1), Avik Khan (1), Hejer Gallah (1), Bernard Riedl (2), Jean Bouchard (3), Agnes Safrany (4) (1) INRS-Institut Armand-Frappier/Canadian Irradiation Centre (2) Département des sciences du bois et de la forêt, Université Laval (3) FP Innovation (4) International Atomic Energy Agency, Vienna International Centre A 125 g/mL of nisin and 30 mM of disodium ethylenediaminetetraacetate (EDTA) were immobilized on the surface of the nanocrystal (CNC)/chitosan nanocomposite films by using genipin as a cross-linking agent The effect of low-dose gamma irradiation on the antimicrobial activity of the films was tested in vitro against Escherichia coli and Listeria monocytogenes The genipin cross-linked films prepared by irradiating at 1.5 kGy demonstrated the highest antimicrobial activity against both the bacteria at the end of 35 days of storage at 37 °C showing an inhibition zone of 27.1 mm for E coli and 27.7 mm for L monocytogenes as compared to 23.4 mm and 23.8 mm for the same respective bacteria at day The films restricted the growth of psychrotrophs, mesophiles, and Lactobacillus spp (LAB) in fresh pork loin meats and increased the microbiological shelf-life of meat sample by more than weeks The films also reduced the count of E coli and L monocytogenes in meat samples by 4.4 and 5.7 log CFU/g, respectively, after 35 days of storage Log 112 EFFECT OF GAMMA-IRRADIATION IN COMBINATION WITH MARINATING TO ENSURE THE SAFETY AND TO PROTECT THE NUTRITIONAL VALUE OF READY-TO-COOK MEAT FOR IMMUNOCOMPROMISED PATIENTS Monique Lacroix (1) Yosra Ben Fadhel (1), Valentin Leroy (1,2), Dominic Dussault (3), France St-Yves (4), Martine Lauzon (4), Stéphane Salmieri (1), Majid Jamshidian (1), Dang Khanh Vu (1), Sélim Kermasha (5) (1) INRS-Institut Armand-Frappier (2) University of Tours, 60 rue du Plat D'Etain 37020 Tours cedex, France (3) BSA Food Ingredients Inc., 6005, boul Couture, St-Leonard, Qc, H1P 3E1, Canada (4) Montmorency College, 475 boulevard de l’Avenir, Laval, Qc, H7N 5H9, Canada (5) Mc Gill University, 21, 111 Lakeshore, Ste-Anne de Bellevue, Quebec, Canada H9X 3V9 The aim of this study was to evaluate the effect of combining marinating and -irradiation at doses of 1, 1.5, and kGy on Escherichia coli O157:H7, Salmonella Typhimurium, and Clostridium sporogenes in raw meat packed under vacuum and stored at °C and to estimate its safety and shelf-life Further, the effect of combined treatments on sensorial, nutritional values (lipid oxidation, concentration of thiamin and riboflavin), and color were evaluated The study demonstrated that the use of marinade in combination with a low dose of -irradiation (1.5 kGy) could act in synergy to reduce to undetectable levels of pathogenic bacteria and increase the shelf-life of ready-to-cook meat loin without affecting its sensorial and nutritional quality MARCXIFinalBookofAbstracts Log 113 RADON IN DRINKING WATER IN MEXICO CITY Espinosa, G (1); Golzarri, J l (1) Physics Instituto, Universidad Nacional Autónoma de México (UNAM) Exposure to radon occurs when people drink water or breathe gas radon emitted from drinking water containing radon International Epidemiological authorities recognized that exposure to radon from drinking water is a potential health hazard, as has been considered worldwide In Mexico City, with more than 20 million inhabitants, the population is exposed to the emanation of radon of the drinking water from the federal water supply system Presented in this paper are the results of the radon concentration measurements in drinking water, from 45 wells of the federal water supply system, that represents the 33% of the drinking water consumed by the Mexico City population The United States Environmental Protection Agency (USEPA) has proposed a limit of 11.1 Bq/1 for the radon concentration level in drinking water in order to minimize the radiological risk to the population In this work, the measurements of radon (222Rn) concentration in drinking water in Mexico City revealed concentration ranging from the lower limit of the instrumentation, 0.11 Bq/l, up to 2.4 Bq/l The radon concentration measurements were made using an AlphaGUARD radon measurement system together with an AquaKIT portable degassing system, the latter with an air flow of 0.3 l/min, using Genitron Instruments Data EXPERT software, following a very well established protocol These radon concentration levels are very important from the public health point of view, and it will be recommendable to measure the radon concentration in drinking water periodically in order to prevent the occurrence of epidemiological problems in the population Log 114 LONG-LIVED CONTAMINANTS IN CYCLOTRON-PRODUCED RADIOPHARMACEUTICALS - MEASUREMENT AND DOSIMETRY Metzger, R.L.(1); Lasche, G.P.(2); Eckerman, K.F.(3); Leggett, R.E.(4) (1) RSE, Inc.; (2) Snakedance Scientific.; (3) Easterly Scientific; (4) ORNL Oxygenated target waters of cyclotron targets contain long-lived contaminants due to (p,n) reactions in the HAVAR target window that are spalled into the target water These contaminants are largely removed during the synthesis of the final imaging agent Currently, the USP requires that the final drug product be 99.5% pure, so the total activity of the long-lived contaminants can be no more than 0.5% of the final radiopharmaceutical product A method has been developed to identify and quantify the primary contaminants using high resolution gamma spectroscopy and VRF, a new spectrum analysis tool Uptake, retention, and excretion functions for each of the contaminating isotopes in a soluble, injected chemical form have also been calculated using International Commission on Radiological Protection (ICRP) Publication 123 models and are presented in the Appendix In addition, specific organ and effective dose coefficients were also calculated using ICRP Publication 103 tissue weighting factors and are also presented in the Appendix Typical imaging agents have contaminant loads far below the USP limit and contribute negligible doses to the patients receiving the drugs Log 115 LONG-LIVED CONTAMINANTS IN CYCLOTRON-PRODUCED RADIOPHARMACEUTICALS - HOMELAND SECURITY DETECTORS Metzger, R.L.(1); Van Riper, K A.(2); Eckerman, K.F.(3); Leggett, R.E.(4) (1) RSE, Inc.; (2) White Rock Science; (3) ORNL; (4) ORNL In the USA during 2015 over 1,718,500 clinical PET scans were performed in 2,380 centers Patients undergoing these studies will alarm homeland security monitors at borders, ports, and some airports for up to two days due to the positron-annihilation photons (0.511 MeV) from the imaging isotope F-18 (110 halflife) In some radiopharmaceuticals, long-lived contaminants generated from the activation and spallation of elements in the HAVAR window of the cyclotron target may also be present in the patient dose In this work, we have modeled a typical homeland security portal monitor in MCNP, and determined its sensitivity to each of the possible contaminating isotopes found in PET radiopharmaceuticals when distributed in patient phantoms These data were combined with the time-dependent uptake/retention functions for the contaminating isotopes, developed in other work, to identify the isotopes that can cause alarms for substantial periods of time after the short-lived imaging agent has decayed away Results indicate that Cr-51, Mn-54, Co56, and Co-58 are avidly retained in the body, have relatively long biological half-times, and have energetic photon emissions that couple well with the large area scintillators commonly found in Homeland Security detectors Cyclotron-produced radiopharmaceuticals that contain any of these isotopes as contaminants can MARCXIFinalBookofAbstracts cause patients to alarm Homeland Security detectors for several months after the F-18 has decayed away, even with contaminant loads that are 10000 RP) allows for the avoidance and removal of interferences, e.g., the removal of Cu and Zn argides from Rh, Pd and Ag isotopic signals, with enhanced sensitivity and fast mass scanning capabilities Methods for the correction of oxide interferences are also being evaluated by coupling a desolvating nebulizer to the HR-ICP-MS Methods developed using the HR-ICP-MS have the potential to increase the accuracy of the results on the determination of several isotopes in post-irradiated nuclear fuels Log593 OXYGENISOTOPEANALYSISOFURANIUMOXIDESUSINGNF3FLUORINATION Klosterman,M.R.;McDonald,L.W UniversityofUtah Oxygen isotope ratios of uranium oxides are known to correlate with those of the fluids from which they pr ecipitated The variety of processing routes utilized in the nuclear fuel cycle, from ore concentration throug h enrichment, will therefore contribute to a wide variation in δ18O values encountered among uranium oxid es Application of this information for nuclear forensics purposes requires an understanding of the oxygen i sotopic fractionation induced through certain processing conditions In this study, UO2 samples were synth esized using waters enriched in 18O from both a traditional route precipitation as UO4, followed by calcination and hydrogen reduction— and through direct photochemical reduction To analyze changes in the 18O/16O ratios of these samples, a 164 MARCXIFinalBookofAbstracts thermal fluorination technique was employed using NF3 as a fluorinating agent Results of oxygen isotope fractionation arising from variation in synthetic methods will be discussed, along with their implications for future radioanalytical and nuclear forensic investigations Log594 ONNUCLIDESMININGFROMUSEDNUCLEARFUEL Kajan,I.(1,);Schumann,D.(1) (1) PaulScherrerInstitute,Switzerland Apart from the energy production, used nuclear fuel can be a source of radionuclides for further scientific purposes A pilot system for such an isotope mining from high level active waste is currently under development at PSI in order to extract minor actinides (244Cm, 245Cm,246Cm) as well as some isotopes from the lanthanides series The system consists of several extraction chromatographic columns where extractions and consequent separations will be performed In order to selectively remove cesium from the high level active waste as the main dose rate emitter a column with ammonium molybdophosphate impregnated silica gel will be utilized Major actinides (U+Pu) will be extracted by TBP impregnated resin and consequently eluted Extraction and separation of lanthanides and minor actinides from the nitric acid matrix will be performed on TODGA resin with utilizing hydrophilic SO3Phen-BTP as a selective complexing agent for the elution step Collected fraction with minor actinides will undergo further separation in order to obtain pure fractions of Curium and Americium Separations of lanthanides from each other will be performed with utilization of TODGA resin column and diethylenetriaminepentaacetic acid as an elution agent The system was already tested in batch experiments and consequently distribution constants for chosen isotopes were obtained on TBP and TODGA resin materials from nitric acid matrixes As a next step tests will be carried out with diluted sample of high-level active waste solutions in order to test system performance Log595 NATIONALTECHNICALNUCLEARFORESNICS:U.S APPROACHTOCAPABILITY SUSTAINMENT AmalieZeitoun USDepartmentofHomelandSecurity–CounteringWeaponsof MassDestructionOffice,WashingtonD.C USA In the event of a nuclear detonation in the United States (U.S.), the interdiction of a nuclear device, or the seizure of nuclear or other radiological materials, there will be tremendous pressure to attribute the source of the material, establish responsibility, and ensure the prevention of another incident Along with intelligence and law enforcement investigations, nuclear forensics is one of the three pillars supporting attribution The field of nuclear forensics includes the collection, analysis, and evaluation of radiological or nuclear materials, devices, and debris after an event or interdiction The nuclear forensics scientific workforce is situated primarily in national and defense laboratories, but in recent decades has experienced a decline in numbers The Countering Weapons of Mass Destruction Office (CWMD) has implemented an expertise development program in order to off-set these declines and sustain a workforce of educated and trained scientists skilled in areas needed for nuclear forensics Since its inception in 2008, the National Nuclear Forensics Expertise Development Program (NNFEDP) has placed 56 Ph.D.’s directly into national laboratories and U.S federal agencies, maintaining the technical expertise required to execute the Nation’s nuclear forensics mission.As the NTNF mission steward, CWMD is focused on assuring an enduring nuclear forensics workforce required to execute the Nation’s nuclear forensics mission CWMD works in close collaboration with the Departments of Defense, Energy, and Justice in administrating the NNFEDP which works to build a nuclear forensics workforce of recognized technical experts through research collaboration between and among academia, the national and defense laboratories, and the NTNF federal community 165 ... the determination of 24 1-Pu /24 1-Am, 24 0-Pu /23 6-U, 23 9-Pu /23 5-U, 23 8-Pu /23 4-U atom ratios for 13 MARC XI Final Book of Abstracts bulk plutonium materials and allows comparison of chronometers in.. .MARC XI Final Book of Abstracts MARC XI Final Book of Abstracts The organizers of the Eleventh International Conference on Methods and Applications of Radioanalytical Chemistry (MARC XI) ... range from 3. 42% to 12. 28%, below accepted relative bias of 25 % and passed the criteria which could confirm our analytical performance of low level Sr-90 10 MARC XI Final Book of Abstracts determination
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