Rhenium-186 [t½ = 3.7 d, 1.07 MeV β−-particles, 137 keV γ-ray] is an emerging radioisotope which holds tremendous potential in preparation of theranostic radiopharmaceuticals. This radioisotope was produced in a no-carrier-added form by irradiation of enriched 186W target via 186W(p, n) 186Re reaction in a pelletron. A facile radiochemical separation procedure based on selective solvent extraction

The organic phase containing tetra(2-ethylhexy)diglycolamide (TEHDGA) and n-dodecane (n-DD) was irradiated to various absorbed dose levels in a 60Co gamma irradiation chamber. The organic phase subjected to irradiation was classified in to four different categories. The extraction behavior of Nd(III) from nitric acid was studied in the degraded solution of 0.2 M TEHDGA/n-DD and the reverse micellar

Naturally occurring radiation is present all around us. This study aims to predict the indoor gamma dose rate for areas of Kabirdham district using a statistical analysis model because there is no systematic modelling available for the study region. This study includes the statistical impact of geology on the indoor gamma dose rate. Statistical tests have been carried out for estimation of the indoor

Solvent extraction process is applied for the extraction of actinides/lanthanides from waste water produced in nuclear industry. Various extractants have been developed for this purpose. More recently separation scientists have shown extensive interest toward ionic liquids (ILs) due to their unique properties. ILs have extensively been used as extraction medium for the recovery of rare earths and actinides

Vertical profiles of radiocesium (134Cs and 137Cs) were measured in the western subarctic area of the North Pacific in 2017. The highest concentration of 134Cs, which was derived from the accident of the Fukushima Dai-ichi Nuclear Power Plant in 2011, was 0.14 Bq m−3 (or 1.19 Bq m−3 after the decay correction to the accident date). Although the vertical inventory of 134Cs decreased between 2014 and

Besides the presence of naturally occurring primordial radionuclides at varying levels in soils, the source of additional natural radioactivity content in agricultural land soils is mainly due to the presence of NORM in the fertilizers. Natural Radioactivity content is determined in ten different types of fertilizers available in Villupuram District, Tamilnadu State and influence of these, if any,

Abstract Trace element availability and radioactivity concentrations of marine sediments of AKKUYU Nuclear Power Plant site were determined. The measured Cd, Cr, Cu, Mn, Ni, Pb and Zn concentrations were 3.4 ± 0.020, 22 ± 0.94, 17 ± 0.66, 226 ± 11.9, 58.9 ± 10.3, 8.3 ± 0.45 and 39.9 ± 1.65 ppm, respectively. Cd, Mn and Ni enrichment were observed. The calculated mean 226Ra, 232Th, 40 K and 137Cs concentrations

The measurements of Cs isotopic ratios by TIMS were performed for the sample analysis used to evaluation of the nuclear data of 135Cs. To obtain a high intensity and stable ion beam, the effects of additive agents on the ionization of Cs were examined. The effect of silicotungstic acid on the ionization of Cs was the largest among the additive agents discussed in this study, while this also showed

In this study bevacizumab was labeled with 99mTc using p-SCN-Bzl-TCMC as a chelator for non invasive imaging of VEGF receptor in ovarian tumor Sprague Dawley rat and New Zealand rabbit models. High radiochemical purity and stability were observed using 0.4 mL of conjugated TCMC-bevacizumab. In vitro binding studies showed higher uptake of labeled conjugated bevacizumab with high metastatic SKOV-3 ipl

Graphene/graphene nanoribbons hybrid aerogel (GA/GNRs) was prepared via a hydrothermal process by using graphene oxide as precursor, and the graphene oxide nanoribbons unzipped from multi-walled carbon nanotubes were compound together. Various techniques were used to investigate the morphology, surface properties and structure of aerogel samples. Besides, the adsorption properties of the hybrid aerogel

This exploratory research focused on the adsorption of Sr(II) on the sodium dodecyl sulfate modified palygorskite (SDS/Pal). The ion exchange reactions existed, and the elements Mg, Al, Si and Fe on the Pal were exchanged by element Sr(II). The adsorption process could be well described by the pseudo-second-order kinetics and Langmuir model. The adsorption capacity increased from 24.91 to 61.87 mmol g−1

This study aimed to develop a simple method for synthesis of vitamin c-coated selenium nanoparticles which were then labeled with technetium-99m for further in vivo studies on normal and solid tumor induced mice. Results showed the formation of amorphous SeNPs with a mean size of (23 ± 5 nm). The radiolabelling yield of [99mTc-Vit_C (SeNPs)] was (96 ± 2%) with stability up to 6 h. Effective target

Nelarabine is a prodrug of the deoxyguanosine analogue, 9-β-D-arabinofuranose guanine (ara-G), which is used for the treatment of patients with T-cell acute lymphoblastic leukemia (T-ALL) and T-cell lymphoblastic lymphoma (T-LBL). For the clinical study of nelarabine and its active ingredient, ara-G, a suitable isotope-labeled internal standard was required. Effective and operationally simple methods

Stable isotope composition in precipitation, river water, and groundwater was used to investigate the hydrological conditions in the Pihe River catchment of Southwest China. Significant seasonal isotopic variations exist in precipitation and river water, and there is 1-month delay in the river water response to precipitation. The river water is gradually enriched under the influence of evaporation

Cd and Zn were separated from Co, from chloride solutions containing 16 different metal ions. The separation method used was liquid–liquid extraction. Two different chloride concentrations, 0.5 and 5 mol/kg, were tested. Aliquat 336 in toluene was used as extractant. It is shown that Li2SO4 can back-extract the metals. Distribution ratios were determined using radiotracers or inductively coupled plasma

This work is concerned with the development of a simple and accurate procedure for trace elements determination in infusion of medicinal plants using neutron activation analysis. The developed scheme involves irradiation of herb (tea in the present work) before immersion into boiled water and then analyzing the induced radioactivity in the infusion using HPGe detector to determine the concentration

Danshensu (DSS) is a bioactive compound isolated from the Chinese herb Radix Salviae Miltiorrhizae, which has been applied for the treatment of angina pectoris. The stable isotope-labelled DSS is required to be used for clinical studies and biological sample analysis. This study aims to synthesize deuterium-labelled DSS to change the status of DSS without internal standard, and to accelerate the research

In 2018, “negative ion powder” mattress produced by a South Korean manufacturer producing a dose rate of > 1 mSv/year, was found to have monazite powder in it. In order to verify if other products advertised as containing “negative ion powder” were also hazardous, an investigation had been carried out by the Atomic Energy Council and Institute of Nuclear Energy Research in Taiwan. By the end of April

Quinoline Silicate Lewatit Composite and activated Lewatit were prepared and tested for uranium removal from sulfate solution. Uranium sorption capabilities of the tested adsorbents was estimated under different conditions; uranium initial concentration, pH, contact time, temperature, adsorbent dose and interfering ions. Experimental data obeyed Langmuir isotherm model with 69.44 mg/g and 217.39 mg/g

To improve detection sensitivity for interesting radionuclides in measurements of environmental samples by Broad Energy Germanium detectors, the Pulse Shape Discrimination method using rise-time ratio is introduced. A certified soil sample and a typical squid-ash sample were measured by a well-shielded BEGe spectrometer. Minimum Detection Activities for the 722.9 keV and 949.8 keV peaks from the squid-ash

In a systematic study of light charged particle induced nuclear reactions we investigated the excitation functions of deuteron induced nuclear reactions on natural lutetium targets. Experimental excitation functions up to 50 MeV on high purity natLu were determined using the standard stacked foil activation technique. High resolution off-line gamma-ray spectrometry was applied to assess the activity

The detection of missing radioactive material is an important capability for safeguards measurements. Gamma ray signatures provide sample information, but interpretation is complicated by measurement environments. To determine if machine learning is a viable analysis option, three algorithms are applied to gamma ray detection data to assess their success at identifying missing sources. Preliminary

Ultra-performance liquid chromatographic technique was applied for the first time for determination of radiochemical and chemical purity of [11C]methionine with measurement time less than 2 min. The pH and eluent strength of mobile phase were optimized to achieve a gradient elution for separation of non-radioactive impurities as well as radioactive ingredients. The developed method was validated according

The stable isotope-labeled rosuvastatin was requested in order to fully understand the metabolic process of rosuvastatin. An effective synthesis approach was developed for [2H4] rosuvastatin calcium. After ten steps, [2H4] rosuvastatin calcium was prepared with excellent chemical purification and isotope enrichment which can be applied as an internal standard. Moreover, this synthesis method could

The processes of material transport in oceans and their exchange with the land mass are complex and are a concern of interest to many researchers. Seawater and surface sediment samples from Tarapur, Mumbai and Goa from west coast of India were collected and analysed for 226Ra and 228Ra. The activity levels of 226Ra ranged from 19 to 36 Bq/kg while the levels of 228Ra ranged from 25 to 55 Bq/kg in sediments

The present study focuses on the effect of natural radioactivity of some common building materials to humans. The main radiological risk assessment parameters such as radium equivalent, dose rate, annual effective dose equivalent and hazard indices were determined using Gamma ray spectrometry for individual building materials and their three different combinations. On comparing the results with world

Proton-induced fission of 232Th was studied in a wide proton energy range 20–140 MeV. A large amount of experimental cross sections for individual and cumulative formation of 232Th fission products were determined by means of stacked-foil irradiation followed by high-resolution γ-ray spectrometry. The obtained results were compared with available literature data and theoretical calculations performed

The sorption behavior of 89Zr on hydroxyapatite (Ca10(PO4)5(OH)2, HA) nanoparticles in an aqueous medium and 0.9% NaCl at various pH values was studied. The fast kinetics of the process was determined; the stability of the obtained conjugate in a model biological medium at 25 and 37 °C was shown. The possibility of further use of the 89Zr@HA conjugate in various radiopharmaceuticals is discussed.

Seawater and salt samples (from saltpan) were collected across Goa, India. EDXRF method has been developed for the analysis of V, Cr, Fe, Cd, and Pb in seawater. Zn, Co and As were analyzed by other techniques in seawater. Salt samples were analyzed using EDXRF for all eight target elements. The concentration of Pb, Cr, and V in seawater indicates the significant influence of anthropogenic activity

Solvent extraction of Eu(III) and Nd(III) from aqueous medium was investigated by sulfasalazine in benzoyl alcohol as single extractant and then with synergic mixture of sulfasalazine and 1,10-phenanthroline in benzyl alcohol. The synergic mixture was found to extract studied rare earth elements with higher distribution coefficients. All cations studied have shown negligible effect on the extraction

In the original publication of the article, the eighth author’s name and Figure 1 were published incorrectly.

Titanium dioxide/polyethylene glycol (TiO2/PEG PNC)-nanocomposite was prepared using the wet chemical method. Physico-chemical characterization of TiO2/PEG PNC is studied by TEM, FTIR, XRD, DTA-TGA, particle size distribution, and pore size analysis. TiO2/PEG PNC used for sorption of 134Cs and 60Co radionuclides. The TiO2/PEG PNC sorption monolayer capacities towards 134Cs and 60Co radionuclides at

In this present research, twenty-five drinking water samples were collected in Erbil Governorate in the Iraqi Kurdistan Region and analyzed for radon and radium activity concentrations. The measurements have been carried out using RAD7 detector and NaI(Tl) scintillation detector. The obtained values of radon concentration in drinking water samples are below the maximum contamination level 11.1 Bq/l

In this study, the natural radioactivity levels were determined for the deep mud samples taken from Van Lake. 226Ra, 232Th and 40K natural radionuclides concentration analysis were performed using high-purity germanium detector and relevant radiological hazard parameters were also appraised. Furthermore, the concentrations of heavy metals were measured using ICP–OES device. While the average 226Ra

210Po, 210Pb, and 137Cs activities were measured using gamma and alpha spectrometry in commonly consumed seafood collected from the local fish market of Kenitra, Morocco. 210Po activity ranged from 0.76 to 182.5 Bq kg−1 w.w, while 210Pb and 137Cs activities were 1 and 4 Bq kg−1 w.w, respectively. The potential health risks associated with the consumption of seafood were assessed through the calculation

The long-term stability and homogeneity of thoron progeny are key to the performance of a thoron calibration chamber, which is vital to quality assurance in measuring thoron progeny. It is difficult to build a stable and high level of thoron progeny because the half-life of 212Pb is long. Thus, a stable and efficient compensation system is necessary to compensate for the loss of thoron progeny caused

The removal of Co2+ in aqueous solution by spent green tealeaves (SGTL) was studied in batch conditions. The bio-sorbent was characterized by the infrared spectroscopy, Boehm’s titration and by pHpzc. The optimum pH value was found in the range of 4 to 6. The sorption was fast, obeyed the pseudo second order model, and favored at low temperature. The bio-sorption capacity recorded a rate of 83.52%

The purpose of the study is to explore the sorption behaviour of anthropogenic radionuclides in the Vltava River catchment in the Czech Republic, which could be influenced by an assumptive severe nuclear accident. Radionuclide sorption was described by distribution coefficients between water and sediment or suspended solids, respectively. Then, possible correlations between radionuclide sorption and

This paper reports the results obtained during an intercomparison exercise for the determination of difficult to measure radionuclides in activated reactor pressure vessel (RPV) steel samples. In total, eight laboratories participated analysing 14C, 55Fe and 63Ni activity concentrations in RPV steel. In addition, some laboratories also analysed 60Co activity concentrations. Corresponding activity concentrations

The k0-based internal monostandard INAA method (IM-NAA) has been investigated for the determination of elemental concentrations in non-standard geometry samples at the Dalat research reactor (DRR). The experiments were implemented at the rotary specimen rack of the DRR which the thermal neutron flux was (3.61 ± 0.11) × 1012 n cm−2 s−1. In this work, the concentration analysis of Montana II Soil (SRM

A high-resolution gamma-ray spectrometer was applied to measure the activity concentration of natural and artificial radionuclides 226Ra, 232Th, 40K, and 137Cs in 14 brands of infants powdered milk consumed in Egypt. The average activity concentrations were 0.91 ± 0.20, 0.60 ± 0.11, 477 ± 25 and 0.42 ± 0.11 Bq kg−1 for 226Ra, 232Th, 40K, and 137Cs, respectively. The total annual effective dose for

Forced hydrolyses in the precipitation systems (a) Fe(NO3)3/Fe2(SO4)3 and FeCl3/Fe2(SO4)3 and (b) FeCl3/N-guanylurea sulphate were investigated using 57Fe Mössbauer and FT-IR spectroscopies and scanning electron microscopy (FE SEM). Forced hydrolyses of Fe(NO3)3/Fe2(SO4)3 solutions at 90 °C yielded superparamagnetic goethite nanorods, whereas in the case of FeCl3/Fe2(SO4)3 solutions the clusters of

The adsorption capacity of the water hyacinth-derived biochar on U(VI) was investigated in this study. The as-prepared sample was characterized by methods of SEM, XRD, XPS, FT-IR and BET. Functional groups on the biochar surface could undergo complexation with U(VI). Effects of adsorption dose, temperature, contact time, solution pH and ionic strength were studied by static batch experiments. Results

Cement is an important component of concrete used as a shielding material in nuclear accelerators and reactors. Hence cement samples should be analysed for the presence of certain trace elements that may get activated by neutrons emitted during the production of radioisotopes in an accelerator, so as to minimize the low level radioactive waste to be handled during decommissioning. With this motivation

Abstract In this paper, diatomite/nano titanium dioxide composite (DNTD) was used as adsorbent to remove iodate from aqueous solution under different conditions. The maximum distribution coefficient could be up to 370 mL g−1 in acidic environment. The sorption speed is very fast and satisfies the pseudo-second-order equation. The sorption isotherm is well described by the Freundlich model. The sorption

In this study 2k experimental designs were used for the optimization of an instrumental neutron activation analysis method for the determination of bromine, chlorine, magnesium, manganese, potassium, sodium and vanadium in biological matrix materials. Depending on radionuclide half-lives, 23 or 24 experimental designs were used with irradiation time, sample–detector distance, counting time and sample

In this work, the magnetic hydroxyapatite composite (Fe3O4@HAP) was prepared and used to remove of U(VI). The characterizations of transmission electron microscope and vibrating sample magnetometer indicated that the average size and saturation magnetizations (Ms) of Fe3O4@HAP was about 360 nm and 20.89 emu g−1, respectively. The results of solid-phase extraction indicated that at pH 5.0, the removal

A convenient and inexpensive approach for the synthesis of deuterium-labeled thiamphenicol was described. DL-threo-Thiamphenicol-methyl-d3 was prepared with high chemical purity and isotopic enrichment via a six-step process starting from 4-bromobenzaldehyde and DMSO-d6 by employing microwave-assisted copper-mediated methylthiolation and modified Wulff’s asymmetric aziridination.

A Prompt Gamma-ray Neutron Activation Analysis (PGNAA) facility was set up using a thermal neutron beam at Dhruva research reactor. It was utilized for non-destructive quantification of total boron in refractory neutron absorbers and 10B atom% in B4C ceramics having natural and enriched 10B composition by measuring the 478 keV prompt gamma-ray from 10B(n,αγ)*7Li. Self-shielding correction was carried

Thin layer activation technique (TLA) has been used for measurement of wear rate of disc gears under lubricated condition. A synthetic base lubricant was blended with four different types of additives, such as, hexagonal boron nitride (h-BN), molybdenum disulphide (MoS2), graphite and copper nanoparticles (Cu np). The wear rate of the disc gear was measured in presence of individual lubricant formulations

Zr-1%Nb alloy is used as cladding material in pressurised water reactors (PWR). Diffusion of hydrogen in this material is one of the important input parameters required for simulating the kinetics of hydrogen embrittlement. For this purpose, one end of cut piece of Zr-1%Nb alloy clad tube of PWR was polished, electrochemically charged with hydrogen and then annealed at required temperatures and time

In this paper, we studied the features of stable and radioactive Cs(I), Sr(II) and Co(II) ions sorption on Ti–Ca–Mg phosphates. The significant differences in the sorption of macro quantities of stable Cs+, Sr2+ and Co2+ ions and trace concentrations of 137Cs, 90Sr and 60Co radionuclides were found. It has to be taken into account for evaluation the effectiveness of sorbents for the treatment of real

Uranium is a naturally occurring radioactive element. The higher concentrations of U in waters can cause chemical as well as radiological toxicity. In the present study 48 water samples were collected from the drinking/ground water sources in Narsipatnam Revenue division of Visakhapatnam District of Andhra Pradesh during pre and post monsoon seasons. Distribution of U has been measured and consequent

The objective of this work was to develop a potential selective radiotracer for the non-invasive assessment of heart imaging. [125I]iododobutamine was obtained via direct electrophilic substitution reaction with a high labeling yield of 96.79 ± 0.86%. The in vivo biodistribution of iodinated dobutamine showed high heart uptake of 31.49 ± 1.3%ID/g at 2 min after injection with low lungs and liver consumption

To assess the capability of Kyoto University Research Reactor to supply the domestic needs of medical isotopes, its neutron flux has been fully characterized. The production rates of theranostics radionuclides 177Lu (from 176Lu (n, γ) 177Lu), 176Lu (n, γ) 177mLu/177Lu and 176Yb (n, γ) \(^{177} {\text{Yb}}\mathop{\longrightarrow}\limits{{\beta^{ - } (1.88\;{\text{hr}})}}^{177} {\text{Lu}}\) reactions)

Uranyl phosphate synthesis (MUO2PO4, M = Na+, K+, NH4+) by diffusion method, direct and pH-controlled precipitation has been performed and compared. Chemical and thermogravimetric analysis revealed compound stoichiometry to be in good agreement with ideal mineral phases (sodium uranyl phosphate (NaUO2PO4⋅xH2O), meta-ankoleite (KUO2PO4⋅3H2O) and uramphite ((NH4)UO2PO4⋅3H2O)) except for sodium and ammonium

In this study, the halloysite nanotubes was characterized and the adsorption of Th(IV) and U(VI) on halloysite nanotubes was investigated as a function of contact time, adsorbent dosage, pH, ionic strength, initial U(VI) concentration and temperature using batch method. Meanwhile, the adsorption mechanism of uranium and thorium on halloysite nanotubes was discussed. The microscopic results displayed

Current research in the accelerator technology is focused towards achieving high energy, intense beams by minimizing conversion losses during beam acceleration. In such high current facilities, induced activity in structural materials become primary concern for radiation protection and materials like Ta and Nb, with low induced activity generation, high corrosion resistance characteristics are preferred

The distillation behaviors of some fission product fluorides in LiCl–KCl system were investigated. For rare earth element, the corresponding decontamination factors (DFs) of Ce in 5 wt% CeF3–LiCl–KCl salts were over 100 at 1040 K and 13 Pa. For SrF2, the very poor DFs was deduced for the presence of more volatile SrClF, while Zr4+ was observed to complex easily with F− and Cl−, which affected its evaporation

Microliter volumes are used in electrochemical detection and preconcentration of radionuclides to reduce the dose received by researchers and equipment. Unfortunately, there is a lack of analysis of radionuclides with coupled electrochemical techniques and microliter volume reactors. The goals of this work are (1) to develop a miniaturized micro-electrochemical quartz crystal microbalance (μeQCM) reactor