Journal of Radioanalytical and Nuclear Chemistry最新文献_第4页

Adsorption of ytterbium(III) ions on ivy leaves marc: isotherm, kinetic and thermodynamic studies

IF 1.5 3区化学

Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2024-10-24 DOI: 10.1007/s10967-024-09778-y

Amr M. Emara, Emad M. Elsharma, Islam M. Abdelmonem

引用次数: 0

Experimental gamma coincidence spectra recorded in prompt gamma neutron activation analysis 中子激活分析中记录的实验伽马符合谱

IF 1.5 3区化学

Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2024-10-23 DOI: 10.1007/s10967-024-09822-x

Jeremy Roult dit Rouaux, Cedric Carasco, Laurent Loubet, Bertrand Perot, Leonie Tamagno, Johann Collot

引用次数: 0

Time-series observation of 210Pb sinking fluxes in the western North Pacific 北太平洋西部210Pb沉降通量的时间序列观测

IF 1.5 3区化学

Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2024-10-22 DOI: 10.1007/s10967-024-09801-2

Hajime Kawakami

{"title":"Time-series observation of 210Pb sinking fluxes in the western North Pacific","authors":"Hajime Kawakami","doi":"10.1007/s10967-024-09801-2","DOIUrl":"10.1007/s10967-024-09801-2","url":null,"abstract":"<div>We observed the lead-210 (210Pb) sinking flux in subarctic and subtropical regions of the western North Pacific Ocean over time. The 210Pb fluxes in the mesopelagic and bathypelagic zones were estimated from the disequilibrium between 210Pb and radium-226 (226Ra) in the water column over the 4 seasons during several years. In the subarctic region, 210Pb fluxes were larger (28–29 dpm m–2 d–1 at 500 m; 68–70 dpm m–2 d–1 at 4810 m) than those in the subtropical region (22–24 dpm m–2 d–1 at 500 m; 46–49 dpm m–2 d–1 at 4810 m). These results imply that the strength of the biological pump in the mesopelagic and bathypelagic zones is larger in the subarctic region than in the subtropical region of the western North Pacific. We also determined 210Pb in sinking particles collected by moored sediment traps. In the subarctic (subtropical) region, the annual average of trapped 210Pb flux at 500 and 4810 m were 3.0 (4.6) and 24.2 (18.6) dpm m–2 d–1, respectively. Estimated from the 210Pb flux in the water column and the 210Pb flux in the sinking particles in the sediment trap experiment, the trapping efficiencies at 500 m (10–20%) were about a half of those at 4810 m (35–40%) in the sediment trap experiment.</div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"333 12","pages":"6507 - 6514"},"PeriodicalIF":1.5,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142778557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Updated uranium reference material 231Pa/235U consensus model ages for nuclear forensics 更新铀参考材料231Pa/235U共识模型年龄核法医

IF 1.5 3区化学

Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2024-10-19 DOI: 10.1007/s10967-024-09818-7

Mark A. Edwards, Zsolt Varga, Amy M. Gaffney, Joanna S. Denton, John R. Engel, Matthew S. Gonzales, Theresa M. Kayzar-Boggs, Klaus Mayer, Adrian Nicholl, Matthew E. Sanborn, Robert E. Steiner, Cheng Tarng, Kerri C. Treinen, Maria Wallenius, Allison M. Wende

{"title":"Updated uranium reference material 231Pa/235U consensus model ages for nuclear forensics","authors":"Mark A. Edwards, Zsolt Varga, Amy M. Gaffney, Joanna S. Denton, John R. Engel, Matthew S. Gonzales, Theresa M. Kayzar-Boggs, Klaus Mayer, Adrian Nicholl, Matthew E. Sanborn, Robert E. Steiner, Cheng Tarng, Kerri C. Treinen, Maria Wallenius, Allison M. Wende","doi":"10.1007/s10967-024-09818-7","DOIUrl":"10.1007/s10967-024-09818-7","url":null,"abstract":"<div>Radiochronometry provides the model age of nuclear materials, which is useful for understanding the production history of materials found outside of regulatory control. Certified reference materials (CRMs) are important for radiochronometry to increase confidence in measurement quality; however, the absence of 231Pa/235U CRMs necessitates that nuclear forensic laboratories measure the 231Pa/235U model ages of preexisting uranium reference materials. Here, new consensus 231Pa/235U model ages are reported from three nuclear forensic laboratories for three reference materials using current analytical methods. These updated consensus values can be used for quality control of 231Pa/235U model age measurements.</div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"333 12","pages":"6547 - 6556"},"PeriodicalIF":1.5,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10967-024-09818-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142778280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A computational modeling of airflow and radon progeny deposition in human respiratory system 人体呼吸系统气流与氡子体沉积的计算模型

IF 1.5 3区化学

Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2024-10-19 DOI: 10.1007/s10967-024-09708-y

R. Rabi, L. Oufni, N. Kayouh

{"title":"A computational modeling of airflow and radon progeny deposition in human respiratory system","authors":"R. Rabi, L. Oufni, N. Kayouh","doi":"10.1007/s10967-024-09708-y","DOIUrl":"10.1007/s10967-024-09708-y","url":null,"abstract":"<div>The inhalation of radon and its decay products is the primary source of natural radiation exposure for the general population. The solid particles produced by radon decay are also radioactive and can easily penetrate deep into the lungs, causing damage to the airways. To better understand the harmful effects of inhaling radon decay, we have used a Computational Fluid Dynamics method to model the deposition of radioactive particles in the human respiratory system. This method was used to determine the effective dose resulting from exposure to radon progeny. The simulations have been conducted with representative breathing intensities of light (15 L/min), normal (30 L/min), and heavy (60 L/min) breathing under continuous breathing conditions. The numerical results show that larger particles are deposited more in the bronchi and at higher inhalation rates due to higher inertia. Furthermore, the airflow velocity field and deposition rates were obtained and discussed in detail. The dose conversion factor of radon decay products was calculated for different airflows, taking into account the deposition rates. The calculated dose conversion factor for attached fractions (6.62–11.35 mSv WLM−1) and unattached fractions (3.48–4.68 mSv WLM−1) is above the recommended range of 5.4–10.6 mSv WLM−1 obtained by the International Commission on Radiological Protection and also by the World Health Organization at a level of 10 mSv WLM−1.</div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"333 12","pages":"6485 - 6496"},"PeriodicalIF":1.5,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142778171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advancements in radiobiology techniques and applications for personalized radiation therapy in nuclear medicine 核医学个体化放射治疗的放射生物学技术与应用进展

IF 1.5 3区化学

Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2024-10-19 DOI: 10.1007/s10967-024-09804-z

Yibo He, Maher Ali Rusho, Soumya V. Menon, Mandeep Kaur, Majid S. Jabir, Sabrean Farhan Jawad, Thikra F. Hasan, Mazin A. A. Najm, Mohammed Abed Jawad, Ali J. Khelief

引用次数: 0

Conversion of barium sulfate into barium carbonate in rare earth acid insoluble slag using low-temperature roasting with sodium hydroxide 氢氧化钠低温焙烧稀土酸不溶性矿渣中硫酸钡转化为碳酸钡的研究

IF 1.5 3区化学

Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2024-10-19 DOI: 10.1007/s10967-024-09827-6

An Guo, Liusheng Ge, Xinjin Xiao, Huijuan Wang, Desheng Huang, Di Wu, Qiaofa Lan

{"title":"Conversion of barium sulfate into barium carbonate in rare earth acid insoluble slag using low-temperature roasting with sodium hydroxide","authors":"An Guo, Liusheng Ge, Xinjin Xiao, Huijuan Wang, Desheng Huang, Di Wu, Qiaofa Lan","doi":"10.1007/s10967-024-09827-6","DOIUrl":"10.1007/s10967-024-09827-6","url":null,"abstract":"<div>Rare earth acid insoluble slag (REAIS) is a low-level radioactive slag that is stored in most enterprises nowadays. Because of the pressure from negative environmental consequences and stock saturation, it is imperative to reduced dispose of REAIS. In this paper, we propose a sodium hydroxide-assisted low-temperature roasting method for the conversion of barium sulfate in REAIS (approximately 25% of REAIS). And the effects of the mixing method, mass ratio, carbon dioxide flow rate, roasting temperature, and roasting time on the conversion of barium salt were investigated. The results showed that the optimized process, which included a slurry mixing with a REAIS/NaOH mass ratio of 1:1, roasting for 3 h at 425 °C, and a carbon dioxide flow rate of 3 L min−1, produced more than 96% conversion rate of barium salt, 33% efficiency of sodium hydroxide, and 65% reduction rate of REAIS. The efficient conversion of barium salts in the REAIS could lead to the recovery of barium resources. This has made a significant contribution to REAIS reduction, lessening the impact on the environment and public health, and has provided a directional guideline for the reduction of REAIS emissions.</div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"333 12","pages":"6533 - 6540"},"PeriodicalIF":1.5,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142778279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quantified structural characteristics of granite and their constraints on radon exhalation 花岗岩的定量结构特征及其对氡释放的约束

IF 1.5 3区化学

Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2024-10-16 DOI: 10.1007/s10967-024-09820-z

Wen-kai Huang, Yan-shi Xie, Zheng-qing Wang, Yu Zhu, Qing-shuang Guo, Shi-li Han, Hai-yang He, Shan Liu, Qing-lin Sui, Guo-liang Ai

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99mTc-radiolabeling of a functionalized Carum carvi-derived quantum dots (CcQDs) as a new radiotracer for CT26 colon carcinoma tumor targeting in mouse 功能化Carum cari衍生量子点（CcQDs）作为靶向小鼠CT26结肠癌肿瘤的放射性示踪剂的99mtc -放射性标记

IF 1.5 3区化学

Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2024-10-16 DOI: 10.1007/s10967-024-09810-1

Maryam Mazaheri Tehrani, Mostafa Erfani, Mostafa Guodarzi

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Ultrasonication-enhanced regeneration of resin for adsorbing uranium from leach solutions generated via in-situ leaching 超声增强吸附原位浸出液中铀的树脂再生

IF 1.5 3区化学

Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2024-10-14 DOI: 10.1007/s10967-024-09775-1

Yiru Zhou, Yihan Yang, Guanghui Li, Chuanfei Zhang, Ying Xu, Baoan Ren, Liangshu Xia

引用次数: 0