Isotopes in Environmental and Health Studies最新文献_第10页

Museum-archived and recent acquisition nitrates from the Atacama Desert, Chile, South America: refinement of the dual isotopic compositions (δ¹⁵N vs. δ¹⁸O). 南美智利阿塔卡马沙漠博物馆存档和最新采集的硝酸盐:双同位素组成(δ15N与δ18O)的细化。

IF 1.3 4区环境科学与生态学

Isotopes in Environmental and Health Studies Pub Date : 2022-03-01 Epub Date: 2021-10-30 DOI: 10.1080/10256016.2021.1990913

Chitoshi Mizota, Robin Hansen, Takahiro Hosono, Azusa Okumura

{"title":"Museum-archived and recent acquisition nitrates from the Atacama Desert, Chile, South America: refinement of the dual isotopic compositions (δ15N vs. δ18O).","authors":"Chitoshi Mizota, Robin Hansen, Takahiro Hosono, Azusa Okumura","doi":"10.1080/10256016.2021.1990913","DOIUrl":"https://doi.org/10.1080/10256016.2021.1990913","url":null,"abstract":"Sodium nitrate ores from the Atacama Desert in South America were economically important as they represented huge natural resources for the fertilizer and explosives industries during the early nineteenth to early twentieth centuries. Nitrogen and oxygen isotope ratios (δ15N and δ18O) of these desert nitrates generally show unique compositions (from close to 0 and up to ca. +50 ‰, respectively). The nitrates indicate the provenance as atmospheric in origin due to the mass-independent photochemical reaction of nitric oxide (NO) with ozone (O3) in the atmosphere to produce nitrate (NO3-). This paper examines the previously existing isotope data for specimens acquired from the Atacama Desert. It then reports new data from dual isotope analysis of historic nitrate specimens archived in museums in the UK. In the stable isotope signatures for nitrates from two areas of the Atacama Desert, Tarapacá in the north and Antofagasta in the south, were examined, and this analysis enabled a more detailed definition of their isotopic compositional ranges. This improved database is useful for tracing the provenance of the historic nitrates used in gunpowder and saltpetre, and also the cause of nitrate pollution in natural environments for which routine chemistry alone cannot provide the definite evidence for the origin.","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39577604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Observing the water handling in humans to resolve the role of the interstitium: preliminary results of the usability of deuterium oxide and bio-impedance analysis - a pilot analysis. 观察人体内的水处理以解决间质作用:氧化氘和生物阻抗分析可用性的初步结果-一个试点分析。

IF 1.3 4区环境科学与生态学

Isotopes in Environmental and Health Studies Pub Date : 2022-03-01 Epub Date: 2022-01-24 DOI: 10.1080/10256016.2022.2026349

Kim Pauwaert, Samuel Bodé, Upeshka Sewwandi Alwis, Toon Mylle, Pascal Boeckx, Joris Delanghe, Karel Everaert, Saskia Roggeman

{"title":"Observing the water handling in humans to resolve the role of the interstitium: preliminary results of the usability of deuterium oxide and bio-impedance analysis - a pilot analysis.","authors":"Kim Pauwaert, Samuel Bodé, Upeshka Sewwandi Alwis, Toon Mylle, Pascal Boeckx, Joris Delanghe, Karel Everaert, Saskia Roggeman","doi":"10.1080/10256016.2022.2026349","DOIUrl":"https://doi.org/10.1080/10256016.2022.2026349","url":null,"abstract":"The aim of this research was to evaluate the relevance of using deuterium oxide (2H2O) and bio-impedance analysis (BIA) to assess size and function of the interstitium for urological research. Nineteen volunteers were recruited to this prospective trial combining ingestion of 2H2O and BIA. Blood samples were obtained every 10 min after ingestion of 2H2O. Urine was collected before and after the experiment. BIA was performed every 5 min. Body position was alternated to study the effect on fluid distribution. First order kinetics were assumed for the uptake of 2H2O from the gastrointestinal tract to the blood. Sex seemed to have an influence with a significantly slower exchange for women (p = 0.041, men: 0.052 min-1, women: 0.038 min-1). Impedance measured in legs (men: p = 0.012, women: p = 0.008) and trunk (both p < 0.001) decreased significantly with posture change. These changes probably reflect the orthostatic redistribution of fluid with an increase of fluid in both trunk and legs. Both methods were tested and found to be useful for further urological research. Significant gender differences in 2H2O uptake dynamics from the gastrointestinal pool were observed. An impact of posture changes on the electrical impedance measured was observed.","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39731606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of phenotypic variability on the oxygen and hydrogen isotope compositions of grains in different winter wheat varieties. 表型变异对不同冬小麦品种籽粒氧、氢同位素组成的影响

IF 1.3 4区环境科学与生态学

Isotopes in Environmental and Health Studies Pub Date : 2022-03-01 Epub Date: 2021-11-30 DOI: 10.1080/10256016.2021.2002855

Florian Cueni, Daniel B Nelson, Ansgar Kahmen

{"title":"Effects of phenotypic variability on the oxygen and hydrogen isotope compositions of grains in different winter wheat varieties.","authors":"Florian Cueni, Daniel B Nelson, Ansgar Kahmen","doi":"10.1080/10256016.2021.2002855","DOIUrl":"https://doi.org/10.1080/10256016.2021.2002855","url":null,"abstract":"Stable isotope analyses are the leading method for geographic origin determination, especially of plant-based agricultural products. Origin analysis is typically done by comparing a suspicious sample to reference materials with known geographic origin. Reference materials are usually collected at the species level, assuming different varieties of a species to have comparable isotope compositions within a given location. We evaluated whether different phenotypes that are expressed in different varieties of winter wheat (Triticum aestivum L.) influence the oxygen (δ18O) and hydrogen (δ2H) isotope composition of plant tissue water and organic compounds. We found that mean δ18O and δ2H values among winter wheat varieties did not differ significantly in leaf water, however, differed significantly in bulk dried grain tissue. The differences in bulk dried grain δ18O and δ2H values among varieties can be related to differences in phenotypic trait expression among varieties. Despite this substantial phenotypic variability, the overall variability of bulk dried grain δ18O and δ2H values among varieties was small (SD 0.54 ‰ for oxygen, 3.60 ‰ for hydrogen). We thus conclude that reference materials collected at the species level should be sufficient for geographic origin analysis of winter wheat and possibly other cereals using δ18O and δ2H values.","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39791174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Addressing the unfulfilled codex standard for honey for stingless bee honey through lyophilization 通过冻干处理无刺蜜蜂蜂蜜不符合食品法典标准

IF 1.3 4区环境科学与生态学

Isotopes in Environmental and Health Studies Pub Date : 2022-02-28 DOI: 10.1080/10256016.2022.2041006

Chin-Hong Yong, S. A. Muhammad, Widad Fadhullah, H. M. Hassan, A. Mohd Rodhi, Mohd Zulkifli Mustafa, S. Kelly

{"title":"Addressing the unfulfilled codex standard for honey for stingless bee honey through lyophilization","authors":"Chin-Hong Yong, S. A. Muhammad, Widad Fadhullah, H. M. Hassan, A. Mohd Rodhi, Mohd Zulkifli Mustafa, S. Kelly","doi":"10.1080/10256016.2022.2041006","DOIUrl":"https://doi.org/10.1080/10256016.2022.2041006","url":null,"abstract":"ABSTRACT Some studies have found that the nutritional values of stingless bee honey (SBH) may be similar if not more than normal honey, prompting the Malaysian government to promote it as a superfood. However, SBH does not fulfil the Codex Standard for Honey (CODEX STAN 12-19811) in terms of moisture content and the lack of protein to be analysed with Internal Standard Carbon Isotope Ratio Analysis (ISCIRA). Hence, a lyophilization process was introduced prior to stable carbon isotope analysis of SBH to address both of these issues. It was found that once moisture content was decreased to a level below 20 % for 19 SBH samples, the percentage increment of protein extracted from the samples varied between 6 and 385 % relative to protein extracted from SBH before lyophilization with nine samples found to be adulterated. Caution is necessary when lyophilizing the SBH as significant isotope shifts were seen for SCIRA and ISCIRA values. Nevertheless, the carbon isotope shifts did not change the final outcome of the ‘pass’ or ‘fail’ of the adulteration result. Overall, the removal of water from SBH is required but caution is necessary as carbon isotope shifts were observed as SBHs underwent the lyophilization process.","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2022-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42082538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Dr Ingeborg Maaß 谢谢称赞

IF 1.3 4区环境科学与生态学

Isotopes in Environmental and Health Studies Pub Date : 2022-01-02 DOI: 10.1080/10256016.2022.2035380

Horst-Michael Nitzsche, Peter Krumbiegel, Gerhard Strauch

{"title":"Dr Ingeborg Maaß","authors":"Horst-Michael Nitzsche, Peter Krumbiegel, Gerhard Strauch","doi":"10.1080/10256016.2022.2035380","DOIUrl":"https://doi.org/10.1080/10256016.2022.2035380","url":null,"abstract":"With sadness, we announce the death of our long-standing colleague and mentor Dr Ingeborg Maaß. She passed away on 19 December 2021 in her 95th year of life. After graduating in chemistry, Ingeborg Maaß started to work in a newly founded research group dealing with stable isotopes in Leipzig in 1956. Justus Mühlenpfordt, the founder of our isotope journal and former German nuclear researcher, launched a stable isotope research centre under the umbrella of the German Academy of Sciences, called Institute of Physical Tissue Separation, later Institute of Stable Isotopes. For many years, Dr Ingeborg Maaß successfully managed the working group ‘Sample chemistry’within the department ‘Application of stable isotopes’ of this institute. ‘Sample chemistry’ was a key group to transform complex chemical compounds into simple substances applicable for isotope analyses in that time before newer isotope analysis equipment could take over this work. Later on, Dr Maaß headed a new working group ‘Application of stable isotopes in geology’ dealing with studies on the formation of natural gas and oil, especially in relation to their source materials. At that time, such investigations were an essential contribution for oil and gas exploration in former East Germany. Therefore, much of her scientific work dealt with the investigation of isotope variations in different organic matter from both geological and biological origins. With strong commitment, she perfected coalification experiments using organic material of different sources and genesis from scores of core and coal samples [1,2]. Besides these main topics she was always interested in the application of isotope techniques to other scientific problems, e.g. in biology [3], physiology, and the environment [4]. She imparted her great experience and knowledge to students and young scientists to prepare their doctoral thesis. Her work enthusiasm was outstanding and a good example for her followers. After finishing her professional life, Ingeborg Maaß returned to her old home country Mecklenburg.","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2022-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49212671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A protocol for nitrogen isotopic measurement of dissolved organic nitrogen with a combination of oxidation-denitrification and gas phase diffusion methods. 用氧化-反硝化和气相扩散相结合的方法测定溶解有机氮的氮同位素。

IF 1.3 4区环境科学与生态学

Isotopes in Environmental and Health Studies Pub Date : 2021-12-01 Epub Date: 2021-07-16 DOI: 10.1080/10256016.2021.1948411

Hai Thi Thuy Cao, Takashi Nakamura, Tadashi Toyama, Kei Nishida

{"title":"A protocol for nitrogen isotopic measurement of dissolved organic nitrogen with a combination of oxidation-denitrification and gas phase diffusion methods.","authors":"Hai Thi Thuy Cao, Takashi Nakamura, Tadashi Toyama, Kei Nishida","doi":"10.1080/10256016.2021.1948411","DOIUrl":"https://doi.org/10.1080/10256016.2021.1948411","url":null,"abstract":"Isotopic tracing technique is one of the most effective methods to identify nitrogen source and fate in aquatic environments. Although dissolved organic nitrogen (DON) is a key component in nitrogen cycles, information on nitrogen stable isotope ratios in DON (δ15N-DON) is limitedly available for its low recovery through a direct measurement. Indirect measurement is based on mass balance calculations and easy to use with high recovery of DON. However, in theory, the result from mass balance calculation is sensitive to the level of DON content, and its applicability remains to be examined for waters containing a variety of DON content in total dissolved nitrogen (TDN). In this study, we established a protocol for indirect measurement of δ15N-DON values based on the combination of multiple analytical methods. Precision and accuracy in the measurement were assessed by varying the composition of DON and dissolved inorganic nitrogen, and quantitation thresholds were presented at different acceptable levels. The results illustrated an advantage of the developed protocol possibly applicable to water samples particularly with low DON content that is commonly detected in freshwater. This method is expected to expand the use of isotope tracing techniques for understanding the nitrogen cycle in water environments.","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/10256016.2021.1948411","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39190882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Assessment of intake of ²¹⁰Po and ²¹⁰Pb isotopes from cow's milk in Poland. 波兰从牛奶中摄取210Po和210Pb同位素的评估。

IF 1.3 4区环境科学与生态学

Isotopes in Environmental and Health Studies Pub Date : 2021-12-01 Epub Date: 2021-11-16 DOI: 10.1080/10256016.2021.1998039

Alicja Boryło, Marcin Kaczor, Jarosław Wieczorek, Grzegorz Romańczyk

{"title":"Assessment of intake of 210Po and 210Pb isotopes from cow's milk in Poland.","authors":"Alicja Boryło, Marcin Kaczor, Jarosław Wieczorek, Grzegorz Romańczyk","doi":"10.1080/10256016.2021.1998039","DOIUrl":"https://doi.org/10.1080/10256016.2021.1998039","url":null,"abstract":"Milk has been known for its nutritional properties for centuries and is often the staple of the diet in many countries. Therefore, monitoring of milk composition seems to be a relevant task as it was the purpose of this study to compare levels of 210Po and 210Pb in several Polish voivodeships. The methodology was based on mineralization, loss on an inorganic matrix and concentration measurement on an alpha spectrometer. The concentrations of 210Po and 210Pb in collected milk samples were measured using alpha spectrometry and calculations, respectively. The results showed that the lowest concentration of 210Po is 2.8 ± 0.2 mBq l-1 and the highest is 56.3 ± 0.7 mBq l-1 while the 210Pb concentrations are in the range from 2.8 ± 0.2 to 44.0 ± 1.7 mBq l-1. The associated annual effective doses for adults jmrange from 3.5 ± 0.1 to 11.0 ± 0.2 µSv a-1 for 210Po and from 2.0 ± 0.1 to 5.0 ± 0.1 µSv a-1 for 210Pb. The lowest doses were noticed in Kuyavian-Pomeranian Voivodeship and the highest values were found in Lesser Poland Voivodeship. The results show that the annual effective dose in individual provinces is not dangerous to health. However, there are significant differences between highly and lowly industrialized voivodeships.","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39881283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Determination of radioactivity level of water supply network in Trabzon province, Turkey. 土耳其特拉布宗省供水管网放射性水平测定。

IF 1.3 4区环境科学与生态学

Isotopes in Environmental and Health Studies Pub Date : 2021-12-01 Epub Date: 2021-09-07 DOI: 10.1080/10256016.2021.1972996

Belgin Küçükömeroğlu, Ayşegül Şen, Selcen Uzun Duran, Ali Çiriş, Halim Taskin, Hakan Ersoy

{"title":"Determination of radioactivity level of water supply network in Trabzon province, Turkey.","authors":"Belgin Küçükömeroğlu, Ayşegül Şen, Selcen Uzun Duran, Ali Çiriş, Halim Taskin, Hakan Ersoy","doi":"10.1080/10256016.2021.1972996","DOIUrl":"https://doi.org/10.1080/10256016.2021.1972996","url":null,"abstract":"In the present study, the radioactivity levels of water samples collected from the main water supply network in Trabzon province and districts and soil samples taken from the vicinity of the water network were measured. An Alphaguard-PQ2000 radon gas detector was used to determine the seasonal radon gas level in the water samples. An HPGe detector was used to determine the level of radioactivity in soil and water samples. The average concentration of 222Rn in drinking water ranges from 0.56 ± 0.51 to 13.3 ± 5 Bq L-1. In water samples, average gross alpha and gross beta values were measured as 8 ± 1 and 43 ± 1 mBq L-1, respectively. The average concentrations of 238U, 232Th, 137Cs, 40K radionuclides in soil were measured as 51 ± 2, 21 ± 2, 16 ± 1, 28 ± 7 Bq m-3, respectively. The average concentrations of 238U, 232Th, 137Cs, 40K radionuclides in drinking water were measured as 147 ± 5, 25 ± 2, 77 ± 2, 12 ± 2 mBq L-1, respectively. When the radon concentrations for drinking water were examined, it was found that the radon concentration of the three samples was above the limit value (11 Bq L-1) allowed by the US-EPA for drinking water. All other results are below the limit values.","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39395308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A density functional theory (DFT) study on reduced partition function ratios of oxygen species adsorbed on a Pt₁₉ cluster and oxygen isotope effects. 用密度泛函理论(DFT)研究了Pt19簇上氧的减配函数比率和氧同位素效应。

IF 1.3 4区环境科学与生态学

Isotopes in Environmental and Health Studies Pub Date : 2021-12-01 Epub Date: 2021-11-08 DOI: 10.1080/10256016.2021.1985488

Takao Oi, Yoshikazu Kikawada, Satoshi Yanase

{"title":"A density functional theory (DFT) study on reduced partition function ratios of oxygen species adsorbed on a Pt19 cluster and oxygen isotope effects.","authors":"Takao Oi, Yoshikazu Kikawada, Satoshi Yanase","doi":"10.1080/10256016.2021.1985488","DOIUrl":"https://doi.org/10.1080/10256016.2021.1985488","url":null,"abstract":"A density functional theory (DFT) computation on oxygen species adsorbed on platinum (Pt) catalyst surfaces has been carried out to elucidate oxygen isotope fractionation observed at the cathode of a polymer electrolyte membrane fuel cell (PEMFC). The Pt(111) catalyst surface was modelled by a Pt19 cluster, and O, OH, OHH, OO, OOH, OHOH and HOHOH were assumed to be the oxygen species adsorbed on the Pt(111) surface. The oxygen isotope reduced partition function ratios (RPFRs) of the adsorbed species were calculated using the vibrational frequencies obtained by normal mode analyses performed on the optimized structures. Various oxygen isotope exchange equilibria among the adsorbed oxygen species and oxygen and water molecules in the gas phase were examined using their RPFRs. Experimental observation that the lighter 16O is enriched in water molecules exhausted from the cathode is explainable in a satisfactory manner by assuming oxygen isotope exchange equilibria of O2 molecule with O, OH, OO and OOH adsorbed on the Pt(111) surface that appear in the first half of the conversion reaction from O2 to H2O and those of H2O molecule with the adsorbed oxygen species, OHH, OHOH and HOHOH, formed in the latter half of the conversion reaction.","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39854038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Natural radioactivity levels in benthic foraminifera Sorites marginalis as a pollution indicator. 底栖有孔虫(Sorites marginalis)天然放射性水平作为污染指标。

IF 1.3 4区环境科学与生态学

Isotopes in Environmental and Health Studies Pub Date : 2021-12-01 Epub Date: 2021-09-22 DOI: 10.1080/10256016.2021.1974854

Wafaa Rashed, Khaled Salahel Din, Mohamed Youssef

{"title":"Natural radioactivity levels in benthic foraminifera Sorites marginalis as a pollution indicator.","authors":"Wafaa Rashed, Khaled Salahel Din, Mohamed Youssef","doi":"10.1080/10256016.2021.1974854","DOIUrl":"https://doi.org/10.1080/10256016.2021.1974854","url":null,"abstract":"Sorites marginalis as one of the benthic foraminifer's genera were collected from three coastal lagoons (Abu Shaar, Umm al-Huwaytāt, and Marsa Shūni) on the Egyptian Red Sea coast and investigated for their 226Ra, 232Th, and 40K content using HPGe gamma-ray spectrometry. S. marginalis shells show high radioactivity levels with average activity concentration values of 251.8 ± 18.3, 86.8 ± 7.7, and 791.2 ± 57.6 Bq kg-1, 327.1 ± 11.4, 97.4 ± 7.1, and 751.6 ± 54.7 Bq kg-1, 246.6 ± 17.7, 65.1 ± 4.8, and 477.6 ± 34.8 Bq kg-1 for 226Ra, 232Th, and 40K in the samples from Abu Shaar, Umm al-Huwaytāt, and Marsa Shūni, respectively. 226Ra and 40K have a high tendency to accumulate in S. marginalis compared to 232Th. High bioaccumulation of the studied radionuclides was found for samples from Umm al-Huwaytāt and Abu Shaar lagoons. Radiological parameters such as radium equivalent activity, gamma absorbed dose rate in air, and outdoor annual effective dose were calculated, and values higher than the permissible limits were obtained. Based on the obtained results, the estimation of radioactivity levels in S. marginalis shells may serve as an indicator of marine environment pollution.","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39438780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1