Isotopes in Environmental and Health Studies最新文献

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Subterranean carbon flows from source to stygofauna: a case study on the atyid shrimp Stygiocaris stylifera (Holthuis, 1960) from Barrow Island (WA) 地下碳从碳源到海鞘动物群的流动:以巴罗岛(WA)的不腐虾Stygiocaris stylifera (Holthuis, 1960)为例
IF 1.3 4区 环境科学与生态学
Isotopes in Environmental and Health Studies Pub Date : 2022-05-04 DOI: 10.1080/10256016.2022.2071873
M. Saccò, W. Humphreys, N. Stevens, Matthew R. Jones, Fiona Takulis, E. Thomas, A. Blyth
{"title":"Subterranean carbon flows from source to stygofauna: a case study on the atyid shrimp Stygiocaris stylifera (Holthuis, 1960) from Barrow Island (WA)","authors":"M. Saccò, W. Humphreys, N. Stevens, Matthew R. Jones, Fiona Takulis, E. Thomas, A. Blyth","doi":"10.1080/10256016.2022.2071873","DOIUrl":"https://doi.org/10.1080/10256016.2022.2071873","url":null,"abstract":"ABSTRACT Groundwater biota are crucial for the ecological functioning of subterranean ecosystems. However, while knowledge of the taxonomic diversity of groundwater invertebrates (stygofauna) is increasing, functional ecological information is still limited. Here, we investigate seldom empirically tested assumptions around stygofaunal trophic plasticity in coping with oligotrophic habitats. We focus on Barrow Island (Western Australia), an ideal natural laboratory due to the occurrence of natural oil seeps in association with aquifers. The trophic position and food source use of the endemic atyid shrimp Stygiocaris stylifera (Holthuis, 1960) were assessed via δ 13C and δ 15N stable isotope analysis (SIA). Background information on the environmental conditions was gathered through hydrochemical data and δ 13C SIA combined with 14C data from dissolved inorganic/organic carbon and particulate organic carbon from groundwater samples. Our results indicate carbon enrichment in proximity to the natural oil seepage coupled with changes in trophic positions of S. stylifera from higher consumers/predators to biofilm grazers/decomposers. These results are consistent with an increased involvement of hydrocarbon seeps and associated microbial communities in the carbon flows and confirm potential for the trophic flexibility in stygofauna. Further investigations involving other trophic groups will help elucidate the functioning of the ecosystems at a community level.","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":"58 1","pages":"247 - 257"},"PeriodicalIF":1.3,"publicationDate":"2022-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46060062","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
Assessing land use influences on isotopic variability and stream water ages in urbanising rural catchments 评估土地利用对城市化农村集水区同位素变率和河流年龄的影响
IF 1.3 4区 环境科学与生态学
Isotopes in Environmental and Health Studies Pub Date : 2022-05-04 DOI: 10.1080/10256016.2022.2070615
Jamie Lee Stevenson, J. Geris, C. Birkel, D. Tetzlaff, C. Soulsby
{"title":"Assessing land use influences on isotopic variability and stream water ages in urbanising rural catchments","authors":"Jamie Lee Stevenson, J. Geris, C. Birkel, D. Tetzlaff, C. Soulsby","doi":"10.1080/10256016.2022.2070615","DOIUrl":"https://doi.org/10.1080/10256016.2022.2070615","url":null,"abstract":"ABSTRACT Stable water isotopes are invaluable in helping understand catchment functioning and are widely used in experimental catchments, with higher frequency data becoming increasingly common. Such datasets incur substantial logistical costs, reducing their feasibility for use by decision makers needing to understand multi-catchment, landscape-scale functioning over a relatively short period to assess the impact of proposed land use change. Instead, reconnaissance style surveys (high spatial resolution across the landscape at a lower temporal frequency, over a relatively short period) offer an alternative, complementary approach. To test if such sampling could identify heterogeneities in hydrological functioning, and associated landscape controls, we sampled 27 stream sites fortnightly for one year within a peri-urban landscape undergoing land use change. Visual examination of raw data and application of mean transit time and young water fraction models indicated urbanisation, agriculture and responsive soils caused more rapid cycling of precipitation to stream water, whereas mature forestry provided attenuation. We were also able to identify contiguous catchments which functioned fundamentally differently, meaning their response to land use alteration would also be different. This study demonstrated how stable water isotopes can be a valuable, low-cost addition to tools available for environmental decision makers by providing local, process-based information.","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":"58 1","pages":"277 - 300"},"PeriodicalIF":1.3,"publicationDate":"2022-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44942193","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: 5
A straightforward approach for assessing the effectiveness of membrane materials as radon (222Rn) barriers 一种评估膜材料作为氡(222Rn)屏障有效性的直接方法
IF 1.3 4区 环境科学与生态学
Isotopes in Environmental and Health Studies Pub Date : 2022-05-04 DOI: 10.1080/10256016.2022.2058500
M. Schubert, Diana Altendorf, H. Weiss
{"title":"A straightforward approach for assessing the effectiveness of membrane materials as radon (222Rn) barriers","authors":"M. Schubert, Diana Altendorf, H. Weiss","doi":"10.1080/10256016.2022.2058500","DOIUrl":"https://doi.org/10.1080/10256016.2022.2058500","url":null,"abstract":"ABSTRACT The ubiquitous presence of the radioisotope radon (222Rn) and its short-lived progeny (218Po, 214Pb, 214Bi, 214Po) is challenging in two respects: (i) Radon is a major issue regarding health-related problems due to potentially elevated radiation exposure of humans in dwellings, and (ii) due to the mobility of radon the short-lived progeny may cause complications in radionuclide detection in laboratories. Polymer membranes are an appropriate means for effectively preventing unwanted radon migration. However, most of the published literature focusses on robust membranes made for the large-scale sealing of dwelling substructures. Membranes that are suitable (at small-scale) for sealing purposes in radionuclide detection applications are only rarely discussed. In this paper, we present a straightforward practical approach that allows the effectiveness of any membrane to be assessed for any purpose related to radon sealing. Executing the approach requires only (i) a suitable container with inlet and outlet ports, (ii) a mobile radon detector, and (iii) any type of radon source material. The approach provides a tool that allows testing any available membrane for its applicability as radon barrier sheeting.","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":"58 1","pages":"301 - 310"},"PeriodicalIF":1.3,"publicationDate":"2022-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42799854","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
How do precipitation events modify the stable isotope ratios in leaf water at Lhasa on the southern Tibetan Plateau? 降水事件如何改变青藏高原南部拉萨地区叶片水的稳定同位素比率?
IF 1.3 4区 环境科学与生态学
Isotopes in Environmental and Health Studies Pub Date : 2022-05-03 DOI: 10.1080/10256016.2022.2062343
Yong Wang, Wusheng Yu, Lun Luo, Minghui Li, Xiaoming Liu, Rong Guo, Yaoming Ma, Baiqing Xu, Guangjan Wu, Chengyi Zhao, Zhaowei Jing, Feili Wei, J. Cui, Jingyi Zhang, D. Qu
{"title":"How do precipitation events modify the stable isotope ratios in leaf water at Lhasa on the southern Tibetan Plateau?","authors":"Yong Wang, Wusheng Yu, Lun Luo, Minghui Li, Xiaoming Liu, Rong Guo, Yaoming Ma, Baiqing Xu, Guangjan Wu, Chengyi Zhao, Zhaowei Jing, Feili Wei, J. Cui, Jingyi Zhang, D. Qu","doi":"10.1080/10256016.2022.2062343","DOIUrl":"https://doi.org/10.1080/10256016.2022.2062343","url":null,"abstract":"ABSTRACT Serving as a medium between source water and cellulose, leaf water contributes to the isotope ratios (δ 18O, δ 2H) of plant organic matter, which can be used for paleoclimate reconstruction. This study is the first to examine the diurnal variations in the δ 18O and δ 2H of leaf water on the southern Tibetan Plateau. The δ 18O and δ 2H of leaf water were relatively low when precipitation events occurred. In particular, 18O and 2H of leaf water became extremely depleted 5 h after the precipitation event. Our findings demonstrate that precipitation can modify the isotope ratios of leaf water from external and internal causes. First, precipitation events affect meteorological elements, lead to decreases in leaf transpiration, and immediately weaken the isotope enrichment of leaf water (‘rapid effect’ of precipitation). Second, precipitation events affect the internal plant–soil water cycle process, causing the plant to preferentially use deeper soil water, and the corresponding isotope ratios of leaf water exhibit extremely low values 5 h after precipitation events (‘delay effect’ of precipitation). This study suggests that researchers need to be cautious in separating the signals of precipitation and hydrological processes when interpreting isotope records preserved in tree-ring cellulose archives from the Tibetan Plateau.","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":"58 1","pages":"229 - 246"},"PeriodicalIF":1.3,"publicationDate":"2022-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41724333","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
Measurement of age-dependent radiation ingestion doses due to gross alpha and gross beta exposure from medicinal plants. 测量药用植物总α和总β照射引起的随年龄变化的辐射摄入剂量。
IF 1.3 4区 环境科学与生态学
Isotopes in Environmental and Health Studies Pub Date : 2022-05-01 Epub Date: 2022-02-08 DOI: 10.1080/10256016.2022.2032691
Muhammad Rafique, Chand Shahzadi, Abdul Jabbar, Mumtaz Khan, Saeed Ur Rahman, Syed Shujahat Hussain Bukhari, Shahab Ahmed Abbasi, Nasar Ahmed
{"title":"Measurement of age-dependent radiation ingestion doses due to gross alpha and gross beta exposure from medicinal plants.","authors":"Muhammad Rafique,&nbsp;Chand Shahzadi,&nbsp;Abdul Jabbar,&nbsp;Mumtaz Khan,&nbsp;Saeed Ur Rahman,&nbsp;Syed Shujahat Hussain Bukhari,&nbsp;Shahab Ahmed Abbasi,&nbsp;Nasar Ahmed","doi":"10.1080/10256016.2022.2032691","DOIUrl":"https://doi.org/10.1080/10256016.2022.2032691","url":null,"abstract":"<p><p>This article presents the results of a study conducted to measure the gross alpha, gross beta activities in medicinal plant samples collected from different districts of Azad Kashmir, Pakistan. The ASC-950-DP gasless high-speed counter was used for the measurement of gross <i>α</i>/<i>β</i> activities. Measured activities have been used to assess age-dependent annual effective doses for infants, one-, five-, ten-, and fifteen-year-old and adult people. For a medicinal plant consumption rate (MPCR) of 1.8 kg a<sup>-1</sup>, the average gross alpha and beta annual committed effective dose (ACED) delivered to one-, five-, ten-, fifteen-year-olds and adults fall below the WHO recommended level (290 <i>µ</i>Sv a<sup>-1</sup>) and that reported in the UNSCEAR 2000 (0.3 mSv a<sup>-1</sup>) report. Results obtained for the current study show that the radiological hazard related to the consumption of natural radionuclides in medicinal plants is inconsequential with exception of the ACED delivered to infants at an MPCR of 1.8 g a<sup>-1</sup> and higher values.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":"58 2","pages":"214-227"},"PeriodicalIF":1.3,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39900488","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
Stable hydrogen and oxygen isotope abundance of major bottled water brands sold in the United Kingdom. 在英国销售的主要瓶装水品牌氢、氧同位素丰度稳定。
IF 1.3 4区 环境科学与生态学
Isotopes in Environmental and Health Studies Pub Date : 2022-05-01 Epub Date: 2021-12-16 DOI: 10.1080/10256016.2021.2005041
Vasile Ersek, Jamie Sharples, William Thomas
{"title":"Stable hydrogen and oxygen isotope abundance of major bottled water brands sold in the United Kingdom.","authors":"Vasile Ersek,&nbsp;Jamie Sharples,&nbsp;William Thomas","doi":"10.1080/10256016.2021.2005041","DOIUrl":"https://doi.org/10.1080/10256016.2021.2005041","url":null,"abstract":"<p><p>Bottled water in the UK has a ∼20 % share of the soft drinks market with a sales value of >£1.5 billion. Bottled water is susceptible to fraud and it is important to characterise the chemical signature of aquifers used by the bottled water industry. Measuring <sup>18</sup>O/<sup>16</sup>O and <sup>2</sup>H/<sup>1</sup>H ratios in bottled water is one important step in fraud prevention and aquifer characterisation as these ratios in groundwater tend to be stable or change very slowly through time. Here we characterise the isotopic signature of 30 brands of bottled water sold in the UK. The average <i>δ</i><sup>18</sup>O of bottled waters is -7.4 and -48.4 for <i>δ</i><sup>2</sup>H. This isotopic composition is closely related to that of the annual rainfall and follows latitudinal and longitudinal gradients which combine to explain 77 % of the <i>δ</i><sup>18</sup>O variance.</p>","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":"58 2","pages":"113-120"},"PeriodicalIF":1.3,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39732438","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
Quantifying the contribution of evaporation from Lake Taihu to precipitation with an isotope-based method 用同位素法量化太湖蒸发量对降水的贡献
IF 1.3 4区 环境科学与生态学
Isotopes in Environmental and Health Studies Pub Date : 2022-04-05 DOI: 10.1080/10256016.2022.2056599
Yongbo Hu, W. Xiao, Jingyuan Wang, L. Welp, Chengyu Xie, H. Chu, Xuhui Lee
{"title":"Quantifying the contribution of evaporation from Lake Taihu to precipitation with an isotope-based method","authors":"Yongbo Hu, W. Xiao, Jingyuan Wang, L. Welp, Chengyu Xie, H. Chu, Xuhui Lee","doi":"10.1080/10256016.2022.2056599","DOIUrl":"https://doi.org/10.1080/10256016.2022.2056599","url":null,"abstract":"ABSTRACT Moisture recycling plays a crucial role in regional hydrological budgets. The isotopic composition of precipitation has long been considered as a good tracer to investigate moisture recycling. This study quantifies the moisture recycling fractions (f r) in the Lake Taihu region using spatial variations of deuterium excess in precipitation (d P) and surface water vapour flux (d E). Results show that d P at a site downwind of the lake was higher than that at an upwind site, indicating the influence of lake moisture recycling. Spatial variations in d P after sub-cloud evaporation corrections were 2.3, 1.4 and 3.2 ‰, and d E values were 27.4, 32.3 and 31.4 ‰ for the first winter monsoon, the summer monsoon and the second winter monsoon, respectively. Moisture recycling fractions were 0.48 ± 0.13, 0.07 ± 0.03 and 0.38 ± 0.05 for the three monsoon periods, respectively. Both using the lake parameterization kinetic fractionation factors or neglecting sub-cloud evaporation would decrease f r, and the former has a larger influence on the f r calculation. The larger f r in the winter monsoon periods was mainly caused by lower specific humidity of airmasses but comparable moisture uptake along their trajectories compared to the summer monsoon period.","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":"58 1","pages":"258 - 276"},"PeriodicalIF":1.3,"publicationDate":"2022-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45189200","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
Characteristics of Picea neoveitchii tree growth in mountain areas of central China: insights from isotopic compositions and satellite-derived indices 华中山区新云杉生长特征的同位素组成和卫星指数研究
IF 1.3 4区 环境科学与生态学
Isotopes in Environmental and Health Studies Pub Date : 2022-03-04 DOI: 10.1080/10256016.2022.2047961
Maochang Liang, Fu-fei Gong, Tao Jin, Bing-kun Sun, Yujie Yang, Die Hu, Y. Fei
{"title":"Characteristics of Picea neoveitchii tree growth in mountain areas of central China: insights from isotopic compositions and satellite-derived indices","authors":"Maochang Liang, Fu-fei Gong, Tao Jin, Bing-kun Sun, Yujie Yang, Die Hu, Y. Fei","doi":"10.1080/10256016.2022.2047961","DOIUrl":"https://doi.org/10.1080/10256016.2022.2047961","url":null,"abstract":"ABSTRACT Leaf nitrogen (N) status and stable isotope ratios of carbon (δ 13C) and nitrogen (δ 15N) were used to study environmental factors that control mountain individuals of Picea neoveitchii trees, a coniferous species endemic and endangered in China. From May to September 2016, we carried out observations at four different altitude locations extending southeast of Daba Mountain in western Hubei Province. Needle-shaped leaf δ 13C was positively correlated with needle N and C content calculated from the needle area (Narea and Carea content), needle δ 15N, needle mass, and leaf mass per area (LMA), respectively. Needle δ 15N was also positively correlated with monthly temperature and precipitation for the current month and last month. The seasonal normalised difference vegetation index (NDVI) was highest in June at the lowest altitude and August at the highest altitude. We found that N availability as an important driving factor for tree growth is controlled by surface soil temperature, while in summer, air temperatures above 23 °C exceed the physiological threshold of trees and limit the growth of trees. We concluded that the negative effect of higher temperature on tree growth is greater than the positive effect of higher nitrogen.","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":"58 1","pages":"121 - 140"},"PeriodicalIF":1.3,"publicationDate":"2022-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46267063","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
Decentralised ventilation efficiency for indoor radon reduction considering different environmental parameters 考虑不同环境参数的室内降氡分散通风效率
IF 1.3 4区 环境科学与生态学
Isotopes in Environmental and Health Studies Pub Date : 2022-03-04 DOI: 10.1080/10256016.2022.2047960
Diana Altendorf, Hannes Grünewald, Tze-Li Liu, Jörg Dehnert, R. Trabitzsch, H. Weiss
{"title":"Decentralised ventilation efficiency for indoor radon reduction considering different environmental parameters","authors":"Diana Altendorf, Hannes Grünewald, Tze-Li Liu, Jörg Dehnert, R. Trabitzsch, H. Weiss","doi":"10.1080/10256016.2022.2047960","DOIUrl":"https://doi.org/10.1080/10256016.2022.2047960","url":null,"abstract":"ABSTRACT\u0000 Radon-222 contributes to half of the natural radiation exposure of humans and is one of the main causes of lung cancer. Of particular importance for humans is the exposure to radon-222 indoors, which enters living and working areas from the soil air, e.g. through cracks in the foundations of buildings. An easy and efficient way to minimise indoor radon in dwellings can be achieved through ventilation. How meteorological parameters and the geological background can influence ventilation efficiency in reducing indoor radon has not yet been fully investigated. Therefore, a decentralised ventilation system was installed in an unoccupied flat located in a former uranium mining region to analyse the effect of already existing ventilation modes on indoor radon activity concentration. It is aimed to assess 22 different ventilation experiments that were performed within the time period of one year. Even with a strong seasonal trend with significantly lower indoor radon activity concentrations in summer compared to winter, the decentralised ventilation system was able to reduce indoor radon by up to 83 %. Thereby, strong dependencies on the experimental parameters such as ventilation type or performance level of the fans were found.","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":"58 1","pages":"195 - 213"},"PeriodicalIF":1.3,"publicationDate":"2022-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42426500","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: 5
New method for simultaneous determination of dissolved organic carbon and its stable carbon isotope ratio in liquid samples: environmental applications 同时测定液体样品中溶解有机碳及其稳定碳同位素比的新方法:环境应用
IF 1.3 4区 环境科学与生态学
Isotopes in Environmental and Health Studies Pub Date : 2022-03-04 DOI: 10.1080/10256016.2022.2047040
F. Rampazzo, Malgorzata M. Formalewicz, Umberto Traldi, Seta Noventa, C. Gion, Maria de Castro, Chris R Brodie, Francesca Tiozzo, N. Calace, D. Berto
{"title":"New method for simultaneous determination of dissolved organic carbon and its stable carbon isotope ratio in liquid samples: environmental applications","authors":"F. Rampazzo, Malgorzata M. Formalewicz, Umberto Traldi, Seta Noventa, C. Gion, Maria de Castro, Chris R Brodie, Francesca Tiozzo, N. Calace, D. Berto","doi":"10.1080/10256016.2022.2047040","DOIUrl":"https://doi.org/10.1080/10256016.2022.2047040","url":null,"abstract":"ABSTRACT This study reports the development of an all-in-one elemental analyser isotope ratio mass spectrometry (EA-IRMS) system modified for simultaneous analysis of dissolved organic carbon (DOC) concentration and its stable carbon isotope footprint (δ 13CDOC) in aqueous samples. The method involves a quantitative oxidation of DOC in a 200 µL liquid sample to CO2, after sample acidification and stripping by nitrogen. The detection limit of the method for DOC quantification was 0.2 mg C/L with an analytical precision of 12 %. Uncertainty of stable isotope determinations was 2 % at 0.2 mg DOC/L, while decreasing to 0.3 % at 20 mg DOC/L. Quantitative oxidation of DOC in aqueous samples was validated by using ring test water samples and Deep Sea reference seawater. The method performances of isotope analysis were evaluated by analysing different isotopic standard solutions. The applicability of the method was tested through the analysis of different environmental types of water, showing that δ 13CDOC ranged from – 23.30 to –31.85 ‰, allowing to characterize samples of different environmental origin. The developed method offers several advantages including rapidity, use of small sample volumes and minimal sample pre-treatment, making it a valuable tool for routine DOC concentration measurements paired with isotopic characterization.","PeriodicalId":14597,"journal":{"name":"Isotopes in Environmental and Health Studies","volume":"58 1","pages":"141 - 158"},"PeriodicalIF":1.3,"publicationDate":"2022-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41712084","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
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