首页 > 最新文献

Journal of Trace and Microprobe Techniques最新文献

英文 中文
Portable systems for energy dispersive X-ray fluorescence analysis of works of art 用于艺术品能量色散x射线荧光分析的便携式系统
Pub Date : 2008-07-29 DOI: 10.1039/9781847558640-00206
R. Cesareo, G. Gigante, A. Castellano, M. A. Rosales, M. Aliphat, F. D. L. Fuente, J. Meitin, A. Mendoza, J. Iwanczyk, J. Pantazis
Energy-dispersive X-ray fluorescence (EDXRF) analysis is a valuable technique for the study of works of art, because it is non-destructive, multi-elemental, simple and relatively inexpensive. Further, portable EDXRF equipment (PXRF) can be easily assembled and employed in museums, churches, excavati...
能量色散x射线荧光(EDXRF)分析具有无损、多元素、简单和相对便宜等优点,是研究艺术品的一种有价值的技术。此外,便携式EDXRF设备(PXRF)可以很容易地组装和使用在博物馆,教堂,挖掘…
{"title":"Portable systems for energy dispersive X-ray fluorescence analysis of works of art","authors":"R. Cesareo, G. Gigante, A. Castellano, M. A. Rosales, M. Aliphat, F. D. L. Fuente, J. Meitin, A. Mendoza, J. Iwanczyk, J. Pantazis","doi":"10.1039/9781847558640-00206","DOIUrl":"https://doi.org/10.1039/9781847558640-00206","url":null,"abstract":"Energy-dispersive X-ray fluorescence (EDXRF) analysis is a valuable technique for the study of works of art, because it is non-destructive, multi-elemental, simple and relatively inexpensive. Further, portable EDXRF equipment (PXRF) can be easily assembled and employed in museums, churches, excavati...","PeriodicalId":17525,"journal":{"name":"Journal of Trace and Microprobe Techniques","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74787033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 39
Interaction of Spectral Probe with Biomacromolecule: Safranin T-Nucleic Acid Assembly 光谱探针与生物大分子的相互作用:红花素t -核酸组装
Pub Date : 2003-01-02 DOI: 10.1081/TMA-120025813
Hongwen Gao, Jianfu Zhao
Abstract The microsurface–spectral correction (MSASC) technique has been described and applied to study the assembly of safranin T on nucleic acids at pH 2.21. The formation of the electrostatic film in nucleic acids causes the aggregation of small molecules and the aggregation obeys the Langmuir isothermal adsorption. The characterization of the assembly complexes was made. Results have showed that the maximal assembly number of ST is 1.62 on each phosphate in deoxyribonucleic acid and 0.84 on each phosphate in ribonucleic acid and the binding constants of the complexes are K DNA-P-ST = 2.11 × 104 and K RNA-P-ST = 1.41 × 104 L mol−1. This aggregation was applied to the quantitative detection of nucleic acids in samples with satisfactory results.
摘要采用微表面光谱校正(MSASC)技术研究了pH为2.21时藏红花苷T在核酸上的组装。核酸中静电膜的形成使小分子聚集,聚集服从朗缪尔等温吸附。对组装配合物进行了表征。结果表明,DNA-P-ST在脱氧核糖核酸每个磷酸基上的最大组装数为1.62,在核糖核酸每个磷酸基上的最大组装数为0.84,配合物的结合常数为K DNA-P-ST = 2.11 × 104和K RNA-P-ST = 1.41 × 104 L mol−1。该聚合体应用于样品中核酸的定量检测,结果令人满意。
{"title":"Interaction of Spectral Probe with Biomacromolecule: Safranin T-Nucleic Acid Assembly","authors":"Hongwen Gao, Jianfu Zhao","doi":"10.1081/TMA-120025813","DOIUrl":"https://doi.org/10.1081/TMA-120025813","url":null,"abstract":"Abstract The microsurface–spectral correction (MSASC) technique has been described and applied to study the assembly of safranin T on nucleic acids at pH 2.21. The formation of the electrostatic film in nucleic acids causes the aggregation of small molecules and the aggregation obeys the Langmuir isothermal adsorption. The characterization of the assembly complexes was made. Results have showed that the maximal assembly number of ST is 1.62 on each phosphate in deoxyribonucleic acid and 0.84 on each phosphate in ribonucleic acid and the binding constants of the complexes are K DNA-P-ST = 2.11 × 104 and K RNA-P-ST = 1.41 × 104 L mol−1. This aggregation was applied to the quantitative detection of nucleic acids in samples with satisfactory results.","PeriodicalId":17525,"journal":{"name":"Journal of Trace and Microprobe Techniques","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2003-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79451759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Intercomparison Between Neutron Activation Analysis Laboratories for Trace Elements Determination in Lacustrine Sediments 湖泊沉积物中微量元素中子活化分析实验室的比较
Pub Date : 2003-01-02 DOI: 10.1081/TMA-120025817
Lucretia C. Dinescu, O. Culicov, O. Duliu, M. Frontasyeva, C. Oprea
Abstract An intercomparison concerning the concentrations of 23 major and trace elements in recent lacustrine sediments, as determined by Instrumental Neutron Activation Analysis, has been performed by using epithermal neutrons at the Joint institute of Nuclear Research, Dubna, (Russia) and thermal neutrons at the National Institute for Physics and Nuclear Engineering, Bucharest, (Romania). Sc, La, Tb, Yb, Th, Na, Rb, Cs, Ba, As, Sb, Hf, Cr, Fe, Co, and Zn concentrations agreed within one standard deviation, Ce, Sm, Lu, Ca, Br, and Ta concentrations agreed within two standard deviation. The results were interpreted in the framework of the Upper Continental Crust model. The Factor Analysis has shown that all elements form a single cluster, irrespective of the laboratory where the analysis was performed.
用仪器中子活化分析方法,用俄罗斯杜布纳联合核研究所的超热中子和罗马尼亚布加勒斯特国家物理与核工程研究所的热中子测定了湖泊沉积物中23种主要元素和微量元素的浓度。Sc、La、Tb、Yb、Th、Na、Rb、Cs、Ba、As、Sb、Hf、Cr、Fe、Co和Zn浓度在一个标准差内一致,Ce、Sm、Lu、Ca、Br和Ta浓度在两个标准差内一致。结果在上大陆地壳模型的框架内进行了解释。因子分析表明,无论在哪个实验室进行分析,所有元素都形成一个单一的簇。
{"title":"Intercomparison Between Neutron Activation Analysis Laboratories for Trace Elements Determination in Lacustrine Sediments","authors":"Lucretia C. Dinescu, O. Culicov, O. Duliu, M. Frontasyeva, C. Oprea","doi":"10.1081/TMA-120025817","DOIUrl":"https://doi.org/10.1081/TMA-120025817","url":null,"abstract":"Abstract An intercomparison concerning the concentrations of 23 major and trace elements in recent lacustrine sediments, as determined by Instrumental Neutron Activation Analysis, has been performed by using epithermal neutrons at the Joint institute of Nuclear Research, Dubna, (Russia) and thermal neutrons at the National Institute for Physics and Nuclear Engineering, Bucharest, (Romania). Sc, La, Tb, Yb, Th, Na, Rb, Cs, Ba, As, Sb, Hf, Cr, Fe, Co, and Zn concentrations agreed within one standard deviation, Ce, Sm, Lu, Ca, Br, and Ta concentrations agreed within two standard deviation. The results were interpreted in the framework of the Upper Continental Crust model. The Factor Analysis has shown that all elements form a single cluster, irrespective of the laboratory where the analysis was performed.","PeriodicalId":17525,"journal":{"name":"Journal of Trace and Microprobe Techniques","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2003-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84316829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Compositional Classification of Archaeological Pottery Based on INAA and SEM-EDX 基于INAA和SEM-EDX的考古陶器成分分类
Pub Date : 2003-01-02 DOI: 10.1081/TMA-120025818
R. Álvarez, P. van Espen, Rita Rosa Plá, E. M. Montoya Rossi, Roger Arrazcaeta Delgado, Pedro Pablo Godo Torres, Miriam Celaya González
Abstract The suitability of combining Instrumental Neutron Activation Analysis (INAA) and Electron Probe X-ray Microanalysis (SEM-EDX) for the classification of archaeological pottery based on their composition is illustrated with two examples of different nature and complexity: the study of Cuban aborigine pottery production and distribution and the classification of Majolica from the colonial period. The different scope and features of both techniques complement each other in achieving a more consistent and complete characterization of the composition and structure of the ceramic paste.
摘要通过对古巴土著陶器生产和分布的研究和殖民时期马约利卡陶器的分类这两个不同性质和复杂程度的例子,说明了仪器中子活化分析(INAA)和电子探针x射线微分析(SEM-EDX)结合在考古陶器成分分类中的适用性。两种技术的不同范围和特征相互补充,以实现对陶瓷浆料的组成和结构的更一致和完整的表征。
{"title":"Compositional Classification of Archaeological Pottery Based on INAA and SEM-EDX","authors":"R. Álvarez, P. van Espen, Rita Rosa Plá, E. M. Montoya Rossi, Roger Arrazcaeta Delgado, Pedro Pablo Godo Torres, Miriam Celaya González","doi":"10.1081/TMA-120025818","DOIUrl":"https://doi.org/10.1081/TMA-120025818","url":null,"abstract":"Abstract The suitability of combining Instrumental Neutron Activation Analysis (INAA) and Electron Probe X-ray Microanalysis (SEM-EDX) for the classification of archaeological pottery based on their composition is illustrated with two examples of different nature and complexity: the study of Cuban aborigine pottery production and distribution and the classification of Majolica from the colonial period. The different scope and features of both techniques complement each other in achieving a more consistent and complete characterization of the composition and structure of the ceramic paste.","PeriodicalId":17525,"journal":{"name":"Journal of Trace and Microprobe Techniques","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2003-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79931745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Determination of Ore Concentrates by Energy Dispersive X-Ray Fluorescence Spectrometry 能量色散x射线荧光光谱法测定矿石
Pub Date : 2003-01-02 DOI: 10.1081/TMA-120017892
R. Polat, A. Gürol, N. Ekinci, Celal Çak|r, A. Baştuğ, G. Budak, A. Karabulut
Abstract EDXRF analysis has broad applications in the quantitative analysis of major and minor elements in geological, geochemical, and environmental studies, including the fields of sedimentology, stratigrapy, geochemistry, and mineral exploration. Evaluation of its potential for the analysis of major and minor elements in Bozalt and Dedemaksut ores were performed. Physical basis of used standard addition method, experimental set-up, the procedure of sample preparation and the results of analysis were presented. The correlation coefficients for each of elements analyzed (r greater than 0.986) were achieved.
摘要EDXRF分析在沉积学、地层学、地球化学、矿产勘探等地质、地球化学、环境等研究领域的主微量元素定量分析中有着广泛的应用。评价了该方法在分析Bozalt和Dedemaksut矿石中主要元素和次要元素方面的潜力。介绍了标准加入法的物理基础、实验装置、制样步骤和分析结果。各分析要素的相关系数均大于0.986。
{"title":"Determination of Ore Concentrates by Energy Dispersive X-Ray Fluorescence Spectrometry","authors":"R. Polat, A. Gürol, N. Ekinci, Celal Çak|r, A. Baştuğ, G. Budak, A. Karabulut","doi":"10.1081/TMA-120017892","DOIUrl":"https://doi.org/10.1081/TMA-120017892","url":null,"abstract":"Abstract EDXRF analysis has broad applications in the quantitative analysis of major and minor elements in geological, geochemical, and environmental studies, including the fields of sedimentology, stratigrapy, geochemistry, and mineral exploration. Evaluation of its potential for the analysis of major and minor elements in Bozalt and Dedemaksut ores were performed. Physical basis of used standard addition method, experimental set-up, the procedure of sample preparation and the results of analysis were presented. The correlation coefficients for each of elements analyzed (r greater than 0.986) were achieved.","PeriodicalId":17525,"journal":{"name":"Journal of Trace and Microprobe Techniques","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2003-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82499980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Multidisciplinary Environmental Monitoring at the Kunsthistorisches Museum, Vienna 维也纳艺术史博物馆多学科环境监测
Pub Date : 2003-01-02 DOI: 10.1081/TMA-120020262
G. Sturaro, Dario Camuffo, P. Brimblecombe, R. Grieken, H. Busse, A. Bernardi, A. Valentino, N. Blades, K. Gysels, F. Deutsch, M. Wieser, Sandra Buczolits
Abstract Two multidisciplinary field surveys, one in winter and the other in summer, have monitored the indoor microclimate, the air pollution, the deposition and origin of the suspended particulate matter and the microorganisms of the Kunsthistorisches Museum, Vienna. These surveys were part of a European project aimed at identifying potential environmental risks for conservation in museums. Experimental methodologies were refined within this study. The project underscores pros and cons of the heating ventilating and air conditioning system, proposing a more effective filtration, since the system seemed to worsen indoor pollution. The impact of mass tourism during a special exhibition was investigated, showing that even a good ventilation is unable to deal with the heat and moisture released by huge crowds. The sources of gaseous and particulate pollution were discussed. Microbiological investigations identified a considerable load of bacteria. The cleaning of paintings by brush is shown to resuspend a considerable amount of particles, which are free to deposit again on the paintings.
摘要:在冬季和夏季对维也纳艺术史博物馆室内小气候、空气污染、悬浮颗粒物的沉积和来源以及微生物进行了两次多学科实地调查。这些调查是一个欧洲项目的一部分,旨在确定博物馆保护的潜在环境风险。本研究改进了实验方法。该项目强调了采暖通风和空调系统的利弊,提出了一种更有效的过滤系统,因为该系统似乎加剧了室内污染。在一个特别展览期间,大众旅游的影响进行了调查,结果表明,即使是良好的通风也无法应对大量人群释放的热量和水分。讨论了气体和颗粒物的污染源。微生物学调查发现了大量细菌。用刷子清洁画作可以重新悬浮相当数量的颗粒,这些颗粒可以自由地再次沉积在画作上。
{"title":"Multidisciplinary Environmental Monitoring at the Kunsthistorisches Museum, Vienna","authors":"G. Sturaro, Dario Camuffo, P. Brimblecombe, R. Grieken, H. Busse, A. Bernardi, A. Valentino, N. Blades, K. Gysels, F. Deutsch, M. Wieser, Sandra Buczolits","doi":"10.1081/TMA-120020262","DOIUrl":"https://doi.org/10.1081/TMA-120020262","url":null,"abstract":"Abstract Two multidisciplinary field surveys, one in winter and the other in summer, have monitored the indoor microclimate, the air pollution, the deposition and origin of the suspended particulate matter and the microorganisms of the Kunsthistorisches Museum, Vienna. These surveys were part of a European project aimed at identifying potential environmental risks for conservation in museums. Experimental methodologies were refined within this study. The project underscores pros and cons of the heating ventilating and air conditioning system, proposing a more effective filtration, since the system seemed to worsen indoor pollution. The impact of mass tourism during a special exhibition was investigated, showing that even a good ventilation is unable to deal with the heat and moisture released by huge crowds. The sources of gaseous and particulate pollution were discussed. Microbiological investigations identified a considerable load of bacteria. The cleaning of paintings by brush is shown to resuspend a considerable amount of particles, which are free to deposit again on the paintings.","PeriodicalId":17525,"journal":{"name":"Journal of Trace and Microprobe Techniques","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2003-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89467965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 16
Synchrotron Radiation X-Ray Fluorescence Analysis (SRXRF) for Measuring the Multielement Composition of Samples of Biogenic Nature 同步辐射x射线荧光分析(SRXRF)用于测定生物源性样品的多元素组成
Pub Date : 2003-01-02 DOI: 10.1081/TMA-120020265
K. P. Koutzenogii, T. I. Savchenko, O. Chankina, G. A. Koval’skaya, L. Osipova, A. V. Bgatov
Abstract The results of the use of synchrotron radiation X-ray fluorescence (SRXRF) are demonstrated for simultaneous determination of the multielement composition of human blood, hair and placenta, animal hair, bony and muscular tissues, gallstones and some objects of a food chain (berries, iceland moss, cedar kernels, honey). Concentrations of the following elements were determined: K, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, As, Se, Br, Rb, Sr, Y, Zr, Nb, Mo, Hg, Pb, Bi, Th, U. The technique for preparing biological samples has been developed for determining the element composition by the SRXRF method. The peculiarities of determination of the multielement composition of thin and in form of tablets samples are analyzed. It is shown that SRXRF is fairly informative for estimating the specific features of the multielement composition of biosubstrates.
用同步辐射x射线荧光(SRXRF)同时测定人体血液、毛发和胎盘、动物毛发、骨骼和肌肉组织、胆结石和一些食物链上的物体(浆果、冰岛苔藓、雪松仁、蜂蜜)的多元素组成。测定了以下元素的浓度:K、Ca、Ti、V、Cr、Mn、Fe、Co、Ni、Cu、Zn、Ga、Ge、As、Se、Br、Rb、Sr、Y、Zr、Nb、Mo、Hg、Pb、Bi、Th、u。分析了薄片状和片状样品多元素组成测定的特点。结果表明,SRXRF对于估计生物底物多元素组成的具体特征具有相当的信息量。
{"title":"Synchrotron Radiation X-Ray Fluorescence Analysis (SRXRF) for Measuring the Multielement Composition of Samples of Biogenic Nature","authors":"K. P. Koutzenogii, T. I. Savchenko, O. Chankina, G. A. Koval’skaya, L. Osipova, A. V. Bgatov","doi":"10.1081/TMA-120020265","DOIUrl":"https://doi.org/10.1081/TMA-120020265","url":null,"abstract":"Abstract The results of the use of synchrotron radiation X-ray fluorescence (SRXRF) are demonstrated for simultaneous determination of the multielement composition of human blood, hair and placenta, animal hair, bony and muscular tissues, gallstones and some objects of a food chain (berries, iceland moss, cedar kernels, honey). Concentrations of the following elements were determined: K, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, As, Se, Br, Rb, Sr, Y, Zr, Nb, Mo, Hg, Pb, Bi, Th, U. The technique for preparing biological samples has been developed for determining the element composition by the SRXRF method. The peculiarities of determination of the multielement composition of thin and in form of tablets samples are analyzed. It is shown that SRXRF is fairly informative for estimating the specific features of the multielement composition of biosubstrates.","PeriodicalId":17525,"journal":{"name":"Journal of Trace and Microprobe Techniques","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2003-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75423184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 15
Provenance Study of Archaeological Ceramic 考古陶瓷的来源研究
Pub Date : 2003-01-02 DOI: 10.1081/TMA-120025819
C. Munita, R. P. Paiva, M. A. Alves, P. S. D. de Oliveira, E. Momose
Abstract One hundred sixty three ceramic fragment samples from three archaeological sites were analyzed using instrumental neutron activation analysis (INAA) to determine the concentration of 24 chemical elements: As, Ba, Ce, Co, Cr, Cs, Eu, Fe, Hf, K, La, Lu, Na, Nd, Rb, Sb, Sc, Sm, Ta, Tb, Th, U, Yb, and Zn. Bivariate plots and a multivariate statistical method, discriminant analysis, were performed on the data set. Discriminant analysis identified three compositional grouping and derived two discriminant functions that account for 100% of the variance between groups. The results show, at a confidence level of 98%, that ceramics of each separate site are statistically similar among them and it can be said that a common source of raw material was used independently in each of these sites.
摘要采用仪器中子活化分析(INAA)方法,对3个考古遗址的163个陶瓷碎片样品进行了As、Ba、Ce、Co、Cr、Cs、Eu、Fe、Hf、K、La、Lu、Na、Nd、Rb、Sb、Sc、Sm、Ta、Tb、Th、U、Yb和Zn等24种化学元素的浓度测定。对数据集进行双变量图和多变量统计方法判别分析。判别分析确定了三个组成组,并导出了两个判别函数,这两个判别函数占组间方差的100%。结果表明,在98%的置信水平下,每个单独遗址的陶瓷在统计上是相似的,可以说每个遗址都独立使用了共同的原料来源。
{"title":"Provenance Study of Archaeological Ceramic","authors":"C. Munita, R. P. Paiva, M. A. Alves, P. S. D. de Oliveira, E. Momose","doi":"10.1081/TMA-120025819","DOIUrl":"https://doi.org/10.1081/TMA-120025819","url":null,"abstract":"Abstract One hundred sixty three ceramic fragment samples from three archaeological sites were analyzed using instrumental neutron activation analysis (INAA) to determine the concentration of 24 chemical elements: As, Ba, Ce, Co, Cr, Cs, Eu, Fe, Hf, K, La, Lu, Na, Nd, Rb, Sb, Sc, Sm, Ta, Tb, Th, U, Yb, and Zn. Bivariate plots and a multivariate statistical method, discriminant analysis, were performed on the data set. Discriminant analysis identified three compositional grouping and derived two discriminant functions that account for 100% of the variance between groups. The results show, at a confidence level of 98%, that ceramics of each separate site are statistically similar among them and it can be said that a common source of raw material was used independently in each of these sites.","PeriodicalId":17525,"journal":{"name":"Journal of Trace and Microprobe Techniques","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2003-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73419465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 26
Distinct Adaptivity During Phosphate Uptake by the Cyanobacterium Anabaena variabilis Reflects Information Processing About Preceding Phosphate Supply 变水蓝藻在磷酸盐摄取过程中的独特适应性反映了对先前磷酸盐供应的信息处理
Pub Date : 2003-01-02 DOI: 10.1081/TMA-120020271
R. Falkner, G. Falkner
Abstract Using a phosphate deficient population of the cyanobacterium Anabaena variabilis Kützing the adaptation of the phosphate uptake system to pulsewise increases in the external phosphate concentration has been studied. The following observations have been made: 1. For an adaptation to occur, the external concentration had to be raised to micromolar levels. No adaptation was observed in the nanomolar concentration range. 2. During adaptation the uptake system was transformed within a few minutes from a more active into a less active state in which uptake behavior obeyed a linear flow-force relationship over a wide concentration range. 3. Novel adaptations were influenced in a distinct way by the outcome of previous adaptations. In consequence, adaptive alterations in kinetic and energetic properties of the phosphate uptake system, revealed during pulsewise increases in the external phosphate concentration, depend on the pattern of previous phosphate fluctuations to which the population had been exposed. This succession of adaptive events is interpreted as a primitive form of information processing about the mode of phosphate supply, performed by the growing cells. 4. Information about nutrient fluctuations experienced by the cells of a population was transferred after cell division to daughter cells. This was shown by exposing two reference cultures, originating from the same batch of phosphate deficient cyanobacteria, to the same amount of phosphate in two different supply modes. During subsequent growth these two cultures developed distinct adaptive potentials, which were maintained over several generations, even if they were further cultivated under identical conditions. This distinct adaptive potential affected significantly the phosphate storage capacity of daughter cells.
摘要利用一个缺磷的蓝藻变水藻(Anabaena variabilis k)种群,研究了其磷酸盐吸收系统对外部磷酸盐浓度脉冲增加的适应性。现提出以下意见:为了适应的发生,外部浓度必须提高到微摩尔的水平。在纳摩尔浓度范围内未观察到适应性。2. 在适应过程中,摄取系统在几分钟内从较活跃的状态转变为较不活跃的状态,在较宽的浓度范围内,摄取行为服从线性流-力关系。3.新的改编以一种独特的方式受到先前改编的结果的影响。因此,在外部磷酸盐浓度的脉冲增加过程中显示的磷酸盐摄取系统的动力学和能量特性的适应性改变取决于种群所暴露的先前磷酸盐波动的模式。这种适应性事件的继承被解释为一种关于磷酸盐供应模式的信息处理的原始形式,由生长的细胞执行。4. 一个群体的细胞所经历的营养波动的信息在细胞分裂后传递给子细胞。这是通过将来自同一批缺磷蓝藻的两个参考培养物暴露于两种不同供应模式下相同量的磷酸盐中来证明的。在随后的生长过程中,这两种培养物发展出了不同的适应潜力,即使在相同的条件下进一步培养,这种适应潜力也会保持几代。这种独特的适应潜能显著影响子细胞的磷酸盐储存能力。
{"title":"Distinct Adaptivity During Phosphate Uptake by the Cyanobacterium Anabaena variabilis Reflects Information Processing About Preceding Phosphate Supply","authors":"R. Falkner, G. Falkner","doi":"10.1081/TMA-120020271","DOIUrl":"https://doi.org/10.1081/TMA-120020271","url":null,"abstract":"Abstract Using a phosphate deficient population of the cyanobacterium Anabaena variabilis Kützing the adaptation of the phosphate uptake system to pulsewise increases in the external phosphate concentration has been studied. The following observations have been made: 1. For an adaptation to occur, the external concentration had to be raised to micromolar levels. No adaptation was observed in the nanomolar concentration range. 2. During adaptation the uptake system was transformed within a few minutes from a more active into a less active state in which uptake behavior obeyed a linear flow-force relationship over a wide concentration range. 3. Novel adaptations were influenced in a distinct way by the outcome of previous adaptations. In consequence, adaptive alterations in kinetic and energetic properties of the phosphate uptake system, revealed during pulsewise increases in the external phosphate concentration, depend on the pattern of previous phosphate fluctuations to which the population had been exposed. This succession of adaptive events is interpreted as a primitive form of information processing about the mode of phosphate supply, performed by the growing cells. 4. Information about nutrient fluctuations experienced by the cells of a population was transferred after cell division to daughter cells. This was shown by exposing two reference cultures, originating from the same batch of phosphate deficient cyanobacteria, to the same amount of phosphate in two different supply modes. During subsequent growth these two cultures developed distinct adaptive potentials, which were maintained over several generations, even if they were further cultivated under identical conditions. This distinct adaptive potential affected significantly the phosphate storage capacity of daughter cells.","PeriodicalId":17525,"journal":{"name":"Journal of Trace and Microprobe Techniques","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2003-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84981822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 21
Heavy Metal Concentrations in Surface Soils of Izmit Gulf Region, Turkey 土耳其伊兹米特海湾地区表层土壤重金属浓度
Pub Date : 2003-01-02 DOI: 10.1081/TMA-120023068
F. Yilmaz, Y. Z. Yilmaz, M. Ergin, A. Y. Erkol, A. Muftuoglu, B. Karakelle
Abstract A series of experiments were conducted using the soil surface samples collected from rural, urban and mostly industrial sites in the vicinity of the Gulf of Izmit. Soil samples were digested with the selected acid mixture of HCl-HNO3-HF-H3BO3 in a microwave digestion system. The experiments were aimed at investigating the total metal concentrations of cadmium, cobalt, chromium, copper, iron, manganese, nickel, lead, and zinc. Metal contents in soil samples were detected by flame atomic absorption spectrometry (FAAS). From the results of analysis and comparisons among soil types, it is clearly shown that urban and industrial soils were contaminated more than rural soils. Cd was not detected in any of the soil samples. Pb enrichment in urban and industrial soils might be a result of gasoline combustion. Comparison of obtained average metal concentration levels with the world average ones indicated elevated values for Co, Cu, Mn, Pb, and Zn. The mean concentrations of Co, Cu, Mn, Pb, and Zn were found as 22, 33, 842, 37, and 72 mg kg−1, respectively.
在伊兹米特湾附近的农村、城市和大部分工业场地进行了一系列土壤表面样品的实验。采用选定的盐酸-盐酸- hno3 - hf - h3bo3混合酸,在微波消解系统中对土壤样品进行消解。实验的目的是调查镉、钴、铬、铜、铁、锰、镍、铅和锌的总金属浓度。采用火焰原子吸收光谱法(FAAS)测定土壤样品中的金属含量。从土壤类型的分析比较结果来看,城市和工业土壤的污染程度明显高于农村土壤。土壤样品中未检出镉。城市和工业土壤中铅的富集可能是汽油燃烧的结果。与世界平均水平相比,获得的平均金属浓度水平表明Co, Cu, Mn, Pb和Zn的值升高。Co、Cu、Mn、Pb和Zn的平均浓度分别为22、33、842、37和72 mg kg - 1。
{"title":"Heavy Metal Concentrations in Surface Soils of Izmit Gulf Region, Turkey","authors":"F. Yilmaz, Y. Z. Yilmaz, M. Ergin, A. Y. Erkol, A. Muftuoglu, B. Karakelle","doi":"10.1081/TMA-120023068","DOIUrl":"https://doi.org/10.1081/TMA-120023068","url":null,"abstract":"Abstract A series of experiments were conducted using the soil surface samples collected from rural, urban and mostly industrial sites in the vicinity of the Gulf of Izmit. Soil samples were digested with the selected acid mixture of HCl-HNO3-HF-H3BO3 in a microwave digestion system. The experiments were aimed at investigating the total metal concentrations of cadmium, cobalt, chromium, copper, iron, manganese, nickel, lead, and zinc. Metal contents in soil samples were detected by flame atomic absorption spectrometry (FAAS). From the results of analysis and comparisons among soil types, it is clearly shown that urban and industrial soils were contaminated more than rural soils. Cd was not detected in any of the soil samples. Pb enrichment in urban and industrial soils might be a result of gasoline combustion. Comparison of obtained average metal concentration levels with the world average ones indicated elevated values for Co, Cu, Mn, Pb, and Zn. The mean concentrations of Co, Cu, Mn, Pb, and Zn were found as 22, 33, 842, 37, and 72 mg kg−1, respectively.","PeriodicalId":17525,"journal":{"name":"Journal of Trace and Microprobe Techniques","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2003-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81997252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 15
期刊
Journal of Trace and Microprobe Techniques
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1