Journal of Trace and Microprobe Techniques最新文献_第9页

A STUDY OF COAGULANT PRODUCTION FROM RED MUD AND ITS USE FOR HEAVY METALS REMOVAL 赤泥混凝剂的制备及其在重金属去除中的应用研究

Journal of Trace and Microprobe Techniques Pub Date : 2002-05-20 DOI: 10.1081/TMA-120003726

V. Oreščanin, D. Tibljaš, V. Valković

{"title":"A STUDY OF COAGULANT PRODUCTION FROM RED MUD AND ITS USE FOR HEAVY METALS REMOVAL","authors":"V. Oreščanin, D. Tibljaš, V. Valković","doi":"10.1081/TMA-120003726","DOIUrl":"https://doi.org/10.1081/TMA-120003726","url":null,"abstract":"ABSTRACT Coagulant production using red mud and waste base as raw material is described together with phase and chemical composition changes in red mud during coagulant production and usage. Investigation of phase and chemical composition was carried out using X-ray diffraction analysis (XRD) and sequential extraction. Acid treatment of the red mud resulted in the removal of the exchangeable fraction, carbonates and alkalis. Base addition into acid treated and centrifuged red mud caused its flocculation and sorption by surface enlargement. Mineral phase transition in coagulant (activated red mud) with time was not found. An amount of 1g of this coagulant was able to sorb 99.347 mg of Cu, 95.002 mg of Zn and 98.695 mg of Pb from aqueous solution containing 100 mg/l of those metals. Among three metals investigated, Zn sorption was the most affected with changes in pH value of treated solution. The sorption of metal cations (Cu(II), Zn(II) and Pb(II)) from the metal–EDTA solution onto the activated red mud (ARM) for different metal–EDTA concentrations (1–100 mg/l) was also investigated. It was found that, among the three tested metals, the sorption of Cu onto the ARM was most affected by EDTA. The removal of these three metals from the metal–EDTA mixture solution was also studied by using two other types of coagulants: ferric chloride and polyaluminium chloride (PAC). In the case of the FeCl3, the addition of EDTA had a slight influence on the Cu removal and none on the Pb and Zn removal, while in the case of the PAC, the greatest influence was found for all these metals.","PeriodicalId":17525,"journal":{"name":"Journal of Trace and Microprobe Techniques","volume":"15 1","pages":"233 - 245"},"PeriodicalIF":0.0,"publicationDate":"2002-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87539755","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

LOW IMPURITIES IN SCLEROGLUCAN AQUEOUS SYSTEMS: REMOVAL PROCESSES CONTROL BY TOTAL REFLECTION X-RAY FLUORESCENCE ANALYSIS 硬葡聚糖水体系中的低杂质:用全反射x射线荧光分析控制去除过程

Journal of Trace and Microprobe Techniques Pub Date : 2002-05-20 DOI: 10.1081/TMA-120003730

S. Boeykens, N. Temprano, C. Vázquez

引用次数: 7

LIMITATIONS AND PROSPECTS OF BIOLOGICAL ELECTRON PROBE X-RAY MICROANALYSIS 生物电子探针x射线微量分析的局限性与展望

Journal of Trace and Microprobe Techniques Pub Date : 2002-05-20 DOI: 10.1081/TMA-120003723

K. Zierold

{"title":"LIMITATIONS AND PROSPECTS OF BIOLOGICAL ELECTRON PROBE X-RAY MICROANALYSIS","authors":"K. Zierold","doi":"10.1081/TMA-120003723","DOIUrl":"https://doi.org/10.1081/TMA-120003723","url":null,"abstract":"ABSTRACT Analytical electron microscopy is used to identify, localize and quantify chemical elements in biological samples with the aim to correlate the element distribution in cells and tissues with the particular functional state. Energy dispersive electron probe X-ray microanalysis of freeze-dried cryosections is considered to be the most efficient technique with respect to spatial analytical resolution and detection limit. The potentialities and limitations of this technique are illustrated by results from 3 current research projects: Element compartmentation in hepatocytes, cytotoxicity of an organotin compound, and calcium movements during osmoregulation of epithelia. At present, the absolute detection limit is 170 atoms in a minimum analytical volume of 30 × 30 × 100 nm3. X-ray microanalysis of cryosections from biological samples is limited by ice crystal growth during cryofixation and by the poor X-ray collection efficiency in most electron microscopes. Therefore, the construction of an analytical electron microscope dedicated to biological X-ray microanalysis is proposed. This microscope features considerably improved X-ray collection efficiency due to an annular X-ray detector. The absolute detection limit is estimated to be less than 10 atoms in a minimal analytical volume of 10 × 10 × 100 nm3 of a cryosection.","PeriodicalId":17525,"journal":{"name":"Journal of Trace and Microprobe Techniques","volume":"40 1","pages":"181 - 196"},"PeriodicalIF":0.0,"publicationDate":"2002-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74940324","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: 10

TRACE ELEMENTS DISTRIBUTION IN SOIL IN AREAS OF LIGNITE POWER PLANTS OF WESTERN MACEDONIA 马其顿西部褐煤电厂地区土壤中微量元素的分布

Journal of Trace and Microprobe Techniques Pub Date : 2002-05-20 DOI: 10.1081/TMA-120003729

L. Tsikritzis, S. Ganatsios, O. Duliu, Costas V. Kavouridis, T. Sawidis

引用次数: 26

DISTRIBUTION OF TRACE ELEMENTS IN THE COASTAL SEA SEDIMENTS: PUNAT BAY IN THE NORTHERN ADRIATIC 沿海海洋沉积物中微量元素的分布:亚得里亚海北部普纳特湾

Journal of Trace and Microprobe Techniques Pub Date : 2002-05-20 DOI: 10.1081/TMA-120003727

V. Oreščanin, N. Mikulić, J. Obhodas, K. Nad, V. Valković

引用次数: 15

SPECTROPHOTOMETRIC STUDIES OF TERNARY COMPLEXES OF VANADYL, MANGANESE, AND IRON WITH o-PHENANTHROLINE AND EOSIN 钒、锰、铁与邻菲罗啉和伊红三元配合物的分光光度研究

Journal of Trace and Microprobe Techniques Pub Date : 2002-05-20 DOI: 10.1081/TMA-120003722

M. A. Rauf, M. Ikram, M. Ahmad

引用次数: 9

ATOMIC ABSORPTION SPECTROMETRIC DETERMINATION OF HEAVY METAL CONTENTS OF SOILS AROUND DIFFERENT HIGHWAYS IN TURKEY AND STATISTICAL INTERPRETATION OF THE DATA 原子吸收光谱法测定土耳其不同高速公路周围土壤重金属含量及数据的统计解释

Journal of Trace and Microprobe Techniques Pub Date : 2002-02-28 DOI: 10.1081/TMA-120002466

Ş. Tokalıoğlu, Ş. Kartal

引用次数: 17

INVESTIGATION OF MUTAGENIC EFFECT OF METALS IN THE PLOMIN BAY SEDIMENTS BY MODIFIED PREINCUBATION AMES ASSAY 改良预孵育Ames法研究普洛明湾沉积物中金属的致突变作用

Journal of Trace and Microprobe Techniques Pub Date : 2002-02-28 DOI: 10.1081/TMA-120002461

V. Orešcanin, J. Franekić-Čolić, K. Durgo, V. Valković

引用次数: 17

APPLICATION OF X-RAY FLUORESCENCE TO DETERMINATION OF METALS IN COMMERCIAL TABLETS CONTAINING DIGOXIN x射线荧光法测定地高辛市售片剂中金属含量

Journal of Trace and Microprobe Techniques Pub Date : 2002-02-28 DOI: 10.1081/TMA-120002467

O. Zucchi, V. N. Filho, H. S. Neto

引用次数: 8

SOLID PHASE EXTRACTION OF SOME METAL IONS ON DIAION-20 RESIN PRIOR TO FLAME ATOMIC ABSORPTION SPECTROMETRIC ANALYSIS 火焰原子吸收光谱分析前在diion -20树脂上固相萃取某些金属离子

Journal of Trace and Microprobe Techniques Pub Date : 2002-02-28 DOI: 10.1081/TMA-120002457

F. Armagan, M. Soylak, L. Elçi, M. Doğan

引用次数: 22