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Journal of Trace and Microprobe Techniques最新文献

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Separation/Preconcentration of Xylenol Orange Metal Complexes on Amberlite XAD-16 Column for Their Determination by Flame Atomic Absorption Spectrometry Amberlite XAD-16色谱柱分离/富集二甲醇-橙色金属配合物火焰原子吸收光谱法测定
Journal of Trace and Microprobe Techniques Pub Date : 2003-01-02 DOI: 10.1081/TMA-120023062
M. Soylak, Y. Akkaya
{"title":"Separation/Preconcentration of Xylenol Orange Metal Complexes on Amberlite XAD-16 Column for Their Determination by Flame Atomic Absorption Spectrometry","authors":"M. Soylak, Y. Akkaya","doi":"10.1081/TMA-120023062","DOIUrl":"https://doi.org/10.1081/TMA-120023062","url":null,"abstract":"Abstract A separation and preconcentration method is described for the determination of copper, nickel, cobalt, lead, iron and cadmium in natural water and some salt samples by flame AAS. The analyte trace metal ions in the samples were sorbed as xylenol orange complexes on Amberlite XAD-16 column at the pH range of 7–9, and then eluted with 1M HNO3 in acetone. The effect of pH, reagent amount, sample volume, and matrix of the sample on the sorption of metal ions has also been investigated. The concentration of analyte ions detected after separation/and preconcentration was in agreement with the added amount of ions. The present method was found to be applicable to the preconcentration of analyte ions in natural water and some salt samples with good results such as relative standard deviations from 3 to 10% (N = 10).","PeriodicalId":17525,"journal":{"name":"Journal of Trace and Microprobe Techniques","volume":"23 1","pages":"455 - 466"},"PeriodicalIF":0.0,"publicationDate":"2003-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80392931","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: 24
Spectrophotometric Studies of the Complexation of Sudan Red B with Co2+ and Ni2+ Ions 苏丹红B与Co2+和Ni2+离子络合的分光光度研究
Journal of Trace and Microprobe Techniques Pub Date : 2003-01-02 DOI: 10.1081/TMA-120025807
M. A. Rauf, Z. Akhter, S. Kanwal
{"title":"Spectrophotometric Studies of the Complexation of Sudan Red B with Co2+ and Ni2+ Ions","authors":"M. A. Rauf, Z. Akhter, S. Kanwal","doi":"10.1081/TMA-120025807","DOIUrl":"https://doi.org/10.1081/TMA-120025807","url":null,"abstract":"Abstract Sudan Red B, an azo dye, was used as a reagent for the complexation of Ni and Co ions. The studies were carried out spectrophotometrically. The absorption spectra were monitored and the conditions were optimized in terms of dye and metal concentration, pH, and cationic and anionic effects. The log β (stability constants) of the metal–dye complex were calculated using Job's method and these were of the order of 5.5 and 5.6 for Co2+ and Ni2+ complex respectively.","PeriodicalId":17525,"journal":{"name":"Journal of Trace and Microprobe Techniques","volume":"19 1","pages":"577 - 581"},"PeriodicalIF":0.0,"publicationDate":"2003-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86156670","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
SIMS and TM-AFM Studies on Weathered Cu, Zn, and Brass (CuZn10, CuZn30) Surfaces Cu, Zn和黄铜(CuZn10, CuZn30)表面风化的SIMS和TM-AFM研究
Journal of Trace and Microprobe Techniques Pub Date : 2003-01-02 DOI: 10.1081/TMA-120017891
M. Rosner, C. Kleber, M. Schreiner, H. Hutter
{"title":"SIMS and TM-AFM Studies on Weathered Cu, Zn, and Brass (CuZn10, CuZn30) Surfaces","authors":"M. Rosner, C. Kleber, M. Schreiner, H. Hutter","doi":"10.1081/TMA-120017891","DOIUrl":"https://doi.org/10.1081/TMA-120017891","url":null,"abstract":"Abstract Polished samples of Cu, Zn and two brasses (CuZn10 and CuZn30) have been treated in synthetic air with 80% relative humidity (RH) and alternatively with 250 ppb SO2 added to the moist air stream in a weathering box. Depth profiles of the corroded surfaces were made with dynamic-SIMS and the courses of the S- and O-signals were traced. The decay of the S- and the O-signal exhibited different behavior. While the O-signal decreased continuously through the corroded layer, the S-signal decreased much faster until it reached the background level at the half of the thickness of the altered layer. Surface features could be found with comparative TM-AFM-measurements that confirmed these SIMS results. The height of these features (measured with TM-AFM) matched with the determined thickness of the S enriched layer.","PeriodicalId":17525,"journal":{"name":"Journal of Trace and Microprobe Techniques","volume":"20 2 1","pages":"49 - 62"},"PeriodicalIF":0.0,"publicationDate":"2003-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78119292","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
Physicochemical and Analytical Properties of the Complexes of Palladium(II) and Diethazine 钯(II)与二乙烷配合物的理化性质及分析性质
Journal of Trace and Microprobe Techniques Pub Date : 2003-01-02 DOI: 10.1081/TMA-120025808
W. Misiuk, E. Regulska, L. Kuźmicka, H. Puzanowska‐Tarasiewicz
{"title":"Physicochemical and Analytical Properties of the Complexes of Palladium(II) and Diethazine","authors":"W. Misiuk, E. Regulska, L. Kuźmicka, H. Puzanowska‐Tarasiewicz","doi":"10.1081/TMA-120025808","DOIUrl":"https://doi.org/10.1081/TMA-120025808","url":null,"abstract":"Abstract The complexes of palladium(II) with diethazine hydrochloride were obtained. Their composition and some physicochemical properties were studied by UV–vis and infrared measurements. Stoichiometries and instability constants of the prepared complexes were established. Structure of the complexes was elucidated on the basis of analytical results.","PeriodicalId":17525,"journal":{"name":"Journal of Trace and Microprobe Techniques","volume":"1 1","pages":"583 - 592"},"PeriodicalIF":0.0,"publicationDate":"2003-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85602803","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: 3
On-Line Preconcentration/Determination of Lead Traces in Bee Honey by Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) Using a Conical Minicolumn Packed with Activated Carbon 电感耦合等离子体发射光谱法(ICP-OES)在线预富集/测定蜜蜂蜂蜜中的痕量铅
Journal of Trace and Microprobe Techniques Pub Date : 2003-01-02 DOI: 10.1081/TMA-120023059
S. Cerutti, R. F. Orsi, J. Gásquez, R. Olsina, L. Martínez
{"title":"On-Line Preconcentration/Determination of Lead Traces in Bee Honey by Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) Using a Conical Minicolumn Packed with Activated Carbon","authors":"S. Cerutti, R. F. Orsi, J. Gásquez, R. Olsina, L. Martínez","doi":"10.1081/TMA-120023059","DOIUrl":"https://doi.org/10.1081/TMA-120023059","url":null,"abstract":"Abstract In this study, the preconcentration of Pb2+ using a conical minicolumn packed with activated carbon (AC) was studied for preconcentration of Pb2+. The experiments showed that Pb2+ reacts with 8-hydroxyquinoline to form a complex at pH 10.0 and can be retained “on-line” on a conical minicolumn packed with activated carbon, then eluted with 20% (v/v) nitric acid. The conditions for the quantitative and reproducible preconcentration and subsequent ICP-OES determination with ultrasonic nebulization system (USN) were studied. A total enhancement factor (N) of 500 was obtained with respect to ICP-OES using pneumatic nebulization (10 for USN and 50 for enrichment factor) for a sample volume of 25 mL. The detection limit (DL) was 0.04 µg L−1. The relative standard deviation (RSD) were 3.0%. The optimized procedure was successfully applied to the determination of trace levels of Pb+2 in bee honey samples.","PeriodicalId":17525,"journal":{"name":"Journal of Trace and Microprobe Techniques","volume":"23 1","pages":"421 - 432"},"PeriodicalIF":0.0,"publicationDate":"2003-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83979933","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: 13
Solid-Phase Extractions with Freshly Precipitated Metal-Diethyldithiocarbamates and Atomic Absorption Spectrophotometric Determination of Copper 新沉淀金属-二乙基二硫代氨基甲酸酯固相萃取及原子吸收分光光度法测定铜
Journal of Trace and Microprobe Techniques Pub Date : 2003-01-02 DOI: 10.1081/TMA-120025814
H. Cesur
{"title":"Solid-Phase Extractions with Freshly Precipitated Metal-Diethyldithiocarbamates and Atomic Absorption Spectrophotometric Determination of Copper","authors":"H. Cesur","doi":"10.1081/TMA-120025814","DOIUrl":"https://doi.org/10.1081/TMA-120025814","url":null,"abstract":"Abstract Using the freshly precipitated metal diethyl dithiocarbamates Mn(DDTC)2, Zn(DDTC)2, Cd(DDTC)2, Fe(DDTC)3, Co(DDTC)2, Cu(DDTC)2, Ni(DDTC)2, Pb(DDTC)2 and Hg(DDTC)2 as reagents, a new solid phase extraction method (SPE) has been described for the selective extraction of Mn(II), Zn(II), Cd(II), Fe(III), Co(II), Cu(II), Ni(II), Pb(II), and Hg(II) ions in aqueous system. These reagents show excellent selectivity for the extraction of metal ions with higher conditional stability constants (or extraction constants). As an example the application of these reagents has been carried out, where freshly precipitated Ni(DDTC)2 was used for the preconcentration of copper in aqueous system prior to its determination by FAAS.","PeriodicalId":17525,"journal":{"name":"Journal of Trace and Microprobe Techniques","volume":"63 1","pages":"627 - 636"},"PeriodicalIF":0.0,"publicationDate":"2003-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78388674","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: 12
Derivative Spectrophotometry as a Tool for Determination of Stability Constants of Some 4-2(-Pyridylazo)-resorcinol Complexes with Divalent Metal Ions 导数分光光度法测定某些2 -2(-吡啶偶氮)-间苯二酚二价金属配合物的稳定性常数
Journal of Trace and Microprobe Techniques Pub Date : 2003-01-02 DOI: 10.1081/TMA-120023061
J. Karpińska, Edyta Hryniewicka
{"title":"Derivative Spectrophotometry as a Tool for Determination of Stability Constants of Some 4-2(-Pyridylazo)-resorcinol Complexes with Divalent Metal Ions","authors":"J. Karpińska, Edyta Hryniewicka","doi":"10.1081/TMA-120023061","DOIUrl":"https://doi.org/10.1081/TMA-120023061","url":null,"abstract":"Abstract The suitability of derivative spectrophotometry for examination of complexation equilibria was elaborated by the determination of stability constants of Zn-PAR and Pd-PAR complexes. Derivatization minimized the influence of an excess of a colored reagent on the absorbance of the complex and allowed the direct measurement of its true value. The stability constants determined using two different methods were compared with available published data. In the case of the Zn(PAR)2 complex the error of determination did not exceed ± 5%.","PeriodicalId":17525,"journal":{"name":"Journal of Trace and Microprobe Techniques","volume":"21 1","pages":"443 - 453"},"PeriodicalIF":0.0,"publicationDate":"2003-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88843025","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
Investigation of Heavy Metal Levels in Street Dust Samples in Tokat, Turkey 土耳其托卡特街道尘埃样本重金属含量调查
Journal of Trace and Microprobe Techniques Pub Date : 2003-01-02 DOI: 10.1081/TMA-120023067
M. Tüzen
{"title":"Investigation of Heavy Metal Levels in Street Dust Samples in Tokat, Turkey","authors":"M. Tüzen","doi":"10.1081/TMA-120023067","DOIUrl":"https://doi.org/10.1081/TMA-120023067","url":null,"abstract":"Abstract The concentrations of heavy metals in the street dust samples collected from Tokat, Turkey have been determined using flame atomic absorption spectrometry after wet and microwave digestion. Good accuracy was assured by the analysis of standard reference material. Recoveries were nearly quantitative for all elements studied (≥ 95%). The mean concentration levels of Pb, Ni, Cd, Zn, Mn, Cu, Co, and Cr were found to be 149, 65, 3.0, 63, 285, 29, 20, and 30 µg/g, respectively. The concentrations of heavy metals in the samples vary depending on the traffic density.","PeriodicalId":17525,"journal":{"name":"Journal of Trace and Microprobe Techniques","volume":"76 1","pages":"513 - 521"},"PeriodicalIF":0.0,"publicationDate":"2003-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86484682","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: 30
Heavy Metals and Pesticides in Marine Sediment, Seawater, and Seaplants Along the Kenya-Mombasa Coastline 肯尼亚-蒙巴萨海岸线上海洋沉积物、海水和海洋植物中的重金属和农药
Journal of Trace and Microprobe Techniques Pub Date : 2003-01-02 DOI: 10.1081/TMA-120017907
M. Oyugi, S. Chhabra, W. Njue, A. M. Kinyua
{"title":"Heavy Metals and Pesticides in Marine Sediment, Seawater, and Seaplants Along the Kenya-Mombasa Coastline","authors":"M. Oyugi, S. Chhabra, W. Njue, A. M. Kinyua","doi":"10.1081/TMA-120017907","DOIUrl":"https://doi.org/10.1081/TMA-120017907","url":null,"abstract":"Abstract Marine sediment, seawater and several species of seaplants along the Kenya-Mombasa coastal region were analyzed to determine the levels of heavy metals by AAS and EDXRF and organochlorine pesticides (OCPs) by GLC-ECD. In marine sediments, there were high levels of manganese (1100 µg/L) at Vanga, compared to other study sites. In seawater, the heavy metals were detected in levels higher than those considered as natural in the ocean and the range was 0.01–0.30 mg/L. OCPs were detected in marine sediments and in seaplants. The trend of concentration of these pollutants in ascending order in seawater, marine sediment and seaplants was observed.","PeriodicalId":17525,"journal":{"name":"Journal of Trace and Microprobe Techniques","volume":"12 1","pages":"147 - 159"},"PeriodicalIF":0.0,"publicationDate":"2003-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81045645","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: 2
How Sensitive Is CAT to Porosity? CAT对孔隙度有多敏感?
Journal of Trace and Microprobe Techniques Pub Date : 2003-01-02 DOI: 10.1081/TMA-120025812
O. Duliu
{"title":"How Sensitive Is CAT to Porosity?","authors":"O. Duliu","doi":"10.1081/TMA-120025812","DOIUrl":"https://doi.org/10.1081/TMA-120025812","url":null,"abstract":"Abstract Computer Axial Tomography (CAT) maps the distribution of the linear attenuation coefficient (LAC) over a section or over an entire object. LAC represents the product between density and mass attenuation coefficient (MAC). These parameters are influenced in complete different manners by porosity provided that pore sizes are much smaller than voxels: density lineally decreases with porosity while MAC is almost independent of it. Consequently, in the case of single energy tomography, CAT images will be strongly influenced by the porosity. In the case of dual-energy tomography, when it results for the same section two CAT images, one depicting density and the other one the effective atomic number distributions, only the first one will reflect the sample porosity while the second one remains independent of the specimen porosity. This fact could be very useful in investigating complex samples such as rocks or soils.","PeriodicalId":17525,"journal":{"name":"Journal of Trace and Microprobe Techniques","volume":"31 1","pages":"609 - 614"},"PeriodicalIF":0.0,"publicationDate":"2003-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79087624","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: 1
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