Analytical Communications最新文献_第8页

Determination of the palladium content in a solid plastic material by electrothermal vaporization ICP-mass spectrometry (ETV-ICPMS) 电热汽化icp -质谱法测定固体塑料中钯的含量

Analytical Communications Pub Date : 1999-01-01 DOI: 10.1039/A809318K

F. Vanhaecke, Marieke Verstraete, L. Moens, R. Dams

{"title":"Determination of the palladium content in a solid plastic material by electrothermal vaporization ICP-mass spectrometry (ETV-ICPMS)","authors":"F. Vanhaecke, Marieke Verstraete, L. Moens, R. Dams","doi":"10.1039/A809318K","DOIUrl":"https://doi.org/10.1039/A809318K","url":null,"abstract":"Electrothermal vaporization inductively coupled plasma mass spectrometry (ETV-ICPMS) was used for the determination of the Pd content in a solid aliphatic polyketone. The presence of Pd in this material has to be attributed to the use of a Pd-containing homogeneous catalyst for its production. By application of a multi-step heating programme, the organic matrix could be selectively and completely removed prior to the vaporization of the analyte element. The accuracy attainable when using (i) external calibration and (ii) single standard addition using an aqueous standard solution was evaluated by comparison of the results obtained with a reference value obtained by means of neutron activation analysis (NAA). On the basis of its similar furnace behaviour, Ir was shown to be perfectly suited to be used as an internal standard. Also the argon dimer signal (Ar2+) shows some potential to be used as an internal standard. When using Ir or Ar2+ as an internal standard and single standard addition for calibration, the ETV-ICPMS result (∼5 µg g–1) agreed within 10% with the NAA result on each occasion (deviation between average ETV-ICPMS result and reference value ∼2%). The absolute limit of detection (3s-criterion) was observed to be ∼1 pg, corresponding to a relative value of ∼1 ng g–1, taking 1 mg as a typical sample mass. However, when using Ir as an internal standard, it was established that the detection limit deteriorated to ∼20 pg, due to the presence of a measurable amount of Pd in the Ir standard solution.","PeriodicalId":7814,"journal":{"name":"Analytical Communications","volume":"39 1","pages":"89-92"},"PeriodicalIF":0.0,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84294838","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: 17

Influence of functional and cross-linking monomers and the amount of template on the performance of molecularly imprinted polymers in binding assays 功能单体和交联单体及模板量对结合试验中分子印迹聚合物性能的影响

Analytical Communications Pub Date : 1999-01-01 DOI: 10.1039/A901339C

E. Yilmaz, K. Mosbach, K. Haupt

引用次数: 153

Recent developments in the analysis of light isotopes by continuous flow isotope ratio mass spectrometry 连续流同位素比质谱法分析轻同位素的最新进展

Analytical Communications Pub Date : 1999-01-01 DOI: 10.1039/A904908H

A. J. Midwood

引用次数: 8

A polypyrrole-coated, piezoelectric sensor for CrVI. Preliminary results 一种用于CrVI的聚吡咯涂层压电传感器。初步结果

Analytical Communications Pub Date : 1999-01-01 DOI: 10.1039/A809667H

E. Desimoni, I. Bassani

引用次数: 8

Non-destructive real-time reaction monitoring in solid phase synthesis by near-infrared reflectance spectroscopy—esterification of a resin-bound alcohol 用近红外反射光谱法实时监测固相合成中的非破坏性反应-树脂结合醇的酯化反应

Analytical Communications Pub Date : 1999-01-01 DOI: 10.1039/A900747D

Jonathan Hammond, A. Moffat, R. D. Jee, B. Kellam

引用次数: 10

Selective recognition and separation of β-lactam antibiotics using molecularly imprinted polymers 分子印迹聚合物选择性识别和分离β-内酰胺类抗生素

Analytical Communications Pub Date : 1999-01-01 DOI: 10.1039/A905151A

K. Skudar, O. Brüggemann, A. Wittelsberger, O. Ramström

引用次数: 38

A molecularly imprinted polymer for the pesticide bentazone 一种用于农药苯达酮的分子印迹聚合物

Analytical Communications Pub Date : 1999-01-01 DOI: 10.1039/A902968K

C. Baggiani, G. Giraudi, C. Giovannoli, A. Vanni, F. Trotta

引用次数: 58

Novel sorbent extraction technique using a chelating agent impregnated porous PTFE filter tube : Preconcentration of In(III) with a bis(2-ethylhexyl) hydrogen phosphate (HDEHP) loaded porous PTFE filter tube 用络合剂浸渍多孔聚四氟乙烯滤管的新型吸附剂萃取技术:负载双(2-乙基己基)磷酸氢(HDEHP)多孔聚四氟乙烯滤管预富集In(III)

Analytical Communications Pub Date : 1999-01-01 DOI: 10.1039/A902146I

M. Murakami, T. Takada

{"title":"Novel sorbent extraction technique using a chelating agent impregnated porous PTFE filter tube : Preconcentration of In(III) with a bis(2-ethylhexyl) hydrogen phosphate (HDEHP) loaded porous PTFE filter tube","authors":"M. Murakami, T. Takada","doi":"10.1039/A902146I","DOIUrl":"https://doi.org/10.1039/A902146I","url":null,"abstract":"The sorption and elution of In(III) on a porous PTFE filter tube impregnated with bis(2-ethylhexyl) hydrogen phosphate (HDEHP) was studied. A 1 µg portion of In(III) in 1000 ml of sample solution was quantitatively complexed with HDEHP adsorbed onto a porous PTFE filter tube by passing the solution through the micropores of the filter tube. Preconcentrated In(III) was then quantitatively recovered provided that the elution, which consisted of cyclical filtering of 0.1 ml of 4 mol l–1 hydrochloric acid through the filter tube for 1 min, was repeated 3 times. The total volume of the eluent was only 0.3 ml in this case; therefore, over 3300-fold of enrichment was attained within 90 min of total preconcentration time. This method was applicable to the preconcentration of In(III) in highly saline samples. A 2.5 µg portion of In(III) could be quantitatively extracted from 500 ml of synthetic seawater and be recovered into 0.5 ml of 4 mol l–1 hydrochloric acid, with subsequent determination by flame AAS. The average recovery and the RSD of the results were 100% and of 1.4%, respectively (n = 5).","PeriodicalId":7814,"journal":{"name":"Analytical Communications","volume":"44 1","pages":"185-188"},"PeriodicalIF":0.0,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90663705","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

The improved potentiometric pH response of electrodes modified with processible polyaniline. Application to glucose biosensor 可加工聚苯胺修饰电极改善电位pH响应。葡萄糖生物传感器的应用

Analytical Communications Pub Date : 1999-01-01 DOI: 10.1039/A900597H

A. Karyakin, L. V. Lukachova, E. E. Karyakina, A. Orlov, G. P. Karpachova

引用次数: 39

Investigation of imaging X-ray photoelectron spectroscopy for surface analysis of atmospheric particulates 大气微粒表面分析的成像x射线光电子能谱研究

Analytical Communications Pub Date : 1999-01-01 DOI: 10.1039/A809067J

B. Hutton, David E. Williams

引用次数: 4