Analusis最新文献_第5页

Luminescence methods in pesticide analysis. Applications to the environment 农药分析中的发光方法。环境应用

Analusis Pub Date : 2000-10-01 DOI: 10.1051/ANALUSIS:2000280699

J. Aaron, A. Coly

引用次数: 22

Development of a thermal desorption-gas chromatography-mass spectrometry method for determination of styrene in air. Application to workplace air 热解吸-气相色谱-质谱法测定空气中苯乙烯。工作场所空气的应用

Analusis Pub Date : 2000-10-01 DOI: 10.1051/ANALUSIS:2000144

V. Martín, P. L. Mahía, S. M. Lorenzo, D. P. Rodríguez

引用次数: 8

What’s new in luminescence spectroscopy: applications and recent trends 什么是新的发光光谱:应用和最新趋势

Analusis Pub Date : 2000-10-01 DOI: 10.1051/ANALUSIS:2000280647

J. Aaron

引用次数: 0

Luminescence in organized media and supramolecular interactions:physicochemical aspects and applications 发光在组织介质和超分子相互作用:物理化学方面和应用

Analusis Pub Date : 2000-10-01 DOI: 10.1051/ANALUSIS:2000280649

D. Lerner, M. A. Martín

{"title":"Luminescence in organized media and supramolecular interactions:physicochemical aspects and applications","authors":"D. Lerner, M. A. Martín","doi":"10.1051/ANALUSIS:2000280649","DOIUrl":"https://doi.org/10.1051/ANALUSIS:2000280649","url":null,"abstract":"Natural cyclodextrins are an example of simple organic molecules, which are able to complex many different molecules and especially water-insoluble organic ones. This property caught early the interest of researchers involved in the field of drug delivery and soon new modified cyclodextrins appeared with improved solubility or complexing efficiency. Analytical applications aiming at the determination of fluorescent drugs followed and revealed that not only was their luminescence maintained, but that it was often enhanced. The present review begins with a short introduction devoted to the analysis of the forces involved at the molecular level in the complexing process and to the nature of the various complexes observed. It then focuses on the most typical results obtained in the field of luminescence enhancement following complexation of molecules of biological interest. It is shown that analytical applications always benefit from an improved sensitivity as a result of this enhancement. Extensions of the scope of the technique such as the induced emission of non emitting chromophores (retinoids) as well as the enhancement in micellar solutions are also reviewed.","PeriodicalId":8221,"journal":{"name":"Analusis","volume":"1 1","pages":"649-663"},"PeriodicalIF":0.0,"publicationDate":"2000-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83123022","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

Usefulness of cyclodextrins for detection in molecular fluorescence. Application to xenobiotics and drugs 环糊精在分子荧光检测中的应用。应用于异种生物制剂和药物

Analusis Pub Date : 2000-10-01 DOI: 10.1051/ANALUSIS:2000280664

P. Prognon, A. Kasselouri, M. Desroches, G. Mahuzier

引用次数: 12

Noise identification and sampling frequency determination for precise Pb isotopic measurements by quadrupole-based Inductively Coupled Plasma Mass Spectrometry 四极电感耦合等离子体质谱法精确测量铅同位素的噪声识别和采样频率测定

Analusis Pub Date : 2000-10-01 DOI: 10.1051/ANALUSIS:2000146

F. Monna, J. Loizeau, B. Thomas, C. Guéguen, P. Favarger, R. Losno, J. Dominik

{"title":"Noise identification and sampling frequency determination for precise Pb isotopic measurements by quadrupole-based Inductively Coupled Plasma Mass Spectrometry","authors":"F. Monna, J. Loizeau, B. Thomas, C. Guéguen, P. Favarger, R. Losno, J. Dominik","doi":"10.1051/ANALUSIS:2000146","DOIUrl":"https://doi.org/10.1051/ANALUSIS:2000146","url":null,"abstract":"Analytical precision of the isotope ratios measured by quadrupole-based ICP-MS is drastically controlled by the low- frequency noises which originate from nebulisation and vaporisation processes, and from sample introduction systems. The unde- sirable influence of these latter can be however reduced by choosing efficiently the operating parameters. In the present study , the choice of the stabilisation time necessary in peak jump mode, and the one of the number of sweeps are discussed in the light of noise power spectra obtained with various speeds of the peristaltic pump used as sample introduction system. Obviously, the settings proposed are probably efficient only on our own ICP-MS, but they can be determined without any difficulty on any other equipment, only by following the methodology detailed here. With such guidelines, experimental within-run RSD % were observed following closely those predicted by the counting statistics ( ~ 110 %). The isotopic measurements of natural samples (overbank sediments, airborne particulate matter, lichens and rainwater) exhibited fair accuracy and good reproducibility, making highly con - venient the use of the ICP-MS, at least in an environmental purpose.","PeriodicalId":8221,"journal":{"name":"Analusis","volume":"186 1","pages":"750-757"},"PeriodicalIF":0.0,"publicationDate":"2000-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88101782","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

Room temperature phosphorescence in cyclodextrins. Analytical applications 环糊精的室温磷光。分析应用程序

Analusis Pub Date : 2000-10-01 DOI: 10.1051/ANALUSIS:2000280670

A. M. Peña, M. C. Mahedero, A. Sánchez

引用次数: 16

Capillary electrophoresis with laser-induced fluorescence detection for natively fluorescent analytes 毛细管电泳激光诱导荧光检测天然荧光分析物

Analusis Pub Date : 2000-10-01 DOI: 10.1051/ANALUSIS:2000280679

C. Gooijer, S. Kok, F. Ariese

{"title":"Capillary electrophoresis with laser-induced fluorescence detection for natively fluorescent analytes","authors":"C. Gooijer, S. Kok, F. Ariese","doi":"10.1051/ANALUSIS:2000280679","DOIUrl":"https://doi.org/10.1051/ANALUSIS:2000280679","url":null,"abstract":"Laser-induced fluorescence (LIF) detection systems for capillary electrophoresis (CE) are nowadays widely available. Many classes of analytes show native fluorescence, but often only upon absorption of short-wavelength UV light. Unfortunately, most CE-LIF systems make use of visible laser lines so that they can only be applied to analytes that have been chemically derivatised with a suitable fluorescent label matching the excitation wavelength. This paper illustrates how the applicability of CE-LIF can be broadened to include natively fluorescent analytes by employing either UV laser systems or multiphoton-excitation. Several pulsed and continuous wave (CW) lasers were compared in terms of analytical sensitivity and selectivity; in particular the CW 275-nm line from an adapted Ar + laser proved very suitable. For identification purposes emission spectra were recorded online. The usefulness of such systems in environmental chemistry is shown for amino- and hydroxy-substituted naphthalenesulphonates in river water samples. Extra spectral selectivity can be obtained by performing CE-LIF under flurorescence line-narrowing conditions using a cryogenic interface. The introduction of high-repetition rate, femtosecond Ti:sapphire lasers paved the way for two- and three-photon excited LIF detection of a wide array of biologically relevant fluorophores.","PeriodicalId":8221,"journal":{"name":"Analusis","volume":"85 1","pages":"679-685"},"PeriodicalIF":0.0,"publicationDate":"2000-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80572939","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

Fluorescence techniques for the determination of polycyclic aromatic hydrocarbons in marine environment: an overview 荧光技术测定海洋环境中多环芳烃的研究进展

Analusis Pub Date : 2000-10-01 DOI: 10.1051/ANALUSIS:2000280710

J. J. Rodríguez, C. P. Sanz

引用次数: 36

Use of preconcentration techniques applied to a MS-based Electronic Nose 预浓缩技术在ms电子鼻上的应用

Analusis Pub Date : 2000-10-01 DOI: 10.1051/ANALUSIS:2000145

E. Schaller, S. Zenhäusern, T. Zesiger, J. Bosset, F. Escher

引用次数: 24