A new issue of this journal has just been published. To see abstracts of the papers it contains (with links through to the full papers) click here:
Selected papers from the latest issue:
Recent developments in fluorescent sensors for trace-level determination of toxic-metal ions
26 November 2011, 01:44:35
Publication year: 2011
Source: TrAC Trends in Analytical Chemistry, Available online 25 November 2011
Mili Dutta, Debasis Das
The literature on the use of fluorescent sensors for the trace-level determination of toxic cations is highly significant. Among different analytical methods, fluorescence is the most attractive due to its robustness, high sensitivity, selectivity, rapidity, ease of measurement and non-destructive methodology. Here, we illustrate different fluorescent probes developed for detection and estimation of toxic cations, including their molecular structure, sensing mechanism, analytical figures of merit and their applications. We provide a critical survey of the fluorescent sensors of each toxic element (i.e. Hg, Ag, Cd, Cr, Pb, Tl, Co and Ni). A separate section contains the sensors that can detect several toxic elements simultaneously, so-called multi-element sensors. We briefly describe the merits and the demerits of the methods. Finally, we outline future prospects in this field.
Source: TrAC Trends in Analytical Chemistry, Available online 25 November 2011
Mili Dutta, Debasis Das
The literature on the use of fluorescent sensors for the trace-level determination of toxic cations is highly significant. Among different analytical methods, fluorescence is the most attractive due to its robustness, high sensitivity, selectivity, rapidity, ease of measurement and non-destructive methodology. Here, we illustrate different fluorescent probes developed for detection and estimation of toxic cations, including their molecular structure, sensing mechanism, analytical figures of merit and their applications. We provide a critical survey of the fluorescent sensors of each toxic element (i.e. Hg, Ag, Cd, Cr, Pb, Tl, Co and Ni). A separate section contains the sensors that can detect several toxic elements simultaneously, so-called multi-element sensors. We briefly describe the merits and the demerits of the methods. Finally, we outline future prospects in this field.
Highlights
► Different fluorescent sensors selective for toxic cations have been illustrated. ► Sensors selective for cationsviz.Hg, Ag, Cd, Cr, Pb, Tl, Co and Ni discussed. ► Advantages and limitations of each fluorescent probe have been critically analysed. ► Analytical and biological applications of the sensors have been thoroughly discussed. ► We have confined our discussion on the topic over the literature for last 10 years.A review of sensor-based methods for monitoring hydrogen sulfide
21 November 2011, 00:38:10
Publication year: 2011
Source: TrAC Trends in Analytical Chemistry, Available online 19 November 2011
Sudhir Kumar Pandey, Ki-Hyun Kim, Kea-Tiong Tang
We review sensor-based methods commonly employed for monitoring hydrogen sulfide (H2S), including recent developments in H2S-sensing instrumentation.We evaluate the basic quality-assurance parameters of different sensor types for quantifying H2S in terms of major operational criteria (e.g., response time, limit of detection, common operating range of concentrations, and stability). We also describe the applicability of these sensor-based methods with respect to practicality in various environmental settings. Finally, we highlight the limitations and the future prospects of these sensor-based methods.
Source: TrAC Trends in Analytical Chemistry, Available online 19 November 2011
Sudhir Kumar Pandey, Ki-Hyun Kim, Kea-Tiong Tang
We review sensor-based methods commonly employed for monitoring hydrogen sulfide (H2S), including recent developments in H2S-sensing instrumentation.We evaluate the basic quality-assurance parameters of different sensor types for quantifying H2S in terms of major operational criteria (e.g., response time, limit of detection, common operating range of concentrations, and stability). We also describe the applicability of these sensor-based methods with respect to practicality in various environmental settings. Finally, we highlight the limitations and the future prospects of these sensor-based methods.
Highlights
► In this work, the emerging sensor-based methodologies for H2S analysis are explored. ► The common sensor types are grouped by their material type and/or sensing principle. ► The efficacy of different sensors is evaluated in terms of QA for real world application. ► Discussion is provided with respect to their advantages, limitations, and future prospects.Metabolite identification and quantitation in LC-MS/MS-based metabolomics
21 November 2011, 00:38:10
Publication year: 2011
Source: TrAC Trends in Analytical Chemistry, Available online 19 November 2011
Jun Feng Xiao, Bin Zhou, Habtom Ressom
Metabolomics aims at detection and quantitation of all metabolites in biological samples. The presence of metabolites with a wide variety of physicochemical properties and different levels of abundance challenges existing analytical platforms used for identification and quantitation of metabolites. Significant efforts have been made to improve analytical and computational methods for metabolomics studies.This review focuses on the use of liquid chromatography with tandem mass spectrometry (LC-MS/MS) for quantitative and qualitative metabolomics studies. It illustrates recent developments in computational methods for metabolite identification, including ion annotation, spectral interpretation and spectral matching. We also review selected reaction monitoring and high-resolution MS for metabolite quantitation. We discuss current challenges in metabolite identification and quantitation as well as potential solutions.
Source: TrAC Trends in Analytical Chemistry, Available online 19 November 2011
Jun Feng Xiao, Bin Zhou, Habtom Ressom
Metabolomics aims at detection and quantitation of all metabolites in biological samples. The presence of metabolites with a wide variety of physicochemical properties and different levels of abundance challenges existing analytical platforms used for identification and quantitation of metabolites. Significant efforts have been made to improve analytical and computational methods for metabolomics studies.This review focuses on the use of liquid chromatography with tandem mass spectrometry (LC-MS/MS) for quantitative and qualitative metabolomics studies. It illustrates recent developments in computational methods for metabolite identification, including ion annotation, spectral interpretation and spectral matching. We also review selected reaction monitoring and high-resolution MS for metabolite quantitation. We discuss current challenges in metabolite identification and quantitation as well as potential solutions.
Highlights
► A review of LC-MS/MS based quantitative and qualitative metabolomics studies. ► A framework summarizing computational methods for improved metabolite identification. ► LC-SRM-MS/MS and LC-HRMS-based metabolite quantitation. ► Challenges and future perspectives in metabolite identification and quantitation.Recent developments in fluorescent sensors for trace-level determination of toxic-metal ions
26 November 2011, 01:44:35
Publication year: 2011
Source: TrAC Trends in Analytical Chemistry, Available online 25 November 2011
Mili Dutta, Debasis Das
The literature on the use of fluorescent sensors for the trace-level determination of toxic cations is highly significant. Among different analytical methods, fluorescence is the most attractive due to its robustness, high sensitivity, selectivity, rapidity, ease of measurement and non-destructive methodology. Here, we illustrate different fluorescent probes developed for detection and estimation of toxic cations, including their molecular structure, sensing mechanism, analytical figures of merit and their applications. We provide a critical survey of the fluorescent sensors of each toxic element (i.e. Hg, Ag, Cd, Cr, Pb, Tl, Co and Ni). A separate section contains the sensors that can detect several toxic elements simultaneously, so-called multi-element sensors. We briefly describe the merits and the demerits of the methods. Finally, we outline future prospects in this field.
Source: TrAC Trends in Analytical Chemistry, Available online 25 November 2011
Mili Dutta, Debasis Das
The literature on the use of fluorescent sensors for the trace-level determination of toxic cations is highly significant. Among different analytical methods, fluorescence is the most attractive due to its robustness, high sensitivity, selectivity, rapidity, ease of measurement and non-destructive methodology. Here, we illustrate different fluorescent probes developed for detection and estimation of toxic cations, including their molecular structure, sensing mechanism, analytical figures of merit and their applications. We provide a critical survey of the fluorescent sensors of each toxic element (i.e. Hg, Ag, Cd, Cr, Pb, Tl, Co and Ni). A separate section contains the sensors that can detect several toxic elements simultaneously, so-called multi-element sensors. We briefly describe the merits and the demerits of the methods. Finally, we outline future prospects in this field.
Highlights
► Different fluorescent sensors selective for toxic cations have been illustrated. ► Sensors selective for cationsviz.Hg, Ag, Cd, Cr, Pb, Tl, Co and Ni discussed. ► Advantages and limitations of each fluorescent probe have been critically analysed. ► Analytical and biological applications of the sensors have been thoroughly discussed. ► We have confined our discussion on the topic over the literature for last 10 years.A review of sensor-based methods for monitoring hydrogen sulfide
21 November 2011, 00:38:10
Publication year: 2011
Source: TrAC Trends in Analytical Chemistry, Available online 19 November 2011
Sudhir Kumar Pandey, Ki-Hyun Kim, Kea-Tiong Tang
We review sensor-based methods commonly employed for monitoring hydrogen sulfide (H2S), including recent developments in H2S-sensing instrumentation.We evaluate the basic quality-assurance parameters of different sensor types for quantifying H2S in terms of major operational criteria (e.g., response time, limit of detection, common operating range of concentrations, and stability). We also describe the applicability of these sensor-based methods with respect to practicality in various environmental settings. Finally, we highlight the limitations and the future prospects of these sensor-based methods.
Source: TrAC Trends in Analytical Chemistry, Available online 19 November 2011
Sudhir Kumar Pandey, Ki-Hyun Kim, Kea-Tiong Tang
We review sensor-based methods commonly employed for monitoring hydrogen sulfide (H2S), including recent developments in H2S-sensing instrumentation.We evaluate the basic quality-assurance parameters of different sensor types for quantifying H2S in terms of major operational criteria (e.g., response time, limit of detection, common operating range of concentrations, and stability). We also describe the applicability of these sensor-based methods with respect to practicality in various environmental settings. Finally, we highlight the limitations and the future prospects of these sensor-based methods.
Highlights
► In this work, the emerging sensor-based methodologies for H2S analysis are explored. ► The common sensor types are grouped by their material type and/or sensing principle. ► The efficacy of different sensors is evaluated in terms of QA for real world application. ► Discussion is provided with respect to their advantages, limitations, and future prospects.Metabolite identification and quantitation in LC-MS/MS-based metabolomics
21 November 2011, 00:38:10
Publication year: 2011
Source: TrAC Trends in Analytical Chemistry, Available online 19 November 2011
Jun Feng Xiao, Bin Zhou, Habtom Ressom
Metabolomics aims at detection and quantitation of all metabolites in biological samples. The presence of metabolites with a wide variety of physicochemical properties and different levels of abundance challenges existing analytical platforms used for identification and quantitation of metabolites. Significant efforts have been made to improve analytical and computational methods for metabolomics studies.This review focuses on the use of liquid chromatography with tandem mass spectrometry (LC-MS/MS) for quantitative and qualitative metabolomics studies. It illustrates recent developments in computational methods for metabolite identification, including ion annotation, spectral interpretation and spectral matching. We also review selected reaction monitoring and high-resolution MS for metabolite quantitation. We discuss current challenges in metabolite identification and quantitation as well as potential solutions.
Source: TrAC Trends in Analytical Chemistry, Available online 19 November 2011
Jun Feng Xiao, Bin Zhou, Habtom Ressom
Metabolomics aims at detection and quantitation of all metabolites in biological samples. The presence of metabolites with a wide variety of physicochemical properties and different levels of abundance challenges existing analytical platforms used for identification and quantitation of metabolites. Significant efforts have been made to improve analytical and computational methods for metabolomics studies.This review focuses on the use of liquid chromatography with tandem mass spectrometry (LC-MS/MS) for quantitative and qualitative metabolomics studies. It illustrates recent developments in computational methods for metabolite identification, including ion annotation, spectral interpretation and spectral matching. We also review selected reaction monitoring and high-resolution MS for metabolite quantitation. We discuss current challenges in metabolite identification and quantitation as well as potential solutions.
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