The Experts below are selected from a list of 4221 Experts worldwide ranked by ideXlab platform
Giovanni Bidoglio - One of the best experts on this subject based on the ideXlab platform.
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sucralose screening in european surface waters using a solid phase extraction liquid chromatography triple quadrupole mass spectrometry method
Journal of Chromatography A, 2009Co-Authors: Robert Loos, Kristin Boettcher, Giovanni Locoro, Serafino Contini, Bernd Manfred Gawlik, Giovanni BidoglioAbstract:Abstract An analytical method was developed for the analysis of sucralose, a persistent chlorinated calorie-free Sugar Substitute, in surface waters. The method is based on solid-phase extraction (SPE) of 400 mL water using Oasis HLB (Waters) adsorber material, followed by negative electrospray ionization (ESI) triple quadrupole LC–MS–MS detection. Quantification was performed by external calibration, as well as by isotope dilution with deuterated sucralose d6 internal standard. Extraction with Oasis HLB, a polymeric adsorbent suited for polar compounds, was much more efficient at neutral pH than at pH 3; a recovery of 62 ± 9% (n = 6; determined at 1 μg/L) could be achieved. Strong ion suppression caused by matrix substances was observed for sucralose in the SPE extracts. The analysis of 120 river surface water samples from 27 European countries showed that sucralose, which is in use in Europe since beginning 2005, can be found in the aquatic environment, at concentrations up to 1 μg/L. Sucralose was predominately found in samples from the UK, Belgium, the Netherlands, France, Switzerland, Spain, Italy, Norway, and Sweden, suggesting an increased use of the substance in Western Europe.
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sucralose screening in european surface waters using a solid phase extraction liquid chromatography triple quadrupole mass spectrometry method
Journal of Chromatography A, 2009Co-Authors: Robert Loos, Kristin Boettcher, Giovanni Locoro, Serafino Contini, Bernd Manfred Gawlik, Giovanni BidoglioAbstract:Abstract An analytical method was developed for the analysis of sucralose, a persistent chlorinated calorie-free Sugar Substitute, in surface waters. The method is based on solid-phase extraction (SPE) of 400 mL water using Oasis HLB (Waters) adsorber material, followed by negative electrospray ionization (ESI) triple quadrupole LC–MS–MS detection. Quantification was performed by external calibration, as well as by isotope dilution with deuterated sucralose d6 internal standard. Extraction with Oasis HLB, a polymeric adsorbent suited for polar compounds, was much more efficient at neutral pH than at pH 3; a recovery of 62 ± 9% (n = 6; determined at 1 μg/L) could be achieved. Strong ion suppression caused by matrix substances was observed for sucralose in the SPE extracts. The analysis of 120 river surface water samples from 27 European countries showed that sucralose, which is in use in Europe since beginning 2005, can be found in the aquatic environment, at concentrations up to 1 μg/L. Sucralose was predominately found in samples from the UK, Belgium, the Netherlands, France, Switzerland, Spain, Italy, Norway, and Sweden, suggesting an increased use of the substance in Western Europe.
Mahmoud Otroshy - One of the best experts on this subject based on the ideXlab platform.
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effects of plant growth promoting rhizobacteria and arbuscular mycorrhizal fungus on plant growth stevioside npk and chlorophyll content of stevia rebaudiana
Journal of Plant Interactions, 2014Co-Authors: Farinaz Vafadar, Rayhaneh Amooaghaie, Mahmoud OtroshyAbstract:Stevia rebaudiana Bertoni is a unique medicinal plant which is mostly utilized as a Sugar Substitute for diabetic patients. In this research, regenerated plantlets of stevia in tissue culture is transferred to pots in greenhouse and inoculated with plant-growth-promoting rhizobacteria (PGPRs) (Bacillus polymixa, Pseudomonas putida, and Azotobacter chroococcum) and arbuscular mycorrhizal fungus (AMF) (Glomus intraradices). The results showed that in comparison to control, inoculation with a single microorganism, significantly increased root and shoot biomass as well as stevioside, chlorophyll, and NPK content in plants. However, such increased effects have been found to be further enhanced significantly due to dual compatible mixtures of inoculants resulting from their strong synergistic relationships among themselves. All growth parameters recorded the highest in 60-days-old plants in the treatment of Glomus+Azotobacter and followed with Glomus+Bacillus and Azotobacter+Pseudomonas treatments, respectively...
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effects of plant growth promoting rhizobacteria and arbuscular mycorrhizal fungus on plant growth stevioside npk and chlorophyll content of stevia rebaudiana
Journal of Plant Interactions, 2014Co-Authors: Farinaz Vafadar, Rayhaneh Amooaghaie, Mahmoud OtroshyAbstract:Stevia rebaudiana Bertoni is a unique medicinal plant which is mostly utilized as a Sugar Substitute for diabetic patients. In this research, regenerated plantlets of stevia in tissue culture is tr...
Robert Loos - One of the best experts on this subject based on the ideXlab platform.
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sucralose screening in european surface waters using a solid phase extraction liquid chromatography triple quadrupole mass spectrometry method
Journal of Chromatography A, 2009Co-Authors: Robert Loos, Kristin Boettcher, Giovanni Locoro, Serafino Contini, Bernd Manfred Gawlik, Giovanni BidoglioAbstract:Abstract An analytical method was developed for the analysis of sucralose, a persistent chlorinated calorie-free Sugar Substitute, in surface waters. The method is based on solid-phase extraction (SPE) of 400 mL water using Oasis HLB (Waters) adsorber material, followed by negative electrospray ionization (ESI) triple quadrupole LC–MS–MS detection. Quantification was performed by external calibration, as well as by isotope dilution with deuterated sucralose d6 internal standard. Extraction with Oasis HLB, a polymeric adsorbent suited for polar compounds, was much more efficient at neutral pH than at pH 3; a recovery of 62 ± 9% (n = 6; determined at 1 μg/L) could be achieved. Strong ion suppression caused by matrix substances was observed for sucralose in the SPE extracts. The analysis of 120 river surface water samples from 27 European countries showed that sucralose, which is in use in Europe since beginning 2005, can be found in the aquatic environment, at concentrations up to 1 μg/L. Sucralose was predominately found in samples from the UK, Belgium, the Netherlands, France, Switzerland, Spain, Italy, Norway, and Sweden, suggesting an increased use of the substance in Western Europe.
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sucralose screening in european surface waters using a solid phase extraction liquid chromatography triple quadrupole mass spectrometry method
Journal of Chromatography A, 2009Co-Authors: Robert Loos, Kristin Boettcher, Giovanni Locoro, Serafino Contini, Bernd Manfred Gawlik, Giovanni BidoglioAbstract:Abstract An analytical method was developed for the analysis of sucralose, a persistent chlorinated calorie-free Sugar Substitute, in surface waters. The method is based on solid-phase extraction (SPE) of 400 mL water using Oasis HLB (Waters) adsorber material, followed by negative electrospray ionization (ESI) triple quadrupole LC–MS–MS detection. Quantification was performed by external calibration, as well as by isotope dilution with deuterated sucralose d6 internal standard. Extraction with Oasis HLB, a polymeric adsorbent suited for polar compounds, was much more efficient at neutral pH than at pH 3; a recovery of 62 ± 9% (n = 6; determined at 1 μg/L) could be achieved. Strong ion suppression caused by matrix substances was observed for sucralose in the SPE extracts. The analysis of 120 river surface water samples from 27 European countries showed that sucralose, which is in use in Europe since beginning 2005, can be found in the aquatic environment, at concentrations up to 1 μg/L. Sucralose was predominately found in samples from the UK, Belgium, the Netherlands, France, Switzerland, Spain, Italy, Norway, and Sweden, suggesting an increased use of the substance in Western Europe.
Kristin Boettcher - One of the best experts on this subject based on the ideXlab platform.
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sucralose screening in european surface waters using a solid phase extraction liquid chromatography triple quadrupole mass spectrometry method
Journal of Chromatography A, 2009Co-Authors: Robert Loos, Kristin Boettcher, Giovanni Locoro, Serafino Contini, Bernd Manfred Gawlik, Giovanni BidoglioAbstract:Abstract An analytical method was developed for the analysis of sucralose, a persistent chlorinated calorie-free Sugar Substitute, in surface waters. The method is based on solid-phase extraction (SPE) of 400 mL water using Oasis HLB (Waters) adsorber material, followed by negative electrospray ionization (ESI) triple quadrupole LC–MS–MS detection. Quantification was performed by external calibration, as well as by isotope dilution with deuterated sucralose d6 internal standard. Extraction with Oasis HLB, a polymeric adsorbent suited for polar compounds, was much more efficient at neutral pH than at pH 3; a recovery of 62 ± 9% (n = 6; determined at 1 μg/L) could be achieved. Strong ion suppression caused by matrix substances was observed for sucralose in the SPE extracts. The analysis of 120 river surface water samples from 27 European countries showed that sucralose, which is in use in Europe since beginning 2005, can be found in the aquatic environment, at concentrations up to 1 μg/L. Sucralose was predominately found in samples from the UK, Belgium, the Netherlands, France, Switzerland, Spain, Italy, Norway, and Sweden, suggesting an increased use of the substance in Western Europe.
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sucralose screening in european surface waters using a solid phase extraction liquid chromatography triple quadrupole mass spectrometry method
Journal of Chromatography A, 2009Co-Authors: Robert Loos, Kristin Boettcher, Giovanni Locoro, Serafino Contini, Bernd Manfred Gawlik, Giovanni BidoglioAbstract:Abstract An analytical method was developed for the analysis of sucralose, a persistent chlorinated calorie-free Sugar Substitute, in surface waters. The method is based on solid-phase extraction (SPE) of 400 mL water using Oasis HLB (Waters) adsorber material, followed by negative electrospray ionization (ESI) triple quadrupole LC–MS–MS detection. Quantification was performed by external calibration, as well as by isotope dilution with deuterated sucralose d6 internal standard. Extraction with Oasis HLB, a polymeric adsorbent suited for polar compounds, was much more efficient at neutral pH than at pH 3; a recovery of 62 ± 9% (n = 6; determined at 1 μg/L) could be achieved. Strong ion suppression caused by matrix substances was observed for sucralose in the SPE extracts. The analysis of 120 river surface water samples from 27 European countries showed that sucralose, which is in use in Europe since beginning 2005, can be found in the aquatic environment, at concentrations up to 1 μg/L. Sucralose was predominately found in samples from the UK, Belgium, the Netherlands, France, Switzerland, Spain, Italy, Norway, and Sweden, suggesting an increased use of the substance in Western Europe.
Bernd Manfred Gawlik - One of the best experts on this subject based on the ideXlab platform.
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sucralose screening in european surface waters using a solid phase extraction liquid chromatography triple quadrupole mass spectrometry method
Journal of Chromatography A, 2009Co-Authors: Robert Loos, Kristin Boettcher, Giovanni Locoro, Serafino Contini, Bernd Manfred Gawlik, Giovanni BidoglioAbstract:Abstract An analytical method was developed for the analysis of sucralose, a persistent chlorinated calorie-free Sugar Substitute, in surface waters. The method is based on solid-phase extraction (SPE) of 400 mL water using Oasis HLB (Waters) adsorber material, followed by negative electrospray ionization (ESI) triple quadrupole LC–MS–MS detection. Quantification was performed by external calibration, as well as by isotope dilution with deuterated sucralose d6 internal standard. Extraction with Oasis HLB, a polymeric adsorbent suited for polar compounds, was much more efficient at neutral pH than at pH 3; a recovery of 62 ± 9% (n = 6; determined at 1 μg/L) could be achieved. Strong ion suppression caused by matrix substances was observed for sucralose in the SPE extracts. The analysis of 120 river surface water samples from 27 European countries showed that sucralose, which is in use in Europe since beginning 2005, can be found in the aquatic environment, at concentrations up to 1 μg/L. Sucralose was predominately found in samples from the UK, Belgium, the Netherlands, France, Switzerland, Spain, Italy, Norway, and Sweden, suggesting an increased use of the substance in Western Europe.
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sucralose screening in european surface waters using a solid phase extraction liquid chromatography triple quadrupole mass spectrometry method
Journal of Chromatography A, 2009Co-Authors: Robert Loos, Kristin Boettcher, Giovanni Locoro, Serafino Contini, Bernd Manfred Gawlik, Giovanni BidoglioAbstract:Abstract An analytical method was developed for the analysis of sucralose, a persistent chlorinated calorie-free Sugar Substitute, in surface waters. The method is based on solid-phase extraction (SPE) of 400 mL water using Oasis HLB (Waters) adsorber material, followed by negative electrospray ionization (ESI) triple quadrupole LC–MS–MS detection. Quantification was performed by external calibration, as well as by isotope dilution with deuterated sucralose d6 internal standard. Extraction with Oasis HLB, a polymeric adsorbent suited for polar compounds, was much more efficient at neutral pH than at pH 3; a recovery of 62 ± 9% (n = 6; determined at 1 μg/L) could be achieved. Strong ion suppression caused by matrix substances was observed for sucralose in the SPE extracts. The analysis of 120 river surface water samples from 27 European countries showed that sucralose, which is in use in Europe since beginning 2005, can be found in the aquatic environment, at concentrations up to 1 μg/L. Sucralose was predominately found in samples from the UK, Belgium, the Netherlands, France, Switzerland, Spain, Italy, Norway, and Sweden, suggesting an increased use of the substance in Western Europe.
