The Experts below are selected from a list of 156 Experts worldwide ranked by ideXlab platform

Wallans Torres Pio Dos Santos - One of the best experts on this subject based on the ideXlab platform.

  • Electrochemical sensing of NBOMes and other new psychoactive substances in Blotting Paper by square-wave voltammetry on a boron-doped diamond electrode
    Analytical Methods, 2018
    Co-Authors: Glayton A. Souza, Dilton M. Pimentel, Amanda B. Lima, Tiago J. Guedes, Luciano Chaves Arantes, Anderson C. De Oliveira, Raquel M.f. Sousa, Rodrigo A.a. Munoz, Wallans Torres Pio Dos Santos
    Abstract:

    The electrochemical quantification of new psychoactive substances 2,5-dimethoxy-N-(2-methoxybenzyl)phenethylamines, commonly described as NBOMes and their correlates, 2,5-dimethoxy phenethylamine structures, also known as 2C family compounds, in seized Blotting Paper is presented using square-wave voltammetry (SWV) on a boron-doped diamond (BDD) electrode. Under optimized experimental conditions, linear analytical curves were obtained in the range from 1 to 555 μmol L−1 for three NBOMes and 2C–B with detection limit values between 0.1 and 0.3 μmol L−1 (corresponding to 0.03 and 0.10 μg mL−1) and a repeatability of around 1% (n = 10) for the detection of all analytes. The accuracy of the proposed method was evaluated using seized samples, which were also analyzed by quadrupole time of flight liquid chromatography-mass spectrometry (QTOF LC-MS), with perfect agreement, and free from interference of the sample matrix (recovery values between 98 and 110%).

  • voltammetric signatures of 2 5 dimethoxy n 2 methoxybenzyl phenethylamines on boron doped diamond electrodes detection in Blotting Paper samples
    Electrochemistry Communications, 2017
    Co-Authors: Glayton A. Souza, Tiago J. Guedes, Luciano Chaves Arantes, Anderson C. De Oliveira, Rodrigo A.a. Munoz, Pablo A. Marinho, Wallans Torres Pio Dos Santos
    Abstract:

    Abstract This work is concerned with the electrochemical detection of new psychoactive substances (NPSs), in particular 2,5-dimethoxy-N-(2-methoxybenzyl) phenethylamine structures (NBOMes) and the analogous 2,5-dimethoxy phenethylamine structures (2C-X group) on boron-doped diamond (BDD) electrodes. Fast square-wave voltammetry was used to identify the substances in question. The antifouling properties of the BDD surface resulted in stable, repeatable, sensitive and unique voltammetric responses for these NPSs, producing different voltammetric signatures. Different NBOMes were identified by voltammetric methods in Blotting Paper seized from the drug market, without any interference from LSD, another psychedelic drug distributed via Blotting Paper. The proposed method achieved detection limits lower than 0.1 μmol L − 1 with high precision (RSD  n  = 10) for all analytes.

Glayton A. Souza - One of the best experts on this subject based on the ideXlab platform.

  • Electrochemical sensing of NBOMes and other new psychoactive substances in Blotting Paper by square-wave voltammetry on a boron-doped diamond electrode
    Analytical Methods, 2018
    Co-Authors: Glayton A. Souza, Dilton M. Pimentel, Amanda B. Lima, Tiago J. Guedes, Luciano Chaves Arantes, Anderson C. De Oliveira, Raquel M.f. Sousa, Rodrigo A.a. Munoz, Wallans Torres Pio Dos Santos
    Abstract:

    The electrochemical quantification of new psychoactive substances 2,5-dimethoxy-N-(2-methoxybenzyl)phenethylamines, commonly described as NBOMes and their correlates, 2,5-dimethoxy phenethylamine structures, also known as 2C family compounds, in seized Blotting Paper is presented using square-wave voltammetry (SWV) on a boron-doped diamond (BDD) electrode. Under optimized experimental conditions, linear analytical curves were obtained in the range from 1 to 555 μmol L−1 for three NBOMes and 2C–B with detection limit values between 0.1 and 0.3 μmol L−1 (corresponding to 0.03 and 0.10 μg mL−1) and a repeatability of around 1% (n = 10) for the detection of all analytes. The accuracy of the proposed method was evaluated using seized samples, which were also analyzed by quadrupole time of flight liquid chromatography-mass spectrometry (QTOF LC-MS), with perfect agreement, and free from interference of the sample matrix (recovery values between 98 and 110%).

  • voltammetric signatures of 2 5 dimethoxy n 2 methoxybenzyl phenethylamines on boron doped diamond electrodes detection in Blotting Paper samples
    Electrochemistry Communications, 2017
    Co-Authors: Glayton A. Souza, Tiago J. Guedes, Luciano Chaves Arantes, Anderson C. De Oliveira, Rodrigo A.a. Munoz, Pablo A. Marinho, Wallans Torres Pio Dos Santos
    Abstract:

    Abstract This work is concerned with the electrochemical detection of new psychoactive substances (NPSs), in particular 2,5-dimethoxy-N-(2-methoxybenzyl) phenethylamine structures (NBOMes) and the analogous 2,5-dimethoxy phenethylamine structures (2C-X group) on boron-doped diamond (BDD) electrodes. Fast square-wave voltammetry was used to identify the substances in question. The antifouling properties of the BDD surface resulted in stable, repeatable, sensitive and unique voltammetric responses for these NPSs, producing different voltammetric signatures. Different NBOMes were identified by voltammetric methods in Blotting Paper seized from the drug market, without any interference from LSD, another psychedelic drug distributed via Blotting Paper. The proposed method achieved detection limits lower than 0.1 μmol L − 1 with high precision (RSD  n  = 10) for all analytes.

  • Voltammetric signatures of 2,5-dimethoxy-N-(2-methoxybenzyl) phenethylamines on boron-doped diamond electrodes: Detection in Blotting Paper samples
    Elsevier, 2017
    Co-Authors: Glayton A. Souza, Tiago J. Guedes, Anderson C. De Oliveira, Rodrigo A.a. Munoz, Luciano C. Arantes, Pablo A. Marinho, Wallans T.p. Dos Santos
    Abstract:

    This work is concerned with the electrochemical detection of new psychoactive substances (NPSs), in particular 2,5-dimethoxy-N-(2-methoxybenzyl) phenethylamine structures (NBOMes) and the analogous 2,5-dimethoxy phenethylamine structures (2C-X group) on boron-doped diamond (BDD) electrodes. Fast square-wave voltammetry was used to identify the substances in question. The antifouling properties of the BDD surface resulted in stable, repeatable, sensitive and unique voltammetric responses for these NPSs, producing different voltammetric signatures. Different NBOMes were identified by voltammetric methods in Blotting Paper seized from the drug market, without any interference from LSD, another psychedelic drug distributed via Blotting Paper. The proposed method achieved detection limits lower than 0.1μmolL−1 with high precision (RSD

Didier Raoult - One of the best experts on this subject based on the ideXlab platform.

  • diagnosis of rickettsial diseases using samples dried on Blotting Paper
    Clinical and Vaccine Immunology, 1999
    Co-Authors: Florence Fenollar, Didier Raoult
    Abstract:

    The use of filter Paper is an inexpensive and convenient method for collecting, storing, and transporting blood samples for serological studies. In addition, samples occupy little space and can be readily transported without refrigeration. Rickettsial diseases often evolve according to an epidemic mode and are now considered reemerging diseases, especially in developing countries, under conditions where fieldwork could be difficult. The suitability of collecting whole-blood specimens on filter Paper discs for rickettsial antibody assay was evaluated. Dried blood specimens from 64 individuals with antibodies to Coxiella burnetii, Bartonella quintana, or Rickettsia conorii were tested for rickettsial antibodies by microimmunofluorescence. Although occasional titers were 1 or 2 dilutions lower than those of tested serum samples, no statistically significant differences were observed. Among patients with negative serology, no false positives were found. This study demonstrated that the recovery of antibodies from finger-stick blood dried on filter Paper after elution produces results comparable to those obtained by recovering antibodies from serum. Storing Paper samples for 1 month at room temperature or at 4°C did not significantly affect the level of antibodies recovered. This report shows the utility of this sample collection method in developing countries where refrigeration is not possible and venipuncture is problematic.

Tiago J. Guedes - One of the best experts on this subject based on the ideXlab platform.

  • Electrochemical sensing of NBOMes and other new psychoactive substances in Blotting Paper by square-wave voltammetry on a boron-doped diamond electrode
    Analytical Methods, 2018
    Co-Authors: Glayton A. Souza, Dilton M. Pimentel, Amanda B. Lima, Tiago J. Guedes, Luciano Chaves Arantes, Anderson C. De Oliveira, Raquel M.f. Sousa, Rodrigo A.a. Munoz, Wallans Torres Pio Dos Santos
    Abstract:

    The electrochemical quantification of new psychoactive substances 2,5-dimethoxy-N-(2-methoxybenzyl)phenethylamines, commonly described as NBOMes and their correlates, 2,5-dimethoxy phenethylamine structures, also known as 2C family compounds, in seized Blotting Paper is presented using square-wave voltammetry (SWV) on a boron-doped diamond (BDD) electrode. Under optimized experimental conditions, linear analytical curves were obtained in the range from 1 to 555 μmol L−1 for three NBOMes and 2C–B with detection limit values between 0.1 and 0.3 μmol L−1 (corresponding to 0.03 and 0.10 μg mL−1) and a repeatability of around 1% (n = 10) for the detection of all analytes. The accuracy of the proposed method was evaluated using seized samples, which were also analyzed by quadrupole time of flight liquid chromatography-mass spectrometry (QTOF LC-MS), with perfect agreement, and free from interference of the sample matrix (recovery values between 98 and 110%).

  • voltammetric signatures of 2 5 dimethoxy n 2 methoxybenzyl phenethylamines on boron doped diamond electrodes detection in Blotting Paper samples
    Electrochemistry Communications, 2017
    Co-Authors: Glayton A. Souza, Tiago J. Guedes, Luciano Chaves Arantes, Anderson C. De Oliveira, Rodrigo A.a. Munoz, Pablo A. Marinho, Wallans Torres Pio Dos Santos
    Abstract:

    Abstract This work is concerned with the electrochemical detection of new psychoactive substances (NPSs), in particular 2,5-dimethoxy-N-(2-methoxybenzyl) phenethylamine structures (NBOMes) and the analogous 2,5-dimethoxy phenethylamine structures (2C-X group) on boron-doped diamond (BDD) electrodes. Fast square-wave voltammetry was used to identify the substances in question. The antifouling properties of the BDD surface resulted in stable, repeatable, sensitive and unique voltammetric responses for these NPSs, producing different voltammetric signatures. Different NBOMes were identified by voltammetric methods in Blotting Paper seized from the drug market, without any interference from LSD, another psychedelic drug distributed via Blotting Paper. The proposed method achieved detection limits lower than 0.1 μmol L − 1 with high precision (RSD  n  = 10) for all analytes.

  • Voltammetric signatures of 2,5-dimethoxy-N-(2-methoxybenzyl) phenethylamines on boron-doped diamond electrodes: Detection in Blotting Paper samples
    Elsevier, 2017
    Co-Authors: Glayton A. Souza, Tiago J. Guedes, Anderson C. De Oliveira, Rodrigo A.a. Munoz, Luciano C. Arantes, Pablo A. Marinho, Wallans T.p. Dos Santos
    Abstract:

    This work is concerned with the electrochemical detection of new psychoactive substances (NPSs), in particular 2,5-dimethoxy-N-(2-methoxybenzyl) phenethylamine structures (NBOMes) and the analogous 2,5-dimethoxy phenethylamine structures (2C-X group) on boron-doped diamond (BDD) electrodes. Fast square-wave voltammetry was used to identify the substances in question. The antifouling properties of the BDD surface resulted in stable, repeatable, sensitive and unique voltammetric responses for these NPSs, producing different voltammetric signatures. Different NBOMes were identified by voltammetric methods in Blotting Paper seized from the drug market, without any interference from LSD, another psychedelic drug distributed via Blotting Paper. The proposed method achieved detection limits lower than 0.1μmolL−1 with high precision (RSD

Anderson C. De Oliveira - One of the best experts on this subject based on the ideXlab platform.

  • Electrochemical sensing of NBOMes and other new psychoactive substances in Blotting Paper by square-wave voltammetry on a boron-doped diamond electrode
    Analytical Methods, 2018
    Co-Authors: Glayton A. Souza, Dilton M. Pimentel, Amanda B. Lima, Tiago J. Guedes, Luciano Chaves Arantes, Anderson C. De Oliveira, Raquel M.f. Sousa, Rodrigo A.a. Munoz, Wallans Torres Pio Dos Santos
    Abstract:

    The electrochemical quantification of new psychoactive substances 2,5-dimethoxy-N-(2-methoxybenzyl)phenethylamines, commonly described as NBOMes and their correlates, 2,5-dimethoxy phenethylamine structures, also known as 2C family compounds, in seized Blotting Paper is presented using square-wave voltammetry (SWV) on a boron-doped diamond (BDD) electrode. Under optimized experimental conditions, linear analytical curves were obtained in the range from 1 to 555 μmol L−1 for three NBOMes and 2C–B with detection limit values between 0.1 and 0.3 μmol L−1 (corresponding to 0.03 and 0.10 μg mL−1) and a repeatability of around 1% (n = 10) for the detection of all analytes. The accuracy of the proposed method was evaluated using seized samples, which were also analyzed by quadrupole time of flight liquid chromatography-mass spectrometry (QTOF LC-MS), with perfect agreement, and free from interference of the sample matrix (recovery values between 98 and 110%).

  • voltammetric signatures of 2 5 dimethoxy n 2 methoxybenzyl phenethylamines on boron doped diamond electrodes detection in Blotting Paper samples
    Electrochemistry Communications, 2017
    Co-Authors: Glayton A. Souza, Tiago J. Guedes, Luciano Chaves Arantes, Anderson C. De Oliveira, Rodrigo A.a. Munoz, Pablo A. Marinho, Wallans Torres Pio Dos Santos
    Abstract:

    Abstract This work is concerned with the electrochemical detection of new psychoactive substances (NPSs), in particular 2,5-dimethoxy-N-(2-methoxybenzyl) phenethylamine structures (NBOMes) and the analogous 2,5-dimethoxy phenethylamine structures (2C-X group) on boron-doped diamond (BDD) electrodes. Fast square-wave voltammetry was used to identify the substances in question. The antifouling properties of the BDD surface resulted in stable, repeatable, sensitive and unique voltammetric responses for these NPSs, producing different voltammetric signatures. Different NBOMes were identified by voltammetric methods in Blotting Paper seized from the drug market, without any interference from LSD, another psychedelic drug distributed via Blotting Paper. The proposed method achieved detection limits lower than 0.1 μmol L − 1 with high precision (RSD  n  = 10) for all analytes.

  • Voltammetric signatures of 2,5-dimethoxy-N-(2-methoxybenzyl) phenethylamines on boron-doped diamond electrodes: Detection in Blotting Paper samples
    Elsevier, 2017
    Co-Authors: Glayton A. Souza, Tiago J. Guedes, Anderson C. De Oliveira, Rodrigo A.a. Munoz, Luciano C. Arantes, Pablo A. Marinho, Wallans T.p. Dos Santos
    Abstract:

    This work is concerned with the electrochemical detection of new psychoactive substances (NPSs), in particular 2,5-dimethoxy-N-(2-methoxybenzyl) phenethylamine structures (NBOMes) and the analogous 2,5-dimethoxy phenethylamine structures (2C-X group) on boron-doped diamond (BDD) electrodes. Fast square-wave voltammetry was used to identify the substances in question. The antifouling properties of the BDD surface resulted in stable, repeatable, sensitive and unique voltammetric responses for these NPSs, producing different voltammetric signatures. Different NBOMes were identified by voltammetric methods in Blotting Paper seized from the drug market, without any interference from LSD, another psychedelic drug distributed via Blotting Paper. The proposed method achieved detection limits lower than 0.1μmolL−1 with high precision (RSD