Search Results - "Maldaner, Adriano"
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Evaluation of a low-cost portable near-infrared spectrophotometer for in situ cocaine profiling
Published in Talanta (Oxford) (01-08-2019)“…The potential of a low-cost (∼US$ 1000) portable near-infrared (NIR) spectrophotometer for in situ characterization of seized cocaine samples was evaluated. A…”
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A compact Fourier-transform near-infrared spectrophotometer and chemometrics for characterizing a comprehensive set of seized ecstasy samples
Published in Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy (05-06-2024)“…[Display omitted] •Near-infrared spectroscopy identifies and quantifies ecstasy seized samples.•Two level SIMCA classification minimizes the risk of forensic…”
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Swift electrochemical sensing of diltiazem employing highly-selective molecularly-imprinted 3-amino-4-hydroxybenzoic acid
Published in Journal of electroanalytical chemistry (Lausanne, Switzerland) (15-04-2022)“…[Display omitted] •For the first time, an electrochemical molecularly-imprinted polymer was prepared for the selective detection of diltiazem, a calcium…”
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An overview of New Psychoactive Substances (NPS) in northeast Brazil: NMR-based identification and analysis of ecstasy tablets by GC-MS
Published in Forensic science international (01-03-2023)“…The actual illicit market for synthetic drugs is characterized by a wide variety of psychoactive substances of different chemical and pharmacological classes,…”
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Fast determination of amphetamine-type stimulants and synthetic cathinones in whole blood samples using protein precipitation and LC-MS/MS
Published in Microchemical journal (01-04-2021)“…•This work was focused on 11 psychoactive substances, namely amphetamine-type stimulants and synthetic cathinones.•A method based on PPT-LC-MS/MS was developed…”
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Electroanalytical profiling of cocaine samples by means of an electropolymerized molecularly imprinted polymer using benzocaine as the template molecule
Published in Analyst (London) (07-03-2021)“…The analysis of 'cutting' or additive agents in cocaine, like benzocaine (BZC), allows police analysts to identify each component of the sample, thus obtaining…”
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Wastewater-Based Epidemiology of Cocaine in the Brazilian Federal District: Spatial Distribution, Weekly Variation and Sample Preservation Strategies
Published in Journal of the Brazilian Chemical Society (01-11-2018)“…The distribution of consumed cocaine in the Brazilian Federal District (FD) was estimated using the wastewater-based epidemiology (WBE) approach. Sewage…”
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Development and Validation of a Gas Chromatographic Method for the Quantification of Minor Alkaloids in Cocaine
Published in Journal of the Brazilian Chemical Society (01-04-2021)“…The quantification of minor alkaloids in seized cocaine can provide information for drug profiling and law enforcement initiatives. This work presents the…”
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A Validated NMR Approach for MDMA Quantification in Ecstasy Tablets
Published in Journal of the Brazilian Chemical Society (01-09-2018)“…In recent years, ecstasy trafficking has grown in complexity and tablets has been commonly sold containing different contents of…”
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Cocaine and adulterants analysis in seized drug samples by infrared spectroscopy and MCR-ALS
Published in Forensic science international (01-09-2018)“…•Direct FTIR analysis of seized cocaine samples.•Cocaine and adulterants determination.•Validation with a significative number of seized samples…”
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An optical sensor for the detection and quantification of lidocaine in cocaine samples
Published in Analyst (London) (21-10-2020)“…An optical sensor (OS) was synthesized by mixing 10,12-pentacosadiinoic acid (PDA) with a triblock copolymer for use in the detection/quantification of…”
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Wastewater surveillance to assess cocaine and methylenedioxymethamphetamine use trends during a major music festival in Brazil
Published in Drug testing and analysis (28-03-2024)“…Wastewater-based epidemiology was applied in northeastern Brazil during a dance festival, revealing that cocaine consumption doubled during the event days. The…”
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Understanding Illicit Drug Use Trends During the Carnival Holiday in the Brazilian Capital Through Wastewater Analysis
Published in Frontiers in analytical science (23-06-2022)“…Cocaine and cannabis consumption during and after the 2019 Carnival holiday were assessed using the wastewater-based epidemiology (WBE) in the capital of…”
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Illicit Drugs, Metabolites and Adulterants in Wastewater: Monitoring Community Drug Abuse in the Brazilian Federal District during the 2014 Soccer World Cup
Published in Journal of the Brazilian Chemical Society (01-11-2017)“…A multiresidue method was developed to estimate community drug use during two weekends of the 2014 Soccer World Cup via wastewater analyses. Five of the 16…”
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Screening of seized cocaine samples using electrophoresis microchips with integrated contactless conductivity detection
Published in Electrophoresis (01-09-2018)“…This study describes the development of a new analytical method for the separation and detection of cocaine (COC) and its adulterants, or cutting agents, using…”
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Quantitative NMR as a tool for analysis of new psychoactive substances
Published in Forensic chemistry (01-12-2020)“…[Display omitted] •The molecular structure of twelve NPS is elucidated by NMR spectroscopy.•The amount of each NPS is quantitatively determined by 1H-qNMR.•The…”
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Classification of Brazilian and foreign gasolines adulterated with alcohol using infrared spectroscopy
Published in Forensic science international (01-08-2015)“…Highlights • Method based on middle infrared spectroscopy to classify gasoline as to its origin. • PLS-DA and SIMCA techniques used to build classification…”
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Direct Determination of N-Nitrosoglyphosate in Technical Glyphosate Using Ion Chromatography with UV Detection
Published in Journal of the Brazilian Chemical Society (01-07-2017)“…The official method for analyzing N-nitrosoglyphosate (NNG), a relevant impurity, in glyphosate matrix demands complicated instrumentation and operating…”
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Correlation of Cocaine Hydrochloride Samples Seized in Brazil Based on Determination of Residual Solvents: An Innovative Chemometric Method for Determination of Linkage Thresholds
Published in Analytical chemistry (Washington) (19-02-2013)“…Cocaine sample correlation provides important information in the identification of traffic networks. However, available methods for estimating if samples are…”
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Brazilian Federal Police drug chemical profiling — The PeQui Project
Published in Science & justice (01-07-2014)“…Abstract Over the past six years the Brazilian Federal Police has undertaken major efforts in order to implement and to develop its own drug chemical profiling…”
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