Identification of adulteration of gasoline applying multivariate data analysis techniques HCA and KNN in chromatographic data

VL Skrobot, EVR Castro, RCC Pereira, VMD Pasa… - Energy & …, 2005 - ACS Publications
Chemometric data analysis tools were applied to chromatographic data to identify the
presence of solvents in gasoline samples from gas stations in Minas Gerais state, Brazil. A …

Use of principal component analysis (PCA) and linear discriminant analysis (LDA) in gas chromatographic (GC) data in the investigation of gasoline adulteration

VL Skrobot, EVR Castro, RCC Pereira, VMD Pasa… - Energy & …, 2007 - ACS Publications
Chemometric data analysis was applied to chromatographic data as a modeling tool to
identify the presence of solvents in gasoline obtained at gas stations in the Minas Gerais …

Brazilian gasoline quality: study of adulteration by statistical analysis and gas chromatography

LSM Wiedemann, LA d'Avila… - Journal of the Brazilian …, 2005 - SciELO Brasil
The addition of organic solvents (heavy aliphatic, light aliphatic and aromatic hydrocarbons)
in Brazilian gasoline is unfortunately very frequent, and this illicit practice does not …

Chemometrics in fuel science: demonstration of the feasibility of chemometrics analyses applied to physicochemical parameters to screen solvent tracers in Brazilian …

GT Tanaka, F de Oliveira Ferreira… - Journal of …, 2011 - Wiley Online Library
Samples of commercial gasoline, from the National Program of Fuel Quality Monitoring of
the National Petroleum Agency, were collected from gas stations located in the Midwestern …

Adulteration detection of Brazilian gasoline samples by statistical analysis

LSM Wiedemann, LA d'Avila, DA Azevedo - Fuel, 2005 - Elsevier
Unfortunately, addition of organic solvents (heavy aliphatic, light aliphatic and aromatic
hydrocarbons) in Brazilian gasoline is very frequent, and this illegal practice does not …

Identification of gasoline adulteration using comprehensive two-dimensional gas chromatography combined to multivariate data processing

MP Pedroso, LAF de Godoy, EC Ferreira… - … of Chromatography A, 2008 - Elsevier
A method to detect potential adulteration of commercial gasoline (Type C gasoline, available
in Brazil and containing 25%(v/v) ethanol) is presented here. Comprehensive two …

Screening Brazilian C gasoline quality: Application of the SIMCA chemometric method to gas chromatographic data

DL Flumignan, AG Tininis, FO Ferreira… - Analytica chimica …, 2007 - Elsevier
A total of 2400 samples of commercial Brazilian C gasoline were collected over a 6-month
period from different gas stations in the São Paulo state, Brazil, and analysed with respect to …

Screening Brazilian commercial gasoline quality by hydrogen nuclear magnetic resonance spectroscopic fingerprintings and pattern-recognition multivariate …

DL Flumignan, N Boralle, JE De Oliveira - Talanta, 2010 - Elsevier
The identification of gasoline adulteration by organic solvents is not an easy task, because
compounds that constitute the solvents are already in gasoline composition. In this work, the …

Quality assessment of gasoline using comprehensive two‐dimensional gas chromatography combined with unfolded partial least squares: A reliable approach for the …

H Parastar, S Mostafapour… - Journal of separation …, 2016 - Wiley Online Library
Comprehensive two‐dimensional gas chromatography and flame ionization detection
combined with unfolded‐partial least squares is proposed as a simple, fast and reliable …

Identification of gasoline origin by physical and chemical properties and multivariate analysis

PJS Barbeira, RCC Pereira, CNC Corgozinho - Energy & fuels, 2007 - ACS Publications
Hierarchical cluster and linear discriminant analysis, associated with physicochemical
assays, were used to identify the origin of gasoline commercialized in Brazilian gas stations …