VGA-100/ VGA-101 - Applications
NUEVODetector de cromatografía de gases
La mayoría de los documentos de la LITERATURA están disponibles en formato PDF. Necesitará Adobe Acrobat Reader para abrir y leer documentos PDF. Si aún no tiene Acrobat Reader, puede descargarlo gratis en el sitio web de Adobe. Haga clic en el ícono OBTENER ADOBE READER a la izquierda para descargar una copia gratuita de Adobe Acrobat Reader.
PIONA Analysis ASTM D8071
-
The chromatogram below was obtained by a reformulated gasoline sample that contains over 300 individual compounds. This sample was acquired using a 30-meter, non-polar PDMS column with a runtime of 34 minutes. While it is not obvious by looking at the chromatogram, there are several co-eluting compounds that make it difficult to analyze using traditional retention time approaches.
Powerful Deconvolution Function
GC-VUV is a three-dimensional technique, where data is acquired on three axes – time, absorbance, and wavelength. As a result, each compound has a unique spectral shape. Additionally, the individual spectra from compounds in a given class share similar shapes. This is significant because the class-based spectra can be combined to provide accurate class-based analysis that is required for PIONA.
The chromatogram of a reformulated gasoline sample
After VUV Analyze Software completes the carbon number and class categorization of the components within the sample, an automated calculation determines the mass percent and volume percent makeup. The result is a carbon number breakdown table based on compound class.
ASTM D8071 results are presented in an easy-to read table showing carbon number and class breakdown
Aromatics analysis in jet fuels ASTM D8267
This method can be used to quantify total saturates and total aromatics; additionally, monoaromatics and diaromatics are distinguished and quantified.
No sample preparation or system calibration is required for analysis. Samples are characterized in a simple 14-minute run, and fully automated data processing is achieved using spectral matching.
*1. Results are easy to interpret with no room for ambiguity.
*2. Chromatogram overlays are provided for visual distinction of saturate, monoaromatic, and diaromatic content.
*3. Se proporciona información detallada sobre la adquisición para la trazabilidad del análisis.
PAHs, FAME analysis in diesel fuels ASTM D8368
The combustion properties of diesel fuel and the resulting emissions from their consumption is greatly influenced by the percentage of aromatic hydrocarbons that are present in the diesel fuels. As a result, measuring the aromatic content of diesel fuels is important not only to determine the quality of the fuel from a manufacturing standpoint, but also to comply with environmental regulations for air quality and emissions.
While it is important to measure aromatic hydrocarbons, modern diesel fuels are often blended with as much as 20% (B20) biodiesel. As a result, it is also important to measure the fatty acid methyl esters (FAMEs) content to ensure compliance with current diesel fuel specifications.
The VUV Analyzer Platform achieves both qualitative and quantitative analysis of total aromatics, polyaromatic hydrocarbons (PAHs), and fatty acid methyl esters (FAMEs) using a single-injection, automated technique.
Chromatogram of a conventional biodiesel blend with the total aromatic spectral filter applied
Cromatograma de una mezcla de biodiésel convencional con el filtro espectral de EMAG aplicado.
La imagen muestra los espectros de absorbancia VUV de varios EMAG comunes que se encuentran en el combustible diésel.
Results of the diesel analysis using GC-VUV and the Diesel Analyze Application are shown.
All parameters are reported in volume percent and mass percent.
Detailed hydrocarbon analysis of gasoline ASTM D8369
Este es el método de prueba estándar para el análisis detallado de hidrocarburos (DHA) mediante cromatografía de gases de alta resolución con espectroscopia de absorción ultravioleta al vacío (GC-VUV).
La caracterización de las corrientes de hidrocarburos, incluida la especiación y cuantificación, se ha realizado tradicionalmente utilizando DHA por medio de GC-FID. Requiere tiempos de ejecución largos, una separación cromatográfica muy buena y una revisión humana significativa por parte de su usuario más experimentado, el DHA tradicional ha cambiado poco desde que se introdujo por primera vez hace más de 40 años.
The verified hydrocarbon analyzer™ (VHA)™ is a new approach to characterizing hydrocarbon streams at the component level that replaces traditional DHA. VHA is a modern approach to detailed hydrocarbon analysis that uses vacuum ultraviolet spectroscopy and spectral validation to deconvolve and identify critical components – accurately, without the need for human intervention, and in a fraction of the time of traditional DHA.
Pyrolysis oil analysis ASTM D8519
Este es un método de prueba estándar para determinar los tipos de hidrocarburos (saturados, olefinas, estirenos, aromáticos y poliaromáticos) del aceite de desecho de plástico procesado (WPPO) de procesos químicos o térmicos mediante cromatografía de gases y detección por espectroscopia de absorción ultravioleta al vacío (GC-VUV).
Este método está diseñado para determinar con precisión el WPPO producido a partir del reciclaje químico o térmico de residuos plásticos. Con esta técnica, los operadores pueden identificar y cuantificar los hidrocarburos en el aceite de pirólisis de residuos plásticos (WPPO) de una manera más eficiente que nunca.
