Nuestra comunidad de alimentos y bebidas presenta información útil para las tareas diarias de los profesionales encargados de ofrecer alimentos y bebidas bajo los máximos estándares de calidad. Aquí encontrarán a su disposición los más novedosos recursos técnicos, enfocados a la obtención de la máxima seguridad y calidad de los alimentos.
Nuestra comunidad de medicina forense, brinda recursos técnicos para que los profesionales del área forense, puedan llevar a cabo sus tareas analíticas con mayor facilidad y seguridad. Para ello, ponemos a su disposición los últimos desarrollos analíticos.
Nuestra comunidad de producción industrial, se caracteriza por brindar soporte a aquellas personas que trabajan en la producción de químicos, plásticos y metales, así también como la producción minera. Aquí encontrarán recursos técnicos para poder llevar a cabo sus acciones diarias de la forma más eficaz, generando así productos de mejor calidad y con menores costos en el proceso.
Nuestra comunidad de investigación en ciencias de la vida, se centra en brindar apoyo a los profesionales de esta área, para que puedan desarrollar a través de nuestros recursos técnicos, nuevas y más eficientes formas de investigación y análisis con las herramientas tecnológicas actuales.
En nuestra comunidad de medio ambiente encontrarán las últimas técnicas, en forma de webinars y notas de aplicación, para colaborar en la preservación de los recursos naturales de nuestro planeta. También podrán encontrar equipos y consumibles imprescindibles para mejorar el desempeño de los profesionales abocados a esta área.
En nuestra comunidad dedicada al sector farmacéutio y Bio-Farmacéutico, encontraran una selección de artículos y webinars destinados a enriquecer la labor diaria de los profesionales de éste área. Asimismo también encontrarán las últimas tecnologías en equipos y consumibles enfocados en el área farmacéutica para realizar sus tareas de la mejor forma posible.
TraceGOLD Fast GC Columns
GC chemists are continually striving to reduce analysis times to increase sample throughput. TraceGOLD Fast GC columns are shorter, smaller ID columns compared with conventional GC columns. This means that analysis times can be reduced.
Faster analysis with the same separation
Analysis times can be decreased by using the following:
• Shorter columns
• Quicker oven temperature ramp rate
• Higher carrier gas linear velocity
These changes also decrease resolution – however, this can be offset by the following:
• Narrow ID columns
• Hydrogen as a carrier gas
• Small film thickness
When decreasing column length and ID, it is important to maintain the phase ratio between your conventional column and fast GC column. Using the table below will help to ensure the correct dimensions of column are selected:
Phase Ratio
Phase Ratio is the ratio of the volume of mobile phase to the stationary phase. It is an important value when changing the column dimensions in a method:
Phase Ratio (β) – column ID (μm) / 4 x fi lm thickness (μm)
A 0.25mm x 0.25μm GC column has the same phase ratio as a 0.15mm x 0.15μm column, so will show the same selectivity provided the column stationary phase is kept the same. However, the effi ciency on the 0.15mm ID column will be greater, allowing for a similar separation to be performed with a shorter column length.
The performance of a 30m x 0.25mm x 0.25μm column can therefore be achieved with a 20m x 0.15mm x 0.15μm column in up to 30% less time.
TraceGOLD Fast GC Columns
Faster analysis with the same separation
Selection of the most appropriate TraceGOLD Fast GC column will ensure that column performance and separation is maintained while decreasing analysis time.
Benefi ts of faster analysis:
• Increase speed of analysis by a factor of 3-10 times
• Faster method development
• Reduction in analysis costs
• Run any application with no compromise in the quality of results
Easy optimization of conventional methods
TraceGOLD Fast GC columns can be applied to any application in any industry. Conventional GC methods can easily be transferred to Fast GC columns without compromising performance, through consideration of the following parameters:
• Column length
• Column ID
• Column fi lm thickness
• Carrier gas linear velocity
A reduction in column length will increase speed of analysis, but will lead to a decrease in resolution. This decrease can be offset by a decrease in column ID.
The table below shows approximate column dimensions that can be replaced with a TraceGOLD Fast GC column in order to achieve faster GC analysis. The ratio of column length to ID and phase ration are kept the same, provided the carrier gas fl ow rate and fast oven ramp rate are adjusted to give similar performance.
TraceGOLD Fast GC Columns
The applications below demonstrate how TraceGOLD Fast GC columns can speed up analysis without compromising results.
Fast Analysis of Organochlorine Pesticides using TraceGOLD TG-5SilMS
The analysis time decreased by 30% on the Fast GC column (II) compared with the standard column (I) with a minimal reduction in resolution of approximately 4%.Method (II) was then further modifi ed by increasing the linear velocity by approximately 40-50% to give the faster method (III). The analysis time was reduced by approximately 50% of the original method (I) with a slight increase in resolution of about 7%.
TraceGOLD Fast GC Columns
Fast Analysis of FAMEs using TraceGOLD TG-WaxMS
The analysis time decreased by 30% on the Fast GC column (II) compared with the standard column (I) with an increase in resolution of approximately 7%. Method (II) was then further modifi ed by increasing the linear velocity by approximately 40-50% to give the faster method (III). The analysis time was reduced by approximately 50% of the original method (I) with no change in resolution.
