EFFECT OF CARRIER GAS FLOW RATE AND COLUMN TEMPERATURE ON THE SUITABILITY PARAMETERS OF GC-ECD FOR SF6 MEASUREMENT
Journal Title: Periódico Tchê Química - Year 2017, Vol 14, Issue 28
Abstract
System suitability testing of a GC is essential to verify its suitability for intended application. The GC always uses a carrier gas and column temperature, which may impact on its suitability parameters. This study is aimed to evaluate the effects of carrier gas flow rate (FLRT) and column temperature (CLTP) on the system suitability parameters (SSP) of GC-ECD for SF6 measurement such as retention time/tR, response factor/RF, theoretical plate numbers/N, and asymmetric factor/As. The evaluation was conducted by carefully profiling the SF6 chromatogram and the data obtained were used to calculate the tR, RF, N, and As values. It was found that the tR increases linearly (R2 = 0.9978) by increasing the FLRT, but decreases linearly (R2 = 0.9991) by increasing the CLTP. The RF decreases linearly (R2=0.9939) by increasing the FLRT. Interestingly, the RF was affected by the CLTP with 2nd polynomial order trend (R2=0.9949). The N increases linearly (R2 = 0.9404) by increasing the FLRT but the N was affected by the CLTP with 2nd polynomial order trend (R2 = 0.9769). The As was found to increase slightly with FLRT (R2 = 0.1288), while the As was affected by the CT with 2nd polynomial order trend (R2 = 0.9778). These results are in a good agreement with previous SSP studies.
CONFORMATIONAL STABILITY ORDER OF ACYCLIC ORGANIC MOLECULES REVISITED: A COMPUTER-BASED PROJECT IN LEARNING STEREOCHEMISTRY
Learning stereochemistry today, especially on the topic of conformational stability, seems to generalize anti, gauche, eclipsed conformations as a general stability order for all acyclic organic molecules. This may be du...
RATIONALE FOR WATER SOIL WASHING TECHNOLOGIES BY GROWTH REGULATION
When irrigation of land in the arid zone, one of the mandatory elements for maintaining the water-salt balance is soil washing. At present, washing standards are calculated and recommended for different soils. However, t...
ELABORATION OF A GUIDE FOR COMPONENTS’ RECOVERY OF USED batteries: A PROJECT WITH ENVIRONMENTAL CONSCIOUSNESS AND POSSIBILITY OF EXPLORATION OF SCIENTIFIC CONCEPTS IN THE STATE OF TOCANTINS
Batteries are electrochemical devices widely used in the modern world. However, its disposal cannot be done in ordinary waste due to the characteristics of corrosiveness, toxicity, and reactivity. Although there are laws...
PREPARATION OF A DEGRADABLE HYDROCOLOID FILM WITH SILVER NANOPARTICLES SYNTHETIZED WITH AQUEOUS GARLIC EXTRACT (Allium sativum)
The green synthesis of silver nanoparticles aims to synergistically bind bactericidal properties of the element with the chemical composition of plant extracts and potentially use them in biodegradable plastic substitute...
STUDY ON METHODS OF DETERMINATION OF AN ECOLOGICAL FLOW FOR THE MANAGEMENT OF WATER RESOURCES OF THE RIVER BASIN ON MARACAÇUMÉ RIVER
The elaboration of a study on methods for the determination of ecological flow for the management of the water resources of the Maracaçumé River Basin is very important for the proposed use and conservation of these reso...