𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The influence of the syringe needle on the precision and accuracy of vaporizing GC injections

✍ Scribed by Grob, K. ;Neukom, H. P.

Publisher
John Wiley and Sons
Year
1979
Tongue
English
Weight
656 KB
Volume
2
Category
Article
ISSN
0935-6304

No coin nor oath required. For personal study only.

✦ Synopsis

The discrimination of the high boiling componentsof a C9 to C44 alkane test mixture in a vaporizing injector (analysed with stream splitting on a capillary column) is mainly due to a selective elution of the sample out of the syringe needle. Different methods of handling the syringe needle are tested. The discrimination is quantitated and correlated with the material left in the needle. The poorest method of injection was found to retain the sample in the needle when the latter is introduced into the vaporizer. The sample should be pulled back into the barrel of the syringe and the needle allowed to warm up in the injector before the sample is transferred into it. The solvent flush technique may be preferred for components sensitive to the hot metal surface of the needle.

πŸ“œ SIMILAR VOLUMES

The influence of evaporative dynamics on
The influence of evaporative dynamics on precision in split capillary GC
✍ Bowermaster, J. πŸ“‚ Article πŸ“… 1988 πŸ› John Wiley and Sons 🌐 English βš– 573 KB

The kineticsof sample evaporation wasstudied for four common injection liners at various temperatures.The ratesof solvent and sample evaporation were measured. The sample distribution at the split point was probed by inserting two capillary columns in one injector. Greater homogeneity at the split p

The influence of calculated phase shifts
The influence of calculated phase shifts on the precision and accuracy of ARPEFS-derived structural parameters
✍ Y. Zheng; Z. Hussain; D.A. Shirley πŸ“‚ Article πŸ“… 1993 πŸ› Elsevier Science 🌐 English βš– 461 KB

The influence of theoretical atomic scattering phase shifts calculated by different methods in the analysis of angle-resolved photoemission extended tine structure (ARPEFS) data for structural determination of the c(2 X 2)S/Ni(COl) surface was examined, with the goal of assessing both the precision

Factors influencing the accuracy and pre
Factors influencing the accuracy and precision of velocity-encoded phase imaging
✍ Michael H. Buonocore; Hugo Bogren πŸ“‚ Article πŸ“… 1992 πŸ› John Wiley and Sons 🌐 English βš– 912 KB

## Abstract Velocity‐encoded phase contrast imaging is being used increasingly in clinical imaging for quantization of blood flow. In this study, the accuracy and precision of ascending aorta flow measurements were found to depend on several subtle aspects of the scan prescription and image analysi