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Key Documents

SU860097

Supelco

Headspace vial, screw top, rounded bottom (vial only)

volume 20 mL, clear glass vial, thread for 18, O.D. × H 22.5 mm × 75.5 mm, pkg of 100 ea

Sinônimo(s):

Screw cap rounded bottom headspace vial

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About This Item

Código UNSPSC:
41122001
NACRES:
NB.11

Materiais

clear glass vial
round bottom

Características

closure type screw top vial

embalagem

pkg of 100 ea

D.E. × A

22.5 mm × 75.5 mm

volume

20 mL

conector

thread for 18

compatibilidade

for use with CTC PAL (Varian, Gerstel, Atas, Shimadzu)

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Descrição geral

These vials require a special cap with an 18 mm thread. The standard 18-400 threaded caps will not fit this vial. The part numbers for caps that are available for these vials are SU860101(with PTFE/silicone, 1.3 mm thick), SU860102 (with PTFE/butyl, 1.6 mm thick), and SU860103 (with PTFE/silicone, 1.5 mm thick). These caps are made from stainless steel and are magnetic.

Aplicação

Headspace vial may be used for the following:
  • In the determination of partition coefficient of ethyl acetate in water at 0° C from independent analyses of the total amount of ethyl acetate present in the vial, by automatic equilibrium headspace gas chromatography and vapor phase calibration (VPC).
  • It may be used in the analysis of volatile polar residual solvents present in pharmaceutical products, during development and optimisation of headspace SPME method by GC-MS.
  • It may also be used in the isotopic analysis of 18O in the leaf water of C3 and C4 grasses, during establishing a grassland signature in veins, as it was found that grasses with different photosynthetic pathway have different interveinal differences.
  • It may also find application, in investigating metabolism by Pseudomonas fluorescens of volatile haloaliphatic hydrocarbons like 1,2-dichloroethane and 1,2-dichloropropane, which are some of the major contaminants of underground aquifers.

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B R Helliker et al.
Proceedings of the National Academy of Sciences of the United States of America, 97(14), 7894-7898 (2000-07-08)
We show that 18O evaporative enrichment of bulk leaf water in grass species can be significantly more enriched than predicted by the Craig-Gordon model, with C4 grasses considerably more enriched than C3 grasses. Our results suggest that the unanticipated 18O
Determination of partition coefficients by automatic equilibrium headspace gas chromatography by vapor phase calibration.
Welter KBC and Bichler C.
Chromatographia, 34 (5-8), 235-240 (1992)
P A Vandenbergh et al.
Applied and environmental microbiology, 54(10), 2578-2579 (1988-10-01)
A Pseudomonas fluorescens strain designated PFL12 was isolated from soil and water that were contaminated with various chloroaliphatic hydrocarbons. The isolate was able to metabolize 1,2-dichloroethane, 1,1,2-trichloroethane, 1,2-dichloropropane, 2,2-dichloropropane, and trichloroethylene.
C C Camarasu
Journal of pharmaceutical and biomedical analysis, 23(1), 197-210 (2000-07-18)
A solid-phase microextraction (SPME) method has been developed and optimized for the polar residual solvent determination in pharmaceutical products. Five different polymer-coated fibers were investigated and the Carboxen/polydimethylsiloxane was found to be the most sensitive for all components. Two Headspace

Protocolos

Determinação aprimorada de compostos orgânicos voláteis na água por SPME e GC/MS: Norma ISO 17943

O alto desempenho, a confiabilidade e a reprodutibilidade da HS-SPME em conjunto com GC/MS para a determinação de VOCs na água foram comprovados em um teste interlaboratorial. A nova ISO 17943, que usa HS-SPME, é um avanço em relação aos métodos oficiais já existentes para essa determinação em termos de sensibilidade e seletividade.

Improved Determination of Volatile Organic Compounds in Water by SPME and GC/MS: ISO Standard 17943

High performance, reliability, and reproducibility of HS-SPME in combination with GC/MS for the determination of VOCs in water was proven in an interlaboratory trial. The new ISO 17943 using HS-SPME is an improvement on existing official methods for this determination in terms of sensitivity and selectivity.

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