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Supelco

SPME fiber assembly Carboxen/Polydimethylsiloxane (CAR/PDMS)

greener alternative

df 75 μm(CAR/PDMS, for use with manual holder, needle size 24 ga

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About This Item

UNSPSC Code:
12000000
Pricing and availability is not currently available.

material

fused silica fiber
plain black hub

Quality Level

100

needle size

24 ga

packaging

pkg of 3 ea

greener alternative product characteristics

Waste Prevention
Safer Solvents and Auxiliaries
Learn more about the Principles of Green Chemistry.

sustainability

Greener Alternative Product

df

75 μm (CAR/PDMS)

technique(s)

solid phase microextraction (SPME): suitable

fiber L

1 cm

matrix active group

CAR/PDMS coating

application(s)

food and beverages

compatibility

(For gasses and low molecular weight compounds (MW 30 - 225).)
for use with manual holder

greener alternative category

Aligned,

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General description

For Gases and Low Molecular Weight Compounds (MW 30-225)
Solid phase microextraction (SPME) technique is generally used for GC/MS analysis. It helps in simplifying and speeding up the sample preparation. It also reduces solvent requirement during extraction.[1]
We are committed to bringing you greener alternative products, which adhere to one or more of The 12 Principles of Greener Chemistry. This is a Solid Phase Microextraction (SPME) technology product. SPME is one of the greener technologies for sample preparation as it is solvent free extraction technology and SPME fibres are re-usable and generates as little waste as possible, thus aligns with "Waste Prevention”, and ″Safer Solvents and Auxiliaries″. Click here for more information.

Application

SPME fiber assembly (CAR/PDMS) was used:
  • to extract volatiles from headspace vial of cheese samples.[2]
  • to measure dimethyl sulphide concentrations of Ulva lactuca.[3]
  • in determination of 2-Heptanone concentrations.[4]

Footnote

This SPME fiber assembly is also available with a Nitinol (NIT) core as Cat. No. 57904-U, providing enhanced fiber reproducibility, greater fiber durability, maintained selectivity for method consistency, and core inertness to ensure analyte stability. See more at SigmaAldrich.com/NITSPME .

Storage Class Code

11 - Combustible Solids

WGK

WGK 2

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Certificates of Analysis (COA)

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Talon, R., Montel, M.
Applied SPME, 364-371 (1999)
Pawliszyn, Janusz
Applications of Solid Phase Microextraction, 674-674 (1999)
Pawliszyn, Janusz
Handbook of Solid Phase Microextraction, 410-410 (2009)
Pawliszyn, Janusz
Solid Phase Microextraction: Theory and Practice, 264-264 (1997)
Sue Ann Scheppers Wercinski
Solid Phase Microextraction: A Practical Guide, 257-257 (1999)
View All Related Papers

Protocols

Clinical Application of SPME: Analysis of VOCs in Exhaled Breath as Cancer Biomarkers

This report demonstrates the potential of solid phase microextraction as a clinical research tool for the extraction of VOCs associated with lung cancer from human breath.

Analysis of Residual Solvents in Hemp Extracts

SPME enables rapid, sensitive GC/MS analysis of residual solvents in hemp extract, ensuring accuracy and efficiency.

Analysis of Residual Solvents in Hemp Extracts

SPME enables rapid, sensitive GC/MS analysis of residual solvents in hemp extract, ensuring accuracy and efficiency.

Analysis of Residual Solvents in Hemp Extracts

SPME enables rapid, sensitive GC/MS analysis of residual solvents in hemp extract, ensuring accuracy and efficiency.

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Chromatograms

suitable for GC, application for SPMEsuitable for GC, application for SPMEsuitable for GC, application for SPMEsuitable for GC, application for SPMEShow More

Questions

  1. Is CAR/PDMS recommended for benzene detection? SPME fiber assembly Carboxen/Polydimethylsiloxane (CAR/PDMS) is being used to detect benzene. However, there is significant peak tailing for the benzene chromatography peak. The GCMS method is optimized for benzene, and other injection methods do not show tailing. Additionally, the GC inlet, column, and all other GCMS parts are clean and calibrated.

    1 answer

    1. The Carboxen-PDMS fiber is a bi-polar fiber, possessing both adsorption and absorption mechanisms. While benzene falls within the molecular weight range of the fiber, overload can result in peak tailing. The linear range for C2-C10 hydrocarbons of this fiber is approximately 10ppb-10PPM.

      To address this, it is advisable to increase the temperature of the injection port (i.e., 290-300 oC) to enhance the desorption of benzene from the fiber, thereby improving the peak shape. Furthermore, consider using a different column type that can withstand higher temperatures than a 624 phase, allowing the inlet temperature to be raised to more effectively drive benzene off the fiber.

      To optimize the sample preparation process, it is recommended to use salt (i.e., 0.5 -1 g NaCl) to increase the analyte in the Headspace (HS). Additionally, using an Inlet Liner, Direct (SPME) Type, Straight Design (unpacked) can also improve peak shape.

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