Passa al contenuto
Merck
Tutte le immagini(3)

Documenti fondamentali

Visualizza tutta la documentazione

57318

Supelco

Gruppo in fibra SPME carbossene/polidimetilsilossano (CAR/PDMS)

greener alternative

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

Autenticatiper visualizzare i prezzi riservati alla tua organizzazione & contrattuali
Tutte le immagini(3)

About This Item

Codice UNSPSC:
12352200
Prezzi e disponibilità al momento non sono disponibili

Materiali

fused silica fiber
plain black hub

Livello qualitativo

100

Misura ago

24 ga

Confezionamento

pkg of 3 ea

Caratteristiche più verdi

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

sustainability

Greener Alternative Product

df

75 μm (CAR/PDMS)

tecniche

solid phase microextraction (SPME): suitable

Lungh. fibre

1 cm

Gruppo funzionale matrice

CAR/PDMS coating

applicazioni

food and beverages

Compatibilità

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

Categoria alternativa più verde

Aligned,

Cerchi prodotti simili? Visita Guida al confronto tra prodotti

Categorie correlate

Descrizione generale

Ci impegniamo a fornire prodotti verdi alternativi che soddisfino almeno uno dei 12 principi della chimica verde. Questo è un prodotto specifico per la tecnica di microestrazione in fase solida (SPME) La microestrazione in fase solida (SPME) è una delle tecnologie verdi di preparazione del campione per l′analisi, in quanto è una tecnica di estrazione che non richiede solventi e le fibre SPME sono riutilizzabili; in più, produce una quantità minima di scarti e per questo rispecchia i principi “Prevenzione” e “Solventi e ausiliari più sicuri”. Per maggiori informazioni, fate clic qui.
La tecnica di microestrazione in fase solida (SPME) viene generalmente utilizzata per l′analisi GC/MS. Aiuta a semplificare e accelerare la preparazione dei campioni. Inoltre, riduce la necessità di solvente durante l′estrazione.[1]
Per gas e composti a basso peso molecolare (MW 30-225)

Applicazioni

Il gruppo in fibra SPME(CAR/PDMS) è stato utilizzato:
  • per estrarre le sostanze volatili dai flaconi con spazio di testa contenenti campioni di formaggio.[2]
  • per misurare le concentrazioni di solfuro dimetile di Ulva lactuca.[3]
  • nella determinazione delle concentrazioni di 2-eptanone.[4]

Nota a piè di pagina

Questo gruppo in fibra SPME è disponibile anche con nucleo in Nitinol (NIT) con numero di catalogo 57904-U per una migliore riproducibilità e durata delle fibre, una buona selettività per la coerenza del metodo e una buona inerzia del nucleo per assicurare la stabilità degli analiti. Per maggiori informazioni, consultare SigmaAldrich.com/NITSPME .

Applicazioni

N° Catalogo
Descrizione
Determinazione del prezzo

G000507

GC Analysis of Volatiles in Milk (Before and After Exposure to Sunlight) on Supel-Q PLOT after SPME using a 75 μm PDMS/Carboxen Fiber, suitable for GC, application for SPME

96-0327

GC Analysis of Solvents in Water on SPB®-1 SULFUR after SPME using 75 μm Carboxen/PDMS Fiber, suitable for GC, application for SPME

97-0189

GC Analysis of a 7-Component Sulfur Gases Mix on Supel-Q PLOT after SPME using 75 μm Carboxen/PDMS Fiber, suitable for GC, application for SPME

96-0326

GC Analysis of a 6-Component Sulfur Gases Mix on Supel-Q PLOT after SPME using 75 μm Carboxen/PDMS Fiber, suitable for GC, application for SPME

97-0183

GC Analysis of Volatiles on VOCOL® after SPME using 75 μm Carboxen/PDMS Fiber, suitable for GC, application for SPME

97-0191

GC Analysis of Volatiles in White Wine on VOCOL® after SPME using a 75 μm Carboxen/PDMS Fiber, suitable for GC, application for SPME

Codice della classe di stoccaggio

11 - Combustible Solids

Classe di pericolosità dell'acqua (WGK)

WGK 2

Scegli una delle versioni più recenti:

Certificati d'analisi (COA)

Lot/Batch Number

It looks like we've run into a problem, but you can still download Certificates of Analysis from our Documenti section.

Se ti serve aiuto, non esitare a contattarci Servizio Clienti

Possiedi già questo prodotto?

I documenti relativi ai prodotti acquistati recentemente sono disponibili nell’Archivio dei documenti.

Visita l’Archivio dei documenti

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

Protocolli

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.

Chromatograms

suitable for GC, application for SPMEsuitable for GC, application for SPMEsuitable for GC, application for SPMEsuitable for GC, application for SPMEMostra di più

Questions

1–3 of 3 Questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

      Helpful?

  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

      Helpful?

  3. 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.

      Helpful?

Reviews

No rating value

Active Filters

Il team dei nostri ricercatori vanta grande esperienza in tutte le aree della ricerca quali Life Science, scienza dei materiali, sintesi chimica, cromatografia, discipline analitiche, ecc..

Contatta l'Assistenza Tecnica.