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Instrument
: GERSTEL TwisterSocial Links
Search: GERSTEL Twister
Results 1 - 10 of 21
Results
- Quantification of Volatiles in Mammalian Urine by Stir Bar Sorptive Extraction (SBSE) Techniques and Gas Chromatography
Stir Bar Sorptive Extraction (SBSE) has been found as a successful extraction method for profiling volatile and semivolatile putative chemosignaling compounds in hamster and mouse urine. When combined with an ...
Resource - Susan Gilbert - 13th Apr 2011 - 0 comments
- Multi-Residue Method for Determination of 85 Pesticides in Vegetables, Fruits and Green Tea by Stir Bar Sorptive Extraction and Thermal Desorption GC-MS
A multi-residue method to determine five groups of 85 pesticides – chlorinated, carbamate, phosphorous, pyrethroid and others – in vegetables, fruits and green tea has been developed using stir bar sorptive e ...
Resource - Susan Gilbert - 13th Apr 2011 - 0 comments
- Sorptive Extraction – Thermal Desorption – CGC-MS A Versatile Method to Monitor 440 Pesticides in Fruits, Vegetables and Beverages
More than 600 pesticides are currently used and can be present as contaminant: apolar – medium polar – polar – ionic – thermostable – thermolabile. Download file ...
Resource - Susan Gilbert - 13th Apr 2011 - 0 comments
- Determination of Air Freshener Fragrance Components using Adsorbent Tubes and Gerstel TSD2/TDSA
Customer is interested in automated air sampling with Tenax TA adsorbent tubes to collect 5-minute time points to profile the fragrance from room air fresheners, followed by automated Thermal Desorption for G ...
Resource - Susan Gilbert - 31st Mar 2011 - 0 comments
- Analysis of Trace Components in Urine Utilizing Twister SBSE & TDS2/TDSA Thermal Desorption
Customer is interested in Twister SBSE & TDS2/TDSA thermal desorption for the analysis of trace components in urine. Samples were prepared by the customer as follows: 2mls of urine was adjusted to pH 2.1 ...
Resource - Susan Gilbert - 26th Jan 2011 - 0 comments
- Cross Contamination in Commercial Herbicides/Pesticides
There is a need to monitor cross contamination at the 1ppm level in commercial herbicides and pesticides. The presence of 1-50% active ingredient, surfactants, antifoam and other formulation components makes ...
Resource - Susan Gilbert - 26th Jan 2011 - 0 comments
- Fragrance Components in Shampoo and Candle Wax
Fragrance blends may be used in a variety of sample matrices that can affect the recovery of the individual components. Customer is interested in extraction and separation of a test fragrance blend from candl ...
Resource - Susan Gilbert - 26th Jan 2011 - 0 comments
- SBSE of Components in Mock Lemon Emulsion
Flavor components of carbonated soft drinks are prepared and added as concentrated emulsions. To verify the composition of the emulsion, samples are diluted with polar solvents followed by GC separation. Som ...
Resource - Susan Gilbert - 26th Jan 2011 - 0 comments
- SBSE of Components in Orange Carbonated Soft Drink
Components in carbonated soft drinks are normally extracted by liquid-liquid extraction with hexane:methylene chloride prior to gas chromatographic analysis. The presence of benzoate and sugar can cause probl ...
Resource - Susan Gilbert - 26th Jan 2011 - 0 comments
- SBSE of Trace Volatiles in Bottled Water
Purge & trap GC is normally used to do trace volatile analysis in bottled water. Compounds of interest include C4-C13 straight-chain aldehydes, ketones and acids. Interested in simplifying sample preparat ...
Resource - Susan Gilbert - 26th Jan 2011 - 0 comments