Part No: AN703Issued year: 2011File size: 0.04mbFile type: pdf
ISOLUTE EPH SPE columns and associated methodologies have been optimised to efficiently fractionate EPHs into aliphatic and polycyclic aromatic (PAH) fractions. The principle is similar to the approach taken by the Massachusetts Department of Environmental Protection (MADEP) and TPH criteria working group (TPHCWG) methods. However, compared to these methods, the ISOLUTE EPH fractionation column has been significantly reduced in size and the sorbent has been optimised in order to reduce solvent volumes and provide an automation compatible fractionation column. Automation of the fractionation process has been achieved without carryover of PAHs into the aliphatic fraction.
Environmental contamination, ISOLUTE, PAH, Polyaromatic hydrocarbons, soil,
Part No: P163Issued year: 2017File size: 0.58mbFile type: pdf
Over the past decade, the need for non-invasive drug screening that that precludes sample adulteration has become attractive. As a result, detection using oral fluid devices for Drugs of Abuse (DOA) has come to the vanguard of the scientific community. The use of Supported Liquid Extraction (ISOLUTE® SLE+) prior to LC/MS or GC/MS can improve sample cleanliness without forfeiting sample detection within a diverse panel of DOAs. Here, we demonstrate the effects of altering elution solvent polarity and pH for sample pretreatment upon the simultaneous recovery of 34 compounds comprised of opioids, benzodiazepines, and stimulants to directly measure the effects of the oral fluid buffer, OraSure™, upon extraction and signal intensity at presumed LOQs.
Part No: AN100Issued year: 2015File size: 0.16mbFile type: pdf
Biotage® Endeavor™ catalyst screening system was used to investigate the asymmetric hydrogenation of 4-aryl coumarins to 4-aryl-3,4-dihydrocoumarin, an important intermediate in the synthesis of endothelin receptor antagonists.
Part No: TN-0006.0506Issued year: 2006File size: 0.1mbFile type: pdf
The Atlantis pressure scale-up workstation performs and optimizes gas/liq and gas/liq/solid, heterogeneous reactions with the unique ability to monitor live gas consumption. Process
Chemists can easily load experiments with push-button hardware and precisely control and monitor reactions with simple-to-use software. The Atlantis system controls reaction parameters
automatically to eliminate sample degradation and in addition, provides concise reaction data reports with live molar uptake rates for better analysis.
Part No: AN893Issued year: 2018File size: 0.91mbFile type: pdf
This application note describes the fully automated extraction of carboxy-THC from urine, following base hydrolysis prior to GC/MS analysis. The method was automated using Biotage® ExtraheraTM, configured for use with EVOLUTE EXPRESS ABN columns.
The method delivers clean extracts and analyte recovery of 90% with RSD lower than 10% for carboxy-THC and its deuterated internal standard. Using the Biotage® ExtraheraTM, 24 samples were extracted in approximately 38 minutes. The limit of quantitation of 2 ng/mL is below the SAMHSA/ EWDTS confirmation cut off of 15 ng/mL for workplace testing applications.
Part No: AN892Issued year: 2018File size: 0.86mbFile type: pdf
This application note describes the fully automated extraction of carboxy-THC from urine, following base hydrolysis prior to GC/MS analysis. The method was automated using Biotage® ExtraheraTM, configured for use with ISOLUTE SLE+ columns.
The simple sample preparation procedure delivers clean extracts and analyte recoveries greater than 80% with RSDs lower than 10% for carboxy-THC and its deuterated internal standard. Using Biotage Extrahera, 24 samples are extracted in approximately 35 minutes. Limit of quantitation is below the SAMHSA/EWDTS confirmation cut off of 15 ng/mL for workplace testing applications.
Part No: AN793Issued year: 2013File size: 2.04mbFile type: pdf
This application note describes the extraction of a range of SPICE drugs and metabolites in urine which are
typically screened in forensic toxicology panels using ISOLUTE® SLE+ in a 96-well plate format. Both manual
(Biotage Pressure+ 96) and automated (TECAN Freedom EVO® 100) processing conditions are described.
Part No: AN877Issued year: 2017File size: 2.61mbFile type: pdf
This application note describes the operating conditions for the automated fractionation of Extractable Petroleum hydrocarbons (EPH) into aliphatic and aromatic (PAH) fractions using the ISOLUTE EPH SPE column in conjunction with the Extrahera automation system.
Part No: Issued year: File size: 1.03mbFile type: pdf
• Solid-phase peptide synthesis (SPPS) is still often faced with challenges in the assembly of long and ‘difficult’ sequences, e.g. due to aggregation and steric hindrance giving rise to incomplete reactions. These problems have only partly been solved by new coupling reagents and solid supports.
• Precise microwave heating has emerged as one new parameter for SPPS, in addition to coupling
reagents, resins, solvents etc.
Part No: Issued year: File size: 0.13mbFile type: pdf
• Solid-phase peptide synthesis (SPPS) is still often
faced with challenges in the assembly of long and
‘difficult’ sequences, e.g. due to aggregation and
steric hindrance giving rise to incomplete reactions.
These problems have only partly been solved by
new coupling reagents and solid supports.
• Precise microwave heating has emerged as one
new parameter for SPPS, in addition to coupling
reagents, resins, solvents etc.
Part No: AN909.V.1Issued year: 2014File size: 1.37mbFile type: pdf
Cyclosporine is an immunosuppressant used in organ transplants to overcome rejection. Following the transplant of a heart, liver, kidney or lung, a patient must be regularly tested for the rest of their lives. Blood testing intervals vary from 1 month to 6 months and this rapid reference method is ideal for batch tests with the advantage of no metabolite interfer-ence which is always found in immunological methods.
Part No: AN908.V.1Issued year: 2014File size: 1.33mbFile type: pdf
The removal of interferences and sample concentration are
essential steps in trace level detection of pesticides, sheep
dips, herbicides and PCBs in river water, wastewaters and
trade effluents. The following methods were developed by
the Environment Agency National Laboratory Service facility
at Nottingham using the Biotage RapidTrace for automated
solid phase extraction and the TurboVap II for evaporation.
The procedures are UKAS accredited and can reach detection
limits of 0.001 ug/Litre for some compounds.
Part No: AN904.V1Issued year: 2014File size: 1.33mbFile type: pdf
EPA methods 8260 & 8270 cover the analysis of polychlorinated
dibenzo-p-dioxins and polychlorinated dibenzofurans
in ground & surface waters. This also now includes
1,4-dioxane and PCBs. This application note will focus on
the automated SPE of the sample rather than the detection
which usually involves GCMS or LCMS. NB The columns
and reagents used for soils and sediment analysis differ to
ground water extraction.
Part No: AN905Issued year: 2010File size: 0.25mbFile type: pdf
The extraction and segregation of Organic compounds from core samples taken from marine sediments is used to predict climate conditions, reconstruct sea temperatures and identify the type of vegetation from the C3 ( Temperate cli-mate) and C4 ( Tropical Climate) isotopic mass spectroscopy ratio analysis.