Search results - 76 results
Simultaneous determination of parabens, bisphenols and alkylphenols in human placenta by ultra-high performance liquid chromatography-tandem mass spectrometry
negative electrospray ionization. Labeled internal standards and matrix-matched calibration are used for quantification of the compounds. The method was validated according FDA guideline for bio analytical ...
Development of a sample preparation method for the GC-analysis of e-cigarette refill liquids
techniques can also be used with other GC-injection techniques. Both methodologies were further optimized and validated for quantification of the target components using matrix-matched calibration The sample ...
DETERMINATION OF ALLERGENIC FRAGRANCE INGREDIENTS IN FEMININE ABSORBENT HYGIENE PRODUCTS AND LUBRICANTS
matrix-effect in AHP s was reduced with the use of 1-fluoronapthalene as an internal standard (IS) and matrix-matched calibration for quantification purposes. A relative bias was set at 15%, that was met by each ...
Simultaneous determination of parabens, bisphenols and alkylphenols in human placenta by ultra-high performance liquid chromatography- tandem mass spectrometry
negative electrospray ionization. Labeled internal standards and matrix-matched calibration are used for quantification of the compounds. The method was validated according FDA guideline for bio analytical ...
Strong increase of true and false positive mycobacterial cultures sent to the National Reference Centre in Belgium, 2007 to 2016.
at the NRC, highlighting the importance of sample decontamination/transport and equipment calibration in peripheral laboratories. Health Topics: Tuberculosis Tuberculose Tuberculose Manuscript ...
Towards the use of ion mobility mass spectrometry derived collision cross section as a screening approach for unambiguous identification of targeted pesticides in food
mode. An in‐house library containing 200 pesticides was built using standard solutions and used as reference for a TWCCS calibration study. Matrix extracts were analyzed to evaluate the performance of ...
Screening for nanoparticles in complex matrices within a regulatory framework: are we there yet?
microwave digestion was hampered by matrix effects, but could be solved by internal calibration. The applied methodology was able to demonstrate the presence of silver nanoparticles in E174 and confectionery ...
Heat and health in Antwerp under climate change: Projected impacts and implications for prevention.
a changing climate, and the calibration of existing prevention activities in light of locally relevant evidence. Health Topics: Health and environment Santé et environnement Gezondheid en milieu Service: ...
Improved Metrological Traceability of Particle Size Values Measured with Line-Start Incremental Centrifugal Liquid Sedimentation.
Because several of the input quantities of the Stokes equation cannot be easily determined for this case of a rotating disc, the disc- CLS approach relies on calibrating the sedimentation time scale with ...
Collaborative study for the establishment of the WHO 3rd international standard for Endotoxin, the Ph. Eur. endotoxin biological reference preparation batch 5 and the USP Reference Standard for Endotoxin Lot H0K354
compendial methods was evaluated. Their potency was calibrated against theWHO 2nd IS for Endotoxin (9⅘80). Gelation and photometric methods produced similar results for each of the candidate preparations. The ...