Zoekresultaten - 20 results
Multi-dye residue analysis of triarylmethane, xanthene, phenothiazine and phenoxazine dyes in fish tissues by ultra-performance liquid chromatography-tandem mass spectrometry.
antiseptic and antibacterial activity. In this contribution, a new sensitive multi-residue method was developed to determine triarylmethane, xanthene, phenothiazine and phenoxazine dyes in fish by ...
Characterization of suspected illegal skin whitening cosmetics.
EU market. A newly developed screening method using ultra high performance liquid chromatography-time off flight-mass spectrometry allows routine analysis of suspected products. 163 suspected skin ...
Estimation of dietary aluminum exposure of the Belgian adult population: evaluation of contribution of food and kitchenware.
on 552 pooled samples. The estimated usual daily intake of Al was calculated with the Nusser method, and amounted to 0.030mg/kg bodyweight bw/day, or 21% of the Provisional Tolerable Weekly Intake ...
On-line solid-phase extraction with ultra performance liquid chromatography and tandem mass spectrometry for the detection of nicotine, cotinine and trans-3'-hydroxycotinine in urine to strengthen human biomonitoring and smoking cessation studies.
method (10min) was assessed for three concentration levels and were found to be less than 8% for each analyte while the accuracy was between 89 and 113%. To further improve the sensitivity of this approach ...
Prevalence and levels of Bacillus cereus emetic toxin in rice dishes randomly collected from restaurants and comparison with the levels measured in a recent foodborne outbreak.
dishes collected from various restaurants was therefore evaluated using the liquid chromatography coupled with tandem mass spectrometry method, which allows for the direct quantification of the toxin in ...
Dietary intake of artificial sweeteners by the Belgian population.
for cyclamate, 17% for saccharin, and 16% for sucralose of the respective ADI s. Assessment of intake using a Tier 3 approach was preceded by optimisation and validation of an analytical method based on ...
Follow-up of the Bacillus cereus emetic toxin production in penne pasta under household conditions using liquid chromatography coupled with mass spectrometry.
quantified by LC- MS method (LOD of 1 ng/ml, LOQ of 5 ng/ml) and growth was determined by culture-based enumeration. Inoculated B. cereus strains (10(5) CFU /g) were able to reach counts of more than 10(8) CFU ...
A rapid and environmental friendly determination of the dithiocarbamate metabolites ethylenethiourea and propylenethiourea in fruit and vegetables by ultra high performance liquid chromatography tandem mass spectrometry.
Thiocarbamates Thiourea Vegetables Abstract: Previous published methods for the analysis of ETU and PTU are time-consuming and furthermore use dichloromethane (DCM) for extraction or clean-up. This study details ...
A modified sample preparation for acrylamide determination in cocoa and coffee products
methods, Volume 1, Issue 1, Number 55, p.49- 55 (2008) ISBN: 1936-9751 Keywords: Acrylamide Analyses AS Clean up Cocoa Combination Complex Matrices detection i identification Ion IS Laboratories LC-MS/MS ...
Determination of acrylamide levels in selected foods in Brazil
food Foods foodstuffs Laboratories LC-MS/MS LEVEL levels Limit of Detection Liquid chromatography-tandem mass spectrometry Mass Mass Spectrometry method ON Potato Potato products PRODUCTS result results ...