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Comparison of MTBSTFA and BSTFA in derivatization reactions of polar compounds prior to GC/MS analysis.
In this study, MTBSTFA and BSTFA, which are among the preferred derivatization reagents for silylation were both tested on derivatization of six different groups of polar chemicals to get informationExpand
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Low-level detections of Sudan I, II, III and IV in spices and Chili-containing foodstuffs using UPLC-ESI-MS/MS.
Sudan dyes are red, synthetic azo dyes that are not allowed in foodstuffs in the European Union (Council Directive 94/36/EC). However, subppm levels of Sudan dye in spices are regularly reported, andExpand
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Determination of polycyclic aromatic hydrocarbons in smoked and non-smoked black teas and tea infusions.
This study describes the occurrence of polycyclic aromatic hydrocarbons (PAHs) in smoked tea and tea infusions, via the monitoring of benzo(a)anthracene, chrysene, benzo(b)fluoranthene andExpand
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Temporal variations of concentrations of currently used pesticides in the atmosphere of Strasbourg, France.
Atmospheric samples have been collected in Strasbourg between April 18 and May 29, 2007 and were analyzed for 71 current-use pesticides, of which 38 were detected. Average concentrations ranged fromExpand
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Multi-class pesticide analysis in human hair by gas chromatography tandem (triple quadrupole) mass spectrometry with solid phase microextraction and liquid injection.
A method for the simultaneous detection and quantification of 22 pesticides from different chemical classes was developed using solid-phase microextraction (SPME) and gas chromatography tandemExpand
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Analysis of phenols and nitrophenols in rainwater collected simultaneously on an urban and rural site in east of France.
The behaviour of phenols and nitrophenols in the atmosphere is of concern for environmental research as these are known to be toxic to humans and wildlife. To increase the knowledge about theseExpand
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Determination of hydroxylated metabolites of polycyclic aromatic hydrocarbons in human hair by gas chromatography-negative chemical ionization mass spectrometry.
The study describes the determination of mono-hydroxylated polycyclic aromatic hydrocarbons (OH-PAHs), metabolites of PAHs, in human hair. Twelve selected OH-PAHs from two to four rings, generallyExpand
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Quantification of Six Phthalates and One Adipate in Luxembourgish Beer Using HS-SPME-GC/MS
A simple, low-cost and sensitive method for the determination of six phthalate acid esters (dimethyl phthalate, diethyl phthalate, dibutyl phthalate, benzyl butyl phthalate, bis(2-ethylhexyl)Expand
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Solid-phase microextraction and gas chromatography–mass spectrometry for analysis of phenols and nitrophenols in rainwater, as their t-butyldimethylsilyl derivatives
Solid-phase microextraction (SPME) coupled with gas chromatography–mass spectrometry has been used for analysis of four phenols and sixteen nitrophenols in rainwater samples. Analytes were extractedExpand
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Determination of the volume of sweat accumulated in a sweat-patch using sodium and potassium as internal reference.
In the present work, we assessed the suitability of sodium and potassium physiologically present in sweat, as internal reference allowing to re-calculate the corresponding volume of sweat collectedExpand
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