نتایج جستجو برای: t tenax
تعداد نتایج: 703471 فیلتر نتایج به سال:
A thermal desorption unit has been interfaced to an electrospray ionization-ion mobility-time-of-flight mass spectrometer. The interface was evaluated using a mixture of six model volatile organic compounds which showed detection limits of <1 ng sample loaded onto a thermal desorption tube packed with Tenax, equivalent to sampled concentrations of 4 microg L(-1). Thermal desorption profiles wer...
A rapid biological method for the determination of the bioavailability of naphthalene was developed and its value as an alternative to extraction-based chemical approaches demonstrated. Genetically engineered whole-cell biosensors are used to determine bioavailable naphthalene and their responses compared with results from Tenax extraction and chemical analysis. Results show a 1:1 correlation b...
The purpose of this study was to describe the circulation of TTV and/or porcine pestivirus in commercial wean-to-finish populations. Oral fluid samples were collected from 10 wean-to-finish sites at 2week intervals from placement (3 weeks of age) to close-out. Testing for porcine pestivirus and TTV using PCR-based assays was performed on these samples. Among the 600 oral fluid samples tested, o...
Per- and polyfluorinated alkyl substances (PFAS) can be found in food contact materials (FCMs). Therefore, migration into occurs contributes to human dietary exposure. Identification minimization of possible exposure-pathways these omnipresent potentially toxic chemicals are important mitigate health risks. Nonetheless, risk assessment procedures mostly limited considering the final PFAS concen...
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