Essays about: "perfluoroalkyl acids"
Showing result 6 - 10 of 19 essays containing the words perfluoroalkyl acids.
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6. Evaluation of per and polyfluoroalkyl substances (PFASs) and extractable organic fluorine (EOF) in composite wastewater samples from a hazardous waste management facility
University essay from Örebro universitet/Institutionen för naturvetenskap och teknikAbstract : Per- and polyfluoroalkyl substances (PFASs) have been used broadly in industries, firefighting foams, surfactant materials and consumer products. These compounds are very resistant to degradation in the environment and high exposure to these compounds may cause health issues such as cancer and immunosuppression. READ MORE
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7. Effects of a phthalate mixture on Wnt/β-catenin signaling, apoptosis and metabolic rate in zebrafish embryos
University essay from Uppsala universitet/Institutionen för biologisk grundutbildningAbstract : One of the most common plasticizers used in the production of plastic are phthalates. These chemicals have been associated with many adverse effects including developmental and reproductive anomalies. Early developmental processes targeted by chemicals can have long-lasting effects on individuals. READ MORE
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8. Trace level analyses of selected perfluoroalkyl substancesin food: Method development and validation
University essay from Örebro universitet/Institutionen för naturvetenskap och teknikAbstract : To comprise the future requirements to detect low levels of perfluoroalkane acids, includingbranched and linear perfluorooctane sulfonic acid (PFOS), perfluorooctanoic acid (PFOA),and perfluorohexane sulfonic acid (PFHxS) in food items, here analytical methods fordetermination of PFOS, PFOA and PFHxS in six different food matrices (cow milk, butter,chicken egg, chicken meat, beef, and fish) were optimized and validated. The optimizedmethod was based on alkaline digestion and solid-liquid extraction using acetonitrile,followed by solid phase extraction (SPE) using a weak anion exchange cartridge as clean-up. READ MORE
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9. Determinants of serum perfluoroalkyl acid concentrations in Swedish adolescents and the importance of drinking water as a source of exposure
University essay from Uppsala universitet/Institutionen för biologisk grundutbildningAbstract : The persistent and toxic perfluoroalkyl acids (PFAAs) are ubiquitously present in the environment and reach humans predominantly via food and drinking water. The aim of the present study was to investigate the effect of low-grade (<10 ng L-1 of single PFAAs) contaminated PFAAs drinking water on serum PFAA concentrations in a representative Swedish adolescent population, and to examine the influence of potential determinants on the variation of the PFAAs serum concentrations. READ MORE
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10. A study to understand the information gap between total organofluorine analysis and total oxidizable precursor assay on polyfluoroalkyl/perfluoroalkyl substances (PFASs)
University essay from Örebro universitet/Institutionen för naturvetenskap och teknikAbstract : Total oxidizable precursor (TOP) assay is an oxidation method to convert precursor compound of polyfluoroalkyl/perfluoroalkyl substances (PFASs) into measurable perfluorinated carboxylic acids (PFCAs). A previous mass balance study has shown that a loss of fluorine was observed after employing the method to convert the precursors in firefighting foams. READ MORE
