CHED 1128 |
| Pesticides are among the chemicals to which people are most exposed with serious implications on health. The tendency to explore non-invasive techniques such as sweat is growing. In recent years sweat has arisen as a matrix to analyze exogenous substances like controlled addictive drugs and nicotine. Based on the success of this method, we decided to explore its use for monitoring exposure to pollutants. Patches with model matrix spiked with standards, including pesticides as well as other pollutants were extracted using Ultrasonic Probe Extraction. Different types of extraction solutions were used. Optimizations of parameters for the extraction and for the injection with SPME into the GC/MS were performed. The optimum parameters were: the solvent mixtures: dichloromethane/acetone (1:1) and NaAcet/Methanol, (3:1); volume of extraction: 20 mL, the extraction temperature: 10ºC, and no agitation. The results found substances like: antioxidants, waxes, flavoring agents, cholesterol, fatty acids, phthalates, insecticides, and plasticizers. |
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Undergraduate Research Poster Session: Environmental Chemistry
2:00 PM-4:00 PM, Monday, March 26, 2007 Hyatt Regency Chicago -- Riverside Center, Poster
Division of Chemical Education |