dc.contributor.advisor | Torrenegra Guerrero, Rubén Darío, dir. | spa |
dc.contributor.author | Mosquera Estrada, Jair | spa |
dc.date.accessioned | 2019-08-22T15:09:11Z | spa |
dc.date.available | 2019-08-22T15:09:11Z | spa |
dc.date.issued | 2011 | spa |
dc.identifier.uri | https://repository.udca.edu.co/handle/11158/1992 | spa |
dc.description | 86 páginas : gráficas | spa |
dc.description.abstract | La presencia de Nitrosaminas en productos cosméticos, son una preocupación internacional por su potencial efecto carcinogénico en humanos. Las regulaciones en la Comunidad Europea y Norteamérica establecen un límite máximo (10 ppb) de Nitrosodietanolamina. Pueden contaminar cosméticos, debido a materias primas, proceso y almacenamiento si existen agentes nitrosantes (nitritos, óxidos de nitrógeno). En Colombia no se realiza este análisis y se requiere la implementación de técnicas analíticas para determinarlas. El objetivo es estandarizar una técnica analítica económica para determinar nitrosodietanolamina en champú entre 10 – 100 ppb. Se prepararon curvas de calibración en acetato de etilo y matrices sintéticas de Agua: Genapol LRO (72:28) con diferentes concentraciones de nitrosodietanolamina. En las curvas se obtuvieron (r2) entre 0,9858 y 0, 9940, y (r) entre 0,9929 y 0, 9970. Las matrices sintéticas se sometieron a extracción en fase sólida normal, usando como absorbente Florisil y Diclorometano: Isopropanol (90:10) como solvente de elución.Los extractos se evaporaron a sequedad, se diluyeron con acetato de etilo y se inyectaron al cromatógrafo de gases con detector µECD y columna DB-WAX, rampa de temperatura entre 170 a 240°C a una rata de 20°C/min. La recuperación obtenida estuvo entre 83 a 110 %, desviaciones estándar relativa entre 6 a 7% y limite de detección de 3 ppb de Nitrosodietanolamina. La Técnica analítica implementada brinda buenas predicciones entre 10 – 100 ppb. Los costos son económicos para los laboratorios de Control de Calidad si estos preparan los cartuchos. Se recomienda validar técnica y realizar estudio utilizando Champú mediante adición de estándar. | spa |
dc.format.mimetype | application/pdf | spa |
dc.language.iso | spa | spa |
dc.publisher | Bogotá : Universidad de Ciencias Aplicadas y Ambientales, 2011 | spa |
dc.rights | Derechos Reservados - Universidad de Ciencias Aplicadas y Ambientales | spa |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-sa/4.0/ | spa |
dc.subject.mesh | Farmacovigilancia | spa |
dc.subject.mesh | Carcinógenos | spa |
dc.title | Estandarización de una técnica analítica por CG-ECD para determinación de introsaminas en champú | spa |
dc.type | Trabajo de grado - Pregrado | spa |
dc.rights.accessrights | info:eu-repo/semantics/closedAccess | spa |
dc.description.notes | Incluye bibliografía | spa |
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dc.rights.creativecommons | Atribución-NoComercial-CompartirIgual 4.0 Internacional (CC BY-NC-SA 4.0) | spa |
dc.type.coar | http://purl.org/coar/resource_type/c_7a1f | spa |
dc.type.driver | info:eu-repo/semantics/bachelorThesis | spa |
dc.type.version | info:eu-repo/semantics/publishedVersion | spa |
dc.subject.agrovoc | Nitrosaminas | spa |
dc.description.degreelevel | Pregrado | spa |
dc.description.degreename | Químico(a) | spa |
dc.publisher.faculty | Facultad de Ciencias | spa |
dc.publisher.program | Química | spa |
dc.type.content | Text | spa |
dc.type.redcol | http://purl.org/redcol/resource_type/TP | spa |
oaire.accessrights | http://purl.org/coar/access_right/c_14cb | spa |
oaire.version | http://purl.org/coar/version/c_970fb48d4fbd8a85 | spa |