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8 . - Se desea determinar la concentraci n de un analito en el extracto de una muestra. Para esto se preparan 4 disoluciones patr

8.- Se desea determinar la concentracin de un analito en el extracto de una muestra. Para esto se preparan 4 disoluciones patrn que adems contienen una misma concentracin de patrn interno (Pi) con los siguientes datos. (Valor 20 puntos)
\table[[,\table[[C(analito)],[mg/L]],\table[[rea],[Analito]],\table[[\table[[C(\Pi )],[mg/L]]]],\table[[rea],[Pi]]],[Patrn 1,300,450.7,250,905.7],[Patrn 2,400,804.9,250,901.3],[Patrn 3,500,1150.2,250,890.1],[Patrn 4,600,1405.6,250,897.8],[Muestra, c?,968.4,250,903.6]]
A la muestra se le adiciono Patrn interno de forma que la concentracin del patrn interno en el extracto es la misma que en las disoluciones patrn.
a) Encontrar la concentracin del analito en la muestra.
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