Author(s): RandezGil F, Daros JA, Salvador A, de la Guardia M
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Abstract The use of fifth order derivative spectra allows the direct determination of nitrazepam in urine at 388 nm with a limit of detection of 1 microgram ml-1. The determination of nitrazepam in blood plasma can be carried out directly by measurement at 402 nm in the fourth order derivative spectra with a limit of detection of 1.5 micrograms ml-1. Clonazepam can be determined directly in urine samples at 384 nm by using sixth order derivative spectra with a limit of detection of 1 microgram ml-1 and in blood plasma by using fourth order derivative spectra at 384 nm with a limit of detection of 0.5 ppm.
This article was published in J Pharm Biomed Anal
and referenced in Pharmaceutica Analytica Acta