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Development of a simple HPLC‐DAD multi‐analyte procedure and its application in cases evaluated by the Poison Control Center of São Paulo, Brazil
Author(s) -
Franco de Oliveira Sarah C.W.S.E.,
Zucoloto Alexandre D.,
Oliveira Carolina D.R.,
Hernandez Edna M.M.,
Fruchtengarten Ligia V.G.,
Oliveira Tiago F.,
Yonamine Mauricio
Publication year - 2018
Publication title -
biomedical chromatography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 65
eISSN - 1099-0801
pISSN - 0269-3879
DOI - 10.1002/bmc.4360
Subject(s) - chromatography , analyte , high performance liquid chromatography , chemistry , context (archaeology) , forensic toxicology , extraction (chemistry) , clinical toxicology , relative standard deviation , detection limit , toxicology , paleontology , biology
This work describes a simple approach to overcome challenges in emergency toxicological analysis, using liquid–liquid extraction and high‐performance liquid chromatography coupled with a diode‐array detector (HPLC‐DAD). A rapid procedure has been developed, for the extraction and detection of 19 analytes from the following drug classes: analgesics, benzodiazepines, antidepressants, anticonvulsants and drugs of abuse. These substances are relevant in the context of emergency toxicology in Brazil. The method has been validated according to international guidelines by establishing parameters such as lower limit of quantification, sensitivity, linearity, accuracy and precision. The intra and inter‐day precision values, at the lowest concentration levels, have always been less than 20% considering its relative standard deviation. As for accuracy values, these have also been satisfactory (above 81.3%). This method was successfully applied in 201 blood samples from patients with suspected poisoning of the Poison Control Center of São Paulo (PCC‐SP), Brazil. Finally, the developed method has shown to be relevant for emergency toxicology due to its high sensitivity and it could be also very useful in both fields of clinical and forensic toxicology.