Optimization and Validation of an ETAAS Method for the Determination of Nickel in Postmortem Material
| Autor: | Danuta Dudek-Adamska, Paweł Kościelniak, Teresa Lech |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Hot Temperature
Health Toxicology and Mutagenesis Analytical chemistry Magnesium Compounds chemistry.chemical_element Toxicology Phosphates Analytical Chemistry law.invention Forensic Toxicology chemistry.chemical_compound Nickel law Animals Humans Environmental Chemistry Lung Brain Chemistry Detection limit Nitrates Chemical Health and Safety Chromatography Myocardium Spectrophotometry Atomic Stomach Reproducibility of Results Heart Ammonium dihydrogen phosphate Magnesium nitrate Liver chemistry Linear range Calibration Cattle Autopsy Atomic absorption spectroscopy Pyrolysis Palladium |
| Zdroj: | Journal of Analytical Toxicology. 39:460-464 |
| ISSN: | 1945-2403 0146-4760 |
| DOI: | 10.1093/jat/bkv039 |
| Popis: | In this article, optimization and validation of a procedure for the determination of total nickel in wet digested samples of human body tissues (internal organs) for forensic toxicological purposes are presented. Four experimental setups of the electrothermal atomic absorption spectrometry (ETAAS) using a Solaar MQZe (Thermo Electron Co.) were compared, using the following (i) no modifier, (ii) magnesium nitrate, (iii) palladium nitrate and (iv) magnesium nitrate and ammonium dihydrogen phosphate mixture as chemical modifiers. It was ascertained that the ETAAS without any modifier with 1,300/2,400°C as the pyrolysis and atomization temperatures, respectively, can be used to determine total nickel at reference levels in biological materials as well as its levels found in chronic or acute poisonings. The method developed was validated, obtaining a linear range of calibration from 0.76 to 15.0 μg/L, limit of detection at 0.23 µg/L, limit of quantification at 0.76 µg/L, precision (as relative standard deviation) up to 10% and accuracy of 97.1% for the analysis of certified material (SRM 1577c Bovine Liver) and within a range from 99.2 to 109.9% for the recovery of fortified liver samples. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|