Open AccessICP-EOS METHOD DEVELOPMENT AND VALIDATION FOR CR(VI) DETERMINATION IN PLANTS
Author(s) -
Anda-Gabriela Tenea,
Mihaela Mureşeanu,
Gabriela Geanina Vasile,
Cristina Dinu
Publication year - 2021
Publication title -
annals of the university of craiova. the chemistry series
Language(s) - English
Resource type - Journals
eISSN - 2821-4471
pISSN - 1223-5288
DOI - 10.52846/aucchem.2021.2.04
Subject(s) - detection limit , extraction (chemistry) , chromatography , inductively coupled plasma , inductively coupled plasma mass spectrometry , chemistry , analytical chemistry (journal) , mass spectrometry , materials science , plasma , physics , quantum mechanics
The aim of this study was the development and validation of a new inductively coupled plasma optical emission spectrometry (ICP-EOS) method for determination of Cr(VI) from vegetable samples. The new method was completely validated through verification of performance parameters (linearity, inter-day and intra-day precision, limit of detection - LOD and limit of quantification - LOQ). The vegetable samples, mint and basil, were contaminated with a known amount of K2Cr2O7. Cr(VI) was extracted from the vegetable samples by ultrasound assisted extraction technique, using 0.1 M Na2CO3 as extraction medium. The ICP-EOS method proved to be very sensitive, allowing to determine up to 3.0 µg/g Cr(VI) in vegetable matrices, value which was established as the method LOQ.