Determination of heavy metals and anthraquinone in black tea
Journal Title: Health and Medical Research Journal - Year 2021, Vol 1, Issue 1
Abstract
Introduction: A rapid and simple method was investigated for determining the concentration of some contaminants including heavy metals such as lead (Pb), cadmium(Cd), chromium (Cr), and anthraquinone in black tea samples in Iran. Methods: Heavy metals such as Pb, Cd, and Cr in tea samples were detected using inductively coupled plasma optical emission spectrometry (ICP-OES) after microwave acid digestion (MAD). The anthraquinone in infusion tea samples was determined via liquid chromatography photodiode array detector after the dispersive liquid-liquid microextraction method (DLLME). Results:Recoveries of all the tea samples in heavy metals and anthraquinone were in the range of 75% - 89% and 71%-96, respectively. The results of recoveries are in the range of the Association of Official Analytical Chemists (AOAC) and the European Union. RSD in the MAD and DLLME methods was less than 5%. The mean concentrations of Pb, Cd, Cr, and anthraquinone were 0.724, 0.021, 2.98 ppm, and 2.27 ppb. Conclusion: Overall our results showed that MAD and DLLME methods could successfully determine the concentration of some contaminants such as Pb, Cd, Cr, and anthraquinone in black tea samples.
Authors and Affiliations
Narges Chamkouri; Sanaz Karimpour; Jamile Deris; Zahra Koolivand; Seyed Mohammad Ali Malaekeh; Fariba Deris
Keywords
Related Articles
- EP ID EP709348
- DOI 10.22034/HMRJ.2022.143241
- Views 58
- Downloads 0
Comparison of awareness of radiation protection, dose levels, and complications of radiation exposure in imaging procedures between radiology residents/undergraduate students and radiology staff: A cross-sectional study
introduction: Radiographic tools are one of the most instruments in hospitals. The ionizing radiation process occurs in radiographic instruments. The ionizing radiation causes side effects in the users. Lack of knowledge...
Examination of the oral health-related quality of life in rural pregnant women after receiving the Health Evolution Plan services
Introduction: The aim of this study was to examine the quality of life regarding the oral health in pregnant women in the village of Robat Karim after receiving the Health Evolution Plan services. Methods: The research...
Pre-operation and post-operation anxiety in cesarean candidates
Introduction: Women undergoing cesarean section may have some difficulties in self-care and the care of their baby due to post-operative pain as well. If anxiety-inducing factors in the mother are not controlled or treat...
Determination of heavy metals and anthraquinone in black tea
Introduction: A rapid and simple method was investigated for determining the concentration of some contaminants including heavy metals such as lead (Pb), cadmium(Cd), chromium (Cr), and anthraquinone in black tea samples...
Survey of knowledge and attitude of students of Abadan University of Medical Sciences to “COVID - 19”
Introduction: ”COVID-19” is a dangerous viral disease that has recently become a pandemic. In the meantime, the knowledge and attitude of medical students in caring for patients are very important. Therefore, this stud...