scholarly journals Study of Heavy Metals in Teas from Romanian Market

2020 ◽  
Vol 71 (2) ◽  
pp. 156-160
Author(s):  
Gheorghe Gutt ◽  
Sonia Amariei ◽  
Liliana Norocel
Keyword(s):  
Mass Spectrometry ◽  
Heavy Metals ◽  
Food Safety ◽  
Inductively Coupled Plasma ◽  
Black Tea ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Permissible Dose

The aim of this study was to determine heavy metals levels in some varieties of tea from the Romanian market. For this purpose, 15 samples of tea of the following assortments were analyzed: green tea, black tea, herb tea and fruit tea. Determination of heavy metals traces was achieved with inductively coupled plasma mass spectrometry (ICP-MS). The quantities of Pb, Hg and Cd from analyzed tea samples were compared with the permissible dose in accordance with the Notice of Scientific Panel on Contaminants in the Food Chain of European Food Safety Authority (EFSA).

Determination of Heavy Metals in Rhizomes of Alpinia galanga by Inductively Coupled Plasma Mass Spectrometry

2011 ◽  
Vol 486 ◽  
pp. 143-146 ◽  
Author(s):  
Chutima Limmatvapirat ◽  
Thawatchai Phaechamud ◽  
Juree Charoenteeraboon
Keyword(s):  
Mass Spectrometry ◽  
Heavy Metals ◽  
Inductively Coupled Plasma ◽  
Limit Of Detection ◽  
Acid Digestion ◽  
Alpinia Galanga ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry

Galangal (Alpinia galanga(Linn.) Swartz.) is a popular spice in Thailand. Heavy metals, deriving from environmental pollution, might be contaminated in galangal rhizomes. Inductively coupled plasma mass spectrometry (ICP-MS) was a new and fast technique for ultratrace elemental analysis. The aim of this study was to validate a method for the determination of aluminium (Al), arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu), iron (Fe), mercury (Hg), manganese (Mn), nickel (Ni), lead (Pb), and zinc (Zn) in galangal rhizomes according to the European standards (EU) using nitric acid digestion followed by ICP-MS. The parameters evaluated in the validation were recovery, repeatability and within-laboratory reproducibility, limit of detection (LOD), and limit of quantification (LOQ). This method was used to analyze the concentrations of 11 heavy metals in 15 samples of galangal rhizomes collected in Nakhon Pathom province. The metal concentrations varied considerably in the different sample sources. The concentration of heavy metals in the galangal samples arranged in increasing order was Hg < Cd < As < Cr < Pb < Ni < Cu < Zn < Fe < Mn < Al. An acid digestion and ICP-MS method was applicable to determination of 11 heavy metals in galangal rhizomes, based on the recovery analysis, cost, and time taken

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