Naslov
Monitoring content of cadmium, calcium, copper, iron, lead, magnesium and manganese in tea leaves by electrothermal and flame atomizer atomic absorption spectrometry

Autori
Prkić, Ante ; Jurić, Antonija ; Giljanović, Josipa ; Politeo, Nives ; Sokol, Vesna ; Bošković, Perica ; Brkljača, Mia ; Stipišić, Angela ; Fernandez, Carlos ; Vukušić, Tina

Izvornik
Open Chemistry (2391-5420) 15 (2017), 1; 200-207

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
trace elements ; chemometrics ; tea ; ETAAS ; FAAS ; PCA

Sažetak
Due to the simplicity of tea preparation (pouring hot water onto different dried herbs) and its high popularity as a beverage, monitoring and developing a screening methodology for detecting the metal content is very important. The concentrations of Cd, Ca, Cu, Fe, Pb, Mg and Mn in 11 different samples of sage (Salvia officinalis L.), linden (Tilia L.) and chamomile (Matricaria chamomilla L.) purchased at local herbal pharmacy were determined using electrothermal atomizer atomic absorption spectrometry (ETAAS) and flame atomizer atomic absorption spectrometry (FAAS). The concentrations determined were: Cd (0.012 – 0.470 mg kg−1), Ca (5209 – 16340 mg kg−1), Cu (22.01 – 33.05 mg kg−1), Fe (114.2 – 440.3 mg kg−1), Pb (0.545 – 2.538 mg kg−1), Mg (2649 – 4325 mg kg−1) and Mn (34.00 – 189.6 mg kg−1). Principal Component Analysis (PCA) was applied to identify factors (soil and climate) influencing the content of the measured elements in herbal samples. The proposed methodology developed in this work was successfully applied to the detection of metals in herbal samples. The analysis showed that the content of toxic metals in herbal teas was below the maximum dose recommended by the World Health Organization (WHO).

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA