An analytical study of some trace elements in water and plants using an atomic absorption spectrophotometer in Thi-qar governorate

الملخص EN

The present study was conducted to measure concentrations of six trace elements (Cu ,Pb ,Zn ,Cr ,Ni and Cd ) in water and plants (Apium graveolens , Lepidium sativum and Raphanus sativus).

The samples were collected during winter 2016 from different places of Thi-Qar province.

Levels of trace elements were determined by aflame atomic absorption spectroscopy (FAAS).

The means concentrations of Cu ,Pb ,Zn ,Cr ,Ni and Cd in the water were 1.687, 3.052, 1.634, 4.082, 0.341 and 0.879 ppm respectively.

In plants, their means concentrations in the A.

graveolens plant were 3.288 , 1.930 , 2.850, 3.440 , 0.375 and 0.715 ppm dry weight respectively, in the L.

sativum plant were (4.745 , 1.724 , 3.213 , 2.789 , 0.375, 0.750) ppm dry weight respectively, and in the R.

sativus plant were 4.677, 1.559, 2.348 , 2 .483, 0.373 and 0.679 ppm dry weight respectively.It was found that most concentrations of trace elements in the water samples were exceeded the allowed limits for irrigation.

Moreover, in A.

graveolens, L.

sativum and R.

sativus plants, elements Pb,Cr and Cd exceeded the allowed limits by Food and Agricultur organization (FAO) and World Health Organization (WHO).