Bio-Accumulation of Lead and Cadmium by Radish (Raphanus sativus) and Cress (Lepidium sativum) under Hydroponic Growing Medium
(ندگان)پدیدآور
Hedayatzadeh, F.Banaee, M.Shayesteh, K.نوع مدرک
TextOriginal Research Paper
زبان مدرک
Englishچکیده
In order to investigate the accumulation and bio-absorption of lead and cadmium in radish and cress, the present study has been conducted in a completely randomized design in three replicates in a hydroponic growing medium. The first factor includes the plant type at two levels (radish and cress), and the second factor is consisted of lead (Pb) (first experiment) at two levels (50 and 100 mg/L), cadmium (Cd) (second experiment) at one level (10 mg/L), and a combination of lead and cadmium (third experiment) again at two levels. After 23 days, roots and aerial parts of both plants have been dried for 48 hours at 70°C in an oven. Then, half gram (0.5 g) of the dried templates has been used to measure the accumulation of Pb and Cd by means of an atomic absorption spectrometer. The highest amount of Pb in radish and crest roots belong to 100 mg/L concentration and the combined Cd (10) + Pb (100) mg/L treatment, respectively, and the highest amount of Cd occurs in Cd (10) + Pb (50) for radish roots and in Cd (10) + Pb (100) combination for cress. Moreover, the Translocation Factor (TF), with a value below 1 and higher bio-concentration factor (BCF) in roots, compared to the aerial part of both radish and cress, seem to be due to the low capability of these plants to transfer Pb and Cd from roots to aerial part. There is a high potentiality for lead accumulation in the roots that prevent its transfer to the aerial part.
کلید واژگان
VegetablesHeavy metals
hydroponic cultivation
translocation factor. INTRODUCTION With the expansion of global industrialization
one of the significant and most evident environmental problems is the presence of heavy metals in human food chain. Not only do these metals diminish the quality of food but also they influence the health of human consumers
using such foodstuff in their diet. Therefore
monitoring these pollutants in * Corresponding
شماره نشریه
3تاریخ نشر
2020-07-011399-04-11
ناشر
University of Tehranسازمان پدید آورنده
Department of Environment, Faculty of Natural Resources and Environment, Malayer University, P.O. Box 65719-95863, Malayer, IranDepartment of Aquaculture, Faculty of Natural Resource and Environmental, Behbahan Khatam alanbia University of Technology, P.O. Box 63616-47189, Behbahan, Iran
Department of Environment, Faculty of Natural Resources and Environment, Malayer University, P.O. Box 65719-95863, Malayer, Iran
شاپا
2383-451X2383-4501