phytoextraction and phytostabilization potential of cadmium, chromium and nickel by populus alba and morus alba species

نویسندگان

مریم رفعتی

دانشجوی دکتری دانشکده محیط زیست و انرژی، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران، ایران نعمت ا... خراسانی

استاد دانشکده محیط زیست، دانشکده منابع طبیعی دانشگاه تهران، ایران فرهنگ مراقبی

استادیار گروه زیست شناسی، دانشگاه آزاد اسلامی، واحد شهرری، ایران انوشیروان شیروانی

استادیار گروه جنگلداری و اقتصاد جنگل، دانشکده منابع طبیعی دانشگاه تهران، ایران

چکیده

as a result of human activities, metal pollution has become one of the most serious environmental problems today. phytoremediation utilizes plants to uptake contaminants and can potentially be used to remediate metal-contaminated sites. a pot experiment was conducted to compare the phytoextraction and phytostabilization potential of two plant species (populus alba and morus alba) for some elements. thus, cd (40, 80, and 160 mg/kg), cr (60, 120, and 240 mg/kg) and ni (120, 240, and 480 mg/kg) were added to the soil, shoots and roots of studied species. associated soil samples were collected and analyzed by measurement of total concentration of cd, cr and ni and then bioconcentration factor (bcf) and translocation factor (tf) calculated for each element. our results show that none of the plants were suitable for phytostabilization of studied elements with root bcf1. in addition, populus alba with the shoot bcf>1 for cd in all studied treatments and ni in 240 and 480 mg/kg treatments were suitable for phytoextraction while morus alba was suitable for phytoextraction of ni with the shoot bcf>1 in all studied treatments.

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منابع مشابه

phytoremediation potential of populus alba and morus alba for cadmium, chromuim and nickel absorption from polluted soil

metal pollution has become one of the most serious environmental problems resulting from human activity. phytoremediation utilizes plants to uptake contaminants and can potentially be used to remediate metal-contaminated sites. the present study investigates heavy metal uptake (cd, cr, and ni) from soil by different organs of populus alba and morus alba. for this purpose, cd (40, 80, and 160 m...

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metal pollution has become one of the most serious environmental problems resulting from human activity. phytoremediation utilizes plants to uptake contaminants and can potentially be used to remediate metal-contaminated sites. the present study investigates heavy metal uptake (cd, cr, and ni) from soil by different organs of populus alba and morus alba. for this purpose, cd (40, 80, and 160 mg...

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عنوان ژورنال:
محیط زیست طبیعی

جلد ۶۵، شماره ۲، صفحات ۱۸۱-۱۹۱

کلمات کلیدی
[ ' a s a r e s u l t o f h u m a n a c t i v i t i e s ' , ' m e t a l p o l l u t i o n h a s b e c o m e o n e o f t h e m o s t s e r i o u s e n v i r o n m e n t a l p r o b l e m s t o d a y . p h y t o r e m e d i a t i o n u t i l i z e s p l a n t s t o u p t a k e c o n t a m i n a n t s a n d c a n p o t e n t i a l l y b e u s e d t o r e m e d i a t e m e t a l ' , ' c o n t a m i n a t e d s i t e s . a p o t e x p e r i m e n t w a s c o n d u c t e d t o c o m p a r e t h e p h y t o e x t r a c t i o n a n d p h y t o s t a b i l i z a t i o n p o t e n t i a l o f t w o p l a n t s p e c i e s ( p o p u l u s a l b a a n d m o r u s a l b a ) f o r s o m e e l e m e n t s . t h u s ' , ' c d ( 4 0 ' , 8 0 , ' a n d 1 6 0 m g / k g ) ' , ' c r ( 6 0 ' , 1 2 0 , ' a n d 2 4 0 m g / k g ) a n d n i ( 1 2 0 ' , 2 4 0 , ' a n d 4 8 0 m g / k g ) w e r e a d d e d t o t h e s o i l ' , ' s h o o t s a n d r o o t s o f s t u d i e d s p e c i e s . a s s o c i a t e d s o i l s a m p l e s w e r e c o l l e c t e d a n d a n a l y z e d b y m e a s u r e m e n t o f t o t a l c o n c e n t r a t i o n o f c d ' , ' c r a n d n i a n d t h e n b i o c o n c e n t r a t i o n f a c t o r ( b c f ) a n d t r a n s l o c a t i o n f a c t o r ( t f ) c a l c u l a t e d f o r e a c h e l e m e n t . o u r r e s u l t s s h o w t h a t n o n e o f t h e p l a n t s w e r e s u i t a b l e f o r p h y t o s t a b i l i z a t i o n o f s t u d i e d e l e m e n t s w i t h r o o t b c f 1 . i n a d d i t i o n ' , ' p o p u l u s a l b a w i t h t h e s h o o t b c f > 1 f o r c d i n a l l s t u d i e d t r e a t m e n t s a n d n i i n 2 4 0 a n d 4 8 0 m g / k g t r e a t m e n t s w e r e s u i t a b l e f o r p h y t o e x t r a c t i o n w h i l e m o r u s a l b a w a s s u i t a b l e f o r p h y t o e x t r a c t i o n o f n i w i t h t h e s h o o t b c f > 1 i n a l l s t u d i e d t r e a t m e n t s . ' ]

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