identification of heavy metals contamination at bushehr mangroves

نویسندگان

علی داوری

کارشناسی ارشد محیط زیست، گروه محیط زیست دانشکدة منابع طبیعی دانشگاه تهران افشین دانه کار

دانشیار محیط زیست، گروه محیط زیست دانشکدة منابع طبیعی دانشگاه تهران نعمت الله خراسانی

استاد محیط زیست، گروه محیط زیست دانشکدة منابع طبیعی دانشگاه تهران آرش جوانشیر

استادیار شیلات، گروه شیلات دانشکده منابع طبیعی دانشگاه تهران

چکیده

mangrove trees occur along the coastal areas of bushehr province, south iran and these plants have been used in traditional medicine and fodder for centuries. heavy metals are known to pose a potential threat to terrestrial and aquatic biota. however, little is known on the levels of heavy metals found in mangrove in iran. to understand levels of heavy metals and identified heavy metal source, we used mathematical methods. principal components analysis (pca) is a multivariate statistical technique capable of discerning patterns in large environmental datasets. typically, pca has been used to examine the spatial variability of contaminants. however, it has also been used to discriminate between contaminant sources and to identify key variables for environmental monitoring purposes. surface mangrove sediments (0–10 cm) collected from three mangrove sites in bushehr, northern persian gulf were sampled for metal contamination analysis in april 2009. the concentrations ranged (in µg g-1 dry weight): al, 1795-30240; fe,6425-51530; cd, 0.6-3.45; cu, 14.1-98.28; ni, 14.1-204.54; pb, 34.15-191.6; v, 57.38-825.26 and zn, 44.91–306.15; respectively. reducing the in?uence of grain size using granulometric normalisation mean that other factors affecting metal variability, including mineralogy, anthropogenic sources and oil pollution, could be identi?ed and interpreted more clearly.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Heavy metals in mangroves: methodology, monitoring and management

An extensive study of heavy metals in Australian mangroves has revealed strong regional differences in the concentrations of several metals. The results also indicate that (i) fine textured mangrove sediments are highly efficient and effective sinks for heavy metals; (ii) metal concentrations in mangrove tissues, particularly in young leaves, correlate with concentrations in the sediments; (iii...

متن کامل

Heavy Metals Contamination of Table Salt Consumed in Iran

Lead, cadmium, mercury and arsenic are the most important heavy metals which may cause health risks following consumption of contaminated foods. Table salt is one the mostly used food additive with unique place in food consumption. Although purified table salt is expected to have lower level of contamination, some Iranians still prefer to use rock salt. Use of rock salt for food purposes has be...

متن کامل

Heavy Metals Contamination of Table Salt Consumed in Iran

Lead, cadmium, mercury and arsenic are the most important heavy metals which may cause health risks following consumption of contaminated foods. Table salt is one the mostly used food additive with unique place in food consumption. Although purified table salt is expected to have lower level of contamination, some Iranians still prefer to use rock salt. Use of rock salt for food purposes has be...

متن کامل

Contamination profile of heavy metals in marine fish and shellfish

Rapid industrialization along with advanced agricultural activities led to the contamination in aquatic environment with heavy metals. Heavy metals ultimately pass into human body through having aquatic animals like fish, prawn and crab. In this study, accumulation of heavy metals (zinc, copper, iron, cadmium and lead) in various organs of four commonly consumed fish (Euthynnus affinis...

متن کامل

Heavy Metals Contamination of Table Salt Consumed in Iran

Lead, cadmium, mercury and arsenic are the most important heavy metals which may cause health risks following consumption of contaminated foods. Table salt is one the mostly used food additive with unique place in food consumption. Although purified table salt is expected to have lower level of contamination, some Iranians still prefer to use rock salt. Use of rock salt for food purposes has be...

متن کامل

Assessment of Heavy Metals Contamination in Near-Surface Dust

As a result of the continuous urbanization and industrialization in China over the last few decades, heavy metals have been continuously emitted into urban environments and now pose serious threats to human health. In the present study, an extensive urban near-surface dust survey was conducted in Changchun, China, to evaluate the current status of heavy metal contamination in urban dust and to ...

متن کامل

منابع من

با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید


عنوان ژورنال:
محیط شناسی

جلد ۳۸، شماره ۳، صفحات ۲۷-۳۶

کلمات کلیدی
[ ' m a n g r o v e t r e e s o c c u r a l o n g t h e c o a s t a l a r e a s o f b u s h e h r p r o v i n c e ' , ' s o u t h i r a n a n d t h e s e p l a n t s h a v e b e e n u s e d i n t r a d i t i o n a l m e d i c i n e a n d f o d d e r f o r c e n t u r i e s . h e a v y m e t a l s a r e k n o w n t o p o s e a p o t e n t i a l t h r e a t t o t e r r e s t r i a l a n d a q u a t i c b i o t a . h o w e v e r ' , ' l i t t l e i s k n o w n o n t h e l e v e l s o f h e a v y m e t a l s f o u n d i n m a n g r o v e i n i r a n . t o u n d e r s t a n d l e v e l s o f h e a v y m e t a l s a n d i d e n t i f i e d h e a v y m e t a l s o u r c e ' , ' w e u s e d m a t h e m a t i c a l m e t h o d s . p r i n c i p a l c o m p o n e n t s a n a l y s i s ( p c a ) i s a m u l t i v a r i a t e s t a t i s t i c a l t e c h n i q u e c a p a b l e o f d i s c e r n i n g p a t t e r n s i n l a r g e e n v i r o n m e n t a l d a t a s e t s . t y p i c a l l y ' , ' p c a h a s b e e n u s e d t o e x a m i n e t h e s p a t i a l v a r i a b i l i t y o f c o n t a m i n a n t s . h o w e v e r ' , ' i t h a s a l s o b e e n u s e d t o d i s c r i m i n a t e b e t w e e n c o n t a m i n a n t s o u r c e s a n d t o i d e n t i f y k e y v a r i a b l e s f o r e n v i r o n m e n t a l m o n i t o r i n g p u r p o s e s . s u r f a c e m a n g r o v e s e d i m e n t s ( 0 1 0 c m ) c o l l e c t e d f r o m t h r e e m a n g r o v e s i t e s i n b u s h e h r ' , ' n o r t h e r n p e r s i a n g u l f w e r e s a m p l e d f o r m e t a l c o n t a m i n a t i o n a n a l y s i s i n a p r i l 2 0 0 9 . t h e c o n c e n t r a t i o n s r a n g e d ( i n µ g g ' , ' 1 d r y w e i g h t ) : a l ' , 1 7 9 5 , ' 3 0 2 4 0 ; f e ' , 6 4 2 5 , ' 5 1 5 3 0 ; c d ' , ' 0 . 6 ' , ' 3 . 4 5 ; c u ' , ' 1 4 . 1 ' , ' 9 8 . 2 8 ; n i ' , ' 1 4 . 1 ' , ' 2 0 4 . 5 4 ; p b ' , ' 3 4 . 1 5 ' , ' 1 9 1 . 6 ; v ' , ' 5 7 . 3 8 ' , ' 8 2 5 . 2 6 a n d z n ' , ' 4 4 . 9 1 3 0 6 . 1 5 ; r e s p e c t i v e l y . r e d u c i n g t h e i n ? u e n c e o f g r a i n s i z e u s i n g g r a n u l o m e t r i c n o r m a l i s a t i o n m e a n t h a t o t h e r f a c t o r s a f f e c t i n g m e t a l v a r i a b i l i t y ' , ' i n c l u d i n g m i n e r a l o g y ' , ' a n t h r o p o g e n i c s o u r c e s a n d o i l p o l l u t i o n ' , ' c o u l d b e i d e n t i ? e d a n d i n t e r p r e t e d m o r e c l e a r l y . ' ]

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023