بررسي آلودگي فلزات سنگين رسوبات رودخانه با استفاده از شاخص هاي زمين انباشتگي ، ضريب آلودگي و تحليل مؤلفه اصلي (مطالعه موردي : جاجرود محدوده شهرستان پرديس)

The Investigation of river sediments heavy metals Pullutants with Geoaccumulation Index , Pollution Coefficient and Analysis of the main component (case study: Jajrooad in the range of pardis city)

ﻣﻬﻤﺘﺮﯾﻦ رودﺧﺎﻧﻪ ﺷﻬﺮﺳﺘﺎن ﭘﺮدﯾﺲ در ﺷﺮق ﺗﻬﺮان ﺟﺎﺟﺮود اﺳﺖ. در اﯾﻦ ﺗﺤﻘﯿﻖ ﺗﻌﺪاد 16 ﻧﻤﻮﻧﻪ از رﺳﻮﺑﺎت ﮐﻒ اﯾﻦ رودﺧﺎﻧﻪ ﮐﻪ در اواﯾﻞ ﺗﯿﺮﻣﺎه 1397 ﺑﺮداﺷﺖ ﮔﺮدﯾﺪ ، ﻣﻄﺎﻟﻌﻪ ﺷﺪه اﺳﺖ. ﻧﻤﻮﻧﻪ ﻫﺎي ﻣﺰﺑﻮرﺑﺮاي ﺗﻌﯿﯿﻦ ﻏﻠﻈﺖ ﻓﻠﺰات ﺳﻨﮕﯿﻦ As Hg Co Cu Pb Zn Cd Cr Fe و Mn ﺑﻪ روش ICP ﻣﻮرد آﻧﺎﻟﯿﺰ ﻗﺮار ﮔﺮﻓﺘﻨﺪ. رﺳﻮﺑﺎت رودﺧﺎﻧﻪ ﺟﺎﺟﺮود ﺑﻪ ﻋﻨﺎﺻﺮ روي، ﺳﺮب، و در ﺑﺮﺧﯽ اﯾﺴﺘﮕﺎﻫﻬﺎ ﺑﻪ ، ﻣﺲ ، ﻣﻨﮕﻨﺰ و ﮐﺎدﻣﯿﻮم آﻟﻮده ﺷﺪه اﻧﺪ. ﻣﻨﺒﻊ اﺣﺘﻤﺎﻟﯽ ﻋﻨﺎﺻﺮ ﻣﺲ، ﺳﺮب ﺗﺨﻠﯿﻪ ﻧﺨﺎﻟﻪ ﻫﺎي راﻫﺴﺎزي و ﻧﺨﺎﻟﻪ ﻫﺎي ﺳﺎﺧﺘﻤﺎﻧﯽ و ﻓﻌﺎﻟﯿﺘﻬﺎي اﻧﺴﺎﻧﯽ اﻋﻢ از ﺑﺎﻏﺪاري ، ﻣﺴﮑﻮﻧﯽ و ﺻﻨﺎﯾﻊ در اﻃﺮاف رودﺧﺎﻧﻪ ﺟﺎﺟﺮود اﺳﺖ. اﻓﺰاﯾﺶ ﻏﻠﻈﺖ ﻣﻨﮕﻨﺰ در اﯾﺴﺘﮕﺎه ﺳﻨﺠﺮﯾﺎن ، ﻧﺸﺎﻧﺪﻫﻨﺪهء ﻓﻌﺎﻟﯿﺘﻬﺎي داﻣﺪاري ، زﻣﯿﻦ ﮐﺸﺎورزي و ﻣﻨﺎﻃﻖ ﻣﺴﮑﻮﻧﯽ در ﻧﺰدﯾﮑﯽ ﺑﺴﺘﺮ رودﺧﺎﻧﻪ اﺳﺖ. ﻧﺘﯿﺠﻪ ﮔﯿﺮي ﻣﺆﻟﻔﻪ اﺻﻠﯽ ﺑﺎ ﻧﺘﺎﯾﺞ ﺣﺎﺻﻞ از آﻧﺎﻟﯿﺰ ﺧﻮﺷﻪ اي ﻧﯿﺰ ﻫﻤﺨﻮاﻧﯽ دارد و ﺑﺮاﺳﺎس آﻧﺎﻟﯿﺰ ﻫﺎي آﻣﺎري اﻧﺠﺎم ﮔﺮﻓﺘﻪ ﻣﯽ ﺗﻮان ﮔﻔﺖ ﮐﻪ آﻫﻦ و ﮐﺒﺎﻟﺖ و ﮐﺮوم و روي ﻣﻨﺒﻊ ﯾﮑﺴﺎﻧﯽ دارﻧﺪ )زﻣﯿﻦ زاد(. اﯾﻦ ﻣﻄﻠﺐ در ﻣﻮرد ﮐﺎدﻣﯿﻮم و آرﺳﻨﯿﮏ وﺟﻮد ﻣﻨﺒﻊ ﻣﺸﺘﺮك )اﻧﺴﺎن زاد( مجزا را بيان مي دارد

The most important river in the city of pardis at the east of Tehran , is Jajrood . In this research 16 samples of sediment of this river were studied that collected in early July (2018). These samples were analyzed to determine the concentration of Fe , Cr , Cd , Zn , Pb , Cu , Co , Hg , As and Mn elements with TCP method for heavy metals. The Jajrood River sediments are contaminated with Zinc, lead and at some stations to copper and manganese and Cadmium. The possible source of copper and lead elements is the discharge of construction waste and road construction, agricultural and horticultural activities, residential areas and industry activity near the river. The increase in manganese concentration at Sanjrian station is due to human activities, including agriculture, horticulture and residential areas near the river. Conclusion the principal component is consistent with the results of cluster analysis. Based on statistical analysis, it can be said that iron, cobalt, chromium and zinc have the same source (Lithogenic). This article also discusses cadmium and arsenic as a common source (Anthropogenic) and also provides a separate source (Anthropogenic) for lead.