Abstract:
:Determining the main sources of pollution (MSP) in groundwater is crucial to improve water quality (WQ) status. Field studies were conducted in this research, where five sampling campaigns were carried out from 36 wells in the southern Tehran aquifer. In all samples, WQ parameters were measured and evaluated regarding the Iranian drinking water standard (IDWS). Finally, by using the principal component factor analysis (PCFA), the probable MSP in the aquifer were determined. The results showed that all ions, total hardness, and total dissolved solids were above the IDWS. To analyze the PCFA results, only the first four of twenty rotated principal factors (RPFs) that conserved a high percentage of the variance of the data (about 90%) were considered. The results of the first PRF revealed that the geological structure was the MSP in the aquifer. Furthermore, the second RPF was mainly affected by nutrients (nitrate and orthophosphate) and microbial parameters (fecal and total coliforms), indicating the importance of agricultural activities and sewage effluents as another MSP in the aquifer. Finally, the remarkable share of heavy metals and pH in formation of the third and fourth RPFs, respectively, reflected the role of industrial activities as a probable MSP of groundwater.
journal_name
Environ Geochem Healthjournal_title
Environmental geochemistry and healthauthors
Ghahremanzadeh H,Noori R,Baghvand A,Nasrabadi Tdoi
10.1007/s10653-017-0058-8subject
Has Abstractpub_date
2018-08-01 00:00:00pages
1317-1328issue
4eissn
0269-4042issn
1573-2983pii
10.1007/s10653-017-0058-8journal_volume
40pub_type
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