Evidence map›Paper›PMID 29249010›Full record

ArticleEnvironmental geochemistry and health2018

Evaluating the main sources of groundwater pollution in the southern Tehran aquifer using principal component factor analysis.

Hooman Ghahremanzadeh, Roohollah Noori, Akbar Baghvand, Touraj Nasrabadi

Abstract read
PubMed Publisher
In one paragraph

Article in Environmental geochemistry and health, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

12 citing papers in PubMed.

  1. Article
  2. Article
  3. Comparative review of ambient air PMJournal of environmental health science & engineering · 2023
    Review
  4. Nitrate in groundwater and agricultural products: intake and risk assessment in northeastern Iran.Environmental science and pollution research international · 2022
    Article
  5. Anthropogenic depletion of Iran's aquifers.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Groundwater Pollution Sources Apportionment in the Ghaen Plain, Iran.International journal of environmental research and public health · 2018
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Hooman GhahremanzadehDepartment of Environmental Engineering, Graduate Faculty of Environment, University of Tehran, Enqelab Avenue, Qods Street Azin Alley, Tehran, P.O. Box 14155-6135, Iran.
Roohollah NooriDepartment of Environmental Engineering, Graduate Faculty of Environment, University of Tehran, Enqelab Avenue, Qods Street Azin Alley, Tehran, P.O. Box 14155-6135, Iran. noor@ut.ac.ir.ORCID http://orcid.org/0000-0002-7463-8563
Akbar BaghvandDepartment of Environmental Engineering, Graduate Faculty of Environment, University of Tehran, Enqelab Avenue, Qods Street Azin Alley, Tehran, P.O. Box 14155-6135, Iran.
Touraj NasrabadiDepartment of Environmental Planning, Management and Education, Graduate Faculty of Environment, University of Tehran, Tehran, Iran.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

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.

Indexed as

AgricultureGroundwaterHydrogen-Ion ConcentrationMetals, HeavyPrincipal Component AnalysisSewageWater MicrobiologyWater Pollutants, ChemicalMetals, HeavySewageWater Pollutants, ChemicalGroundwater qualityPCFASource of pollutionTehran

Identifiers

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.