Abdesselam S, Halitim A, Jan A, Trolard F, Bourrié G (2013) Anthropogenic contamination of groundwater with nitrate in arid region: Case study of Southern Hodna (Algeria). Environmental Earth Sciences 70(5):2129-2141
Afzali A, Shahedi K (2014) Investigation on trend of groundwater quantity-quality variation in Amol-Babol Plain. Journal of Watershed Management Research 5(10):144-156 (In Persian)
Bosalik Z, Jafari H (2020) Use of geochemical techniques in identifying the origin of ions and Shahroud aquifer water quality control processes. Earth Knowledge Research 11(44) P181-196 (In Persian)
Chitsazan M, Ilbaygi M, Pourtabari M (2018) Evaluation of groundwater nitrate pollution based on principal components method and factor analysis (Case study: Karaj plain aquifer). Echo Hydrology 5(4):1119-1133 (In Persian)
Clawges RM, Vowinkel EF (1996) Variables indicating nitrate contamination in bedrock aquifers, Newark Basin, New Jersey. Water Resources Bulletin 32(5):1055–1066
Darkhor M, Shaban M (2018) Study of microbial and nitrate contamination in groundwater aquifers. Environmental Science Studies 3(1):607-618 (In Persian)
Fetter CW (1999) Contaminant hydrogeology. Upper Saddle River, NJ: Prentice hill
Freeze R A, Cherry J (1979) AGround water. Prentice Hall, Englewood Cliffs, NJ
Heumesser C, Wick K, Schmid E (2012) Groundwater nitrate contamination: Factors and indicators. Journal of Environmental Management 111(3):178-18
Isa N M, Aris A Z, Lim W Y, Sulaiman W N A W, Praveena S M (2014) Evaluation of heavy metal contamination in groundwater samples from Kapas Island, Terengganu, Malaysia. Arabian Journal of Geosciences 7(3):1087-1100
Jafari H, Kalatgi M (2016) Hydrogochemistry of Shahroud aquifer and investigation of factors controlling nitrate pollution. Journal of Advanced Applied Geology 19, 6(3):63-74 (In Persian)
Kalantai N, Anbari A, Mohammadi H (2018) Hydrochemical assessment of surface and groundwater resources of the Bostan Plain using multivariate statistical techniques. Iran-Water Resources Research 14 (2):236-248 (In Persian)
Kehew AE, Straw WT, Steinmann WK, Barrese PG, Passarella G, Peng W (1996) Ground-water quality and flow in a shallow glaciofluvial aquifer impacted by agricultural contamination. Ground Water 34(3):491–500
Kenney D R (1989) Sources of Nitrate to ground water. Developments in Agricultural and Managed Forest Ecology 21:23-34
Kura N, Ramli M, Sulaiman W, Ibrahim Sh, Aris A, Mustapha A (2013) Evaluation of factors influencing the groundwater chemistry in a small tropical island of Malaysia. International Journal of Environmental Research and Public Health 10(5):1861-1881
Liu C Q, Han G (2004) Water geochemistry controlled by carbonate dissolution: a study of the river waters draining karst-dominated terrain, Guizhou Province, China. Chemical Geology 204(1-2):1-21
Mozafarizadeh J, Sajadi Z (2014) Survey of groundwater chemical pollution in the Borazjan plain. Iranian South Medical Journal 17(5):927-937 (In Persian)
Naderi K, Nadiri A, Asghari moghadam A, Kord M (2018) Evaluation of hydrogeochemical status of Salmas plain aquifer using multivariate statistical methods. Echo Hydrology 5(3):791-800 (In Persian)
Noori R, Khakpour A, Omidvar B, Farokhnia A (2010) Comparison of ANN and principal component analysis-multivariate linear regression models for predicting the river flow based on developed discrepancy ratio statistic. Expert Systems with Applications 37(8):5856-5862
Pawar N J, Shaikh I J (1995) Nitrate pollution of groundwater from shallow basaltic aquifer. Deccan Trap Hydrologic Province India Geo 25:197-204
Qian J, Wang L, Liu Y, Wu B, Wang X (2014) Distribution of nitrate and its implication for the contaminant source in groundwater of Huaibei Plain, Anhui Province. Geosciences Journal 19:537–545
Ramaroson V, Randriantsivery J, Rajaobelison J, Lahimamy F, Rakotomalala Ch, Rajaobelison J, Razafitsalama F, Rasolofonirina M (2020) Nitrate contamination of groundwater in Ambohidrapeto– narivo‑Madagascar using hydrochemistry and multivariate analysis. Applied Water Science 10:178 a Antan
Shirani Z, Abaspour M, Javid A, Taghavi L (2013) Evaluation of ground water pollution in the urban environment (Case study: District 14 of Tehran Municipality).Quarterly Journal of Man and the Environment 11(1):1-16 https://he.srbiau.ac.ir/ article_3258.html (In Persian)
Shrestha S A, Kazama F (2007) Assessment of surface water quality using multivariate statistical techniques: A case study of the Fuji river basin, Japan. Journal of Environmental Modeling & Software 22(4):464-475
Stat Soft Inc (2004) STATISTICA (Data Analysis Software System). Version 6
Suresh Nathan N, Saravanane R, Sundararajan T (2017) Spatial variability of ground water quality using HCA, PCA and MANOVA at Lawspet, Puducherry in India. Computational Water, Energy, and Environmental Engineering 6:243-268
WHO (2011) Guidelines for drinking-water quality, 4th edn. World Health Organization, Geneva Switzerland 398-403
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