نتایج جستجو برای: no3 and cl

تعداد نتایج: 16832585  

2002
C. V. Toner

The negative impact of nitrate (NO3) on groundwater supplies has sparked a great deal of interest and concern in recent years, particularly in areas where coarse-textured soils abound. In light of this concern, the anion exchange chemistry of eight soils from the Middle Atlantic region was studied with particular emphasis on NO3 retention and kinetics. The soils were chosen to encompass a range...

Journal: :international journal of environmental research 2011
g.t. eneke s.n. ayonghe d. chandrasekharam r. ntchancho a.a. ako

douala metropolitan city loated in the littoral province of cameroon,has experienced a rapid urbaniation and industralisation. the city depends heavily on groundwater as a resource. due to ubiquitous sources of pollution, groundwater quality and contamination has become an imprtant issue for this urban groundwater supply. this study uses the major ion chemistry of groundwater together with t...

Journal: :Current World Environment 2021

The present study represents the impact of marble mining and processing units on quality ground water in Rajasamand district Rajasthan state. For this work various sampleswere collected from surrounding areas hub covering all tehsil namely- Rajasmand, Amet, Bhim, Deogarh, Khamnor,Kumbhalgarh, RailmangraofRajasamd district. sample were analysed for Physio- chemical parameters like-Electrical Con...

Journal: : 2021

This study represents the application of Water Quality Indices (WQI) and GIS techniques to grading water pollution factors that influenced groundwater quality Holocene (qh) Pleistocene (qp) aquifers in coastal zone Ninh Thuan province. 100 underground samples were collected from residential well qh aquifer (53 samples) qp (47 samples). indices using incorporated total dissolved solids (TDS), ch...

2017
Tien Shan B. Grigholm P. A. Mayewski V. Aizen K. Kreutz E. Aizen S. Kang K. A. Maasch S. B. Sneed

Using a high-resolution (~18 samples/year) major soluble ion record (Na, K, Mg, Ca, Cl!, NO3 !, and SO4 2!) covering the period 1908–1995 A.D. from the Inilchek Glacier, Tien Shan, Kyrgyzstan, we provide a detailed climate and environmental proxy record for the region. Chemical concentrations, empirical orthogonal function analyses, and noncrustal excess calculations are used to identify natura...

Journal: :Catalysts 2022

Nitrate (NO3−) reduction in water has been receiving increasing attention treatment due to its carcinogenic and endocrine-disrupting properties. This study employs a novel advanced process, the UV/oxalic acid/ferric iron systems (UV/C2O42−/Fe3+ systems), reducing NO3− high efficiency, excellent selectivity, low cost. The UV/C2O42−/Fe3+ process reduced with pseudo-first-order reaction rate const...

Journal: :Water 2023

Water quality is identically important as quantity in terms of meeting basic human needs. Therefore, evaluating the surface-water and associated hydrochemical characteristics essential for managing water resources arid semi-arid environments. present research was conducted to evaluate predict agricultural purposes across Nile River, Egypt. For that, several irrigation indices (IWQIs) were used,...

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