Evaluation of water quality of nine boreholes and three open hand-dug wells in a rural community in North Central Nigeria revealed relative abundance of cations Na > k > Ca > Mg > Zn > Pb and anions Cl(-) > PO4(2-) > SO4(2-) > NO3(-) in the boreholes and cations Ca > Na > K > Mg > Pb and anions NO3(-)  > PO4(2-)  > SO4(2-) > Cl(-) in the wells. The major contaminants exceeding SON and WHO permi...

North of Sahara, Algeria. The effects water/rock interactions and hydrodynamic conditions on the characteristics groundwater in Continental Intercalaire aquifer (CI) are demonstrated using hydrochemical isotopic data from Mzab Ridge. results confirm that CI oriental basin is highly mineralized (1010 > EC 3500 ?S/cm) SO4-Cl-Na type. However, it poorly (340 960) occidental predominantly belongs t...

A series of diastereoisomeric square planar nickel(II) diperchlorate complexes, [Ni(L)](ClO4)2{L= isomeric Me8[14]ane (LAα, LBα or LCα)}undergo axial ligand addition reactions with NO3-, Cl-, Br-, SCN- ClO4- to yield six coordinate octahedral derivatives [NiL(X)x(Y)y].z(H2O)(X=NO3,Cl, Br SCN; Y= ClO4; x = 1 2; y 0 and z 0, 2). The products have been characterized on the basis analytical, spectr...

Hydrological and biogeochemical relationships were evaluated for the Arbutus Watershed in the Adirondack Mountains of New York State. Wet-only precipitation inputs (weekly) and discharge losses were evaluated from 1983 to 1998. Precipitation from 1983–98 had significant p < 0Ð05 decreases in concentrations of Ca2C 0Ð10 μmolc l 1 year 1 , Mg2C 0Ð07 μmolc l 1 year 1 , KC 0Ð01 μmolc l 1 year 1 , N...

Treatment of CuCl2 with a bis-benzimidazole-type ligand, p-bbiteb, afforded a new 2D coordination polymer bearing cationic Cu2L4 cages on the sheet framework. The regular arrangement of the cages created channel-like space for anions. The compound removed ClO4(-) and NO3(-) from aqueous solutions by exchange with Cl(-) in the channels.

Nitrate (NO3-) pollution in aquatic system is a worldwide problem. The temporal distribution pattern and sources of nitrate are of great concern for water quality. The nitrogen (N) cycling processes in a subtropical watershed located in Changxing County, Zhejiang Province, China were greatly influenced by the temporal variations of precipitation and temperature during the study period (Septembe...

Walvoord et al. (1) reported a large nitrate pool located deep ( 1 m) beneath desert soils. Two aspects of this work were particularly surprising: the large pool size, estimated to be up to 10 kilograms of nitrogen per hectare, as nitrate (kg N ha); and the shape of the nitrate profiles, which resembled the conservative solute-accumulation profiles of Cl more than typical nutrient depletion pro...

A new class of anion transporter named 'perenosins' consisting of a pyrrole linked through an imine to either an indole, benzimidazole or indazole is reported. The indole containing members of the perenosin family function as effective transmembrane Cl(-)/NO3(-) antiporters and HCl cotransporters in a manner similar to the prodigiosenes. The compounds reduce the viability of MDA-MB-231 and MCF-7.

Regulated assemblies from vesicles to micelles based on 1,3-alternate oxacalix[2]arene[2]triazine amphiphilic molecules were reported. The vesicular entities were responsive to anions and followed the selectivity in the order NO3(-) > Cl(-) > Br(-) > ClO4(-), driven by cooperative anion-π interactions and hydrogen bonding.