نتایج جستجو برای: ammonium ion
تعداد نتایج: 227565 فیلتر نتایج به سال:
A system which combines column switching and concentration was developed. A binary eluent mechanism was developed to study the effect of high sample concentration matrix on retention time shifts of the trace analyte. Separation conditions were chosen according to this mechanism to reduce the retention time shift of ammonium in the presence of high concentration sodium ion: high concentration su...
Background: Surface water and groundwater pollution with various forms of nitrogen such as ammonium and nitrate ions is one of the main environmental risks. The major objectives of this study were to evaluate the capacity of natural zeolite (clinoptilolite) to remove NO3- and NH4+ from polluted water under both batch and column conditions. Methods: The laboratory batch and column experiments we...
Ternary mixtures of Bromocresol Green (BCGH), Benzethonium Chloride (BZ(+)Cl(-)), and Quinine (Q) in dichloromethane (CH(2)Cl(2) for ratios 1:>/=1:>/=1 (BCGH(2):BZ(+)Cl(-):Q) generate species BCGH(-)BZ(+), BZ(+)BCG(-)-H-Q) and BCG(2-) (BZ(+))(2) in chemical equilibrium; whose thermodynamic parameters are determined. A new method to study ternary mixtures in a non-polar solvent has been given an...
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