Now showing items 1-10 of 26
Use of Silica with Immobilized 2-Nitrozo-1-Naphthol-4-Sulfonic Acid for the Sorption–Photometric Determination of Palladium
Silica modified with 2-nitroso-1-naphthol-4-sulfonic acid (NNS), quantitatively extracting palladium( II) from solutions in the pH range 1–8, is proposed for the preconcentration and photometric determination of palladium(II) ...
Preconcentration and Determination of Nickel ions using Silica with Functional Groups of Sulfonic Derivatives of Nitroso Naphthols
Silica based adsorbents modified with polyhexamethylene guanidine and sulfonic derivatives of nitroso naphthols - nitroso-N salt (NNS) and nitroso-R salt (NRS), have been proposed for preconcentration and solid-phase photometric ...
Determination of metals in natural waters by inductively coupled plasma optical emission spectroscopy after preconcentration on silica sequentially coated with layers of polyhexamethylene guanidinium and sulphonated nitrosonaphthols
A series of complexing adsorbents is prepared by coating silica particles with linear polyhexamethylene guanidinium (PHMG) chloride followed by saturation with a number of sulphonated nitrosonaphthols reagents electrostatically ...
Structure of bis(2-Thiobarbiturate)Tris (2,2-Bipyridyl)Nickel(II) Hexahydrate
The [Ni(Bipy) 3 ](Htba) 2 ·6H 2 O (I) complex (Bipy is 2,2′-bipyridyl, H 2 tba is 2-thiobarbituric acid) is synthesized and its structure is determined by single crystal XRD (cif-file CCDC No. 1836529). The crystals of I ...