The present study describes a simple and highly selective method for separation, preconcentration and spectrophotometric determination of extremely low concentrations of lead. It is based on flotation of a complex of Pb(2+) ions and Alizarin yellow between aqueous and n-hexane interface at pH = 6. The proposed procedure is also applied for determination of lead in both tap water and prepared se...

The adsorption of the Alizarin Red S (ARS) and Patent Blue VF (PBVF) from aqueous solution onto agricultural waste mentha has been investigated. The effects of initial dye concentration, contact time, pH, temperature and ionic strength were studied in a batch system. ARS and PBVF adsorption onto mentha increased to minor extent with decreasing pH. Adsorption capacities of dyes increased with co...

The study was undertaken to evaluate the effect of paracetamol on skeleton in Wistar rats. The drug was administered orally, once a day, in three doses: P1--3.5 mg/kg, P2--35.0 mg/kg, P3--350.0 mg/kg. The foetuses were delivered by laparotomy on the 21st day of pregnancy and fixed in alcohol. The skeletons were stained with alizarin. Insignificant differences of bone malformations were found.

The title compound, C(15)H(10)O(4)·H(2)O, also known as alizarin 1-methyl ether monohydrate, was isolated from Morinda officinalis How. The anthraquinone ring system is almost planar, the dihedral angle between the two outer benzene rings being 3.07 (4)°. In the crystal structure, O-H⋯O hydrogen bonds link the organic mol-ecules and the water mol-ecules, forming a three-dimensional network.

A method for the determination of ofloxacin (OFL) has been developed, based on the enhancement of resonance light scattering (RLS) of OFL in the presence of alizarin violet 3B (AV3B). Under the experimental conditions, the RLS intensity of AV3B was greatly enhanced by adding OFL. At pH 5.09, the enhancement of the RLS intensity at 439.5 nm was proportional to the concentration of OFL in the ran...