PHYSICOCHEMICAL AND HEAVY METAL ANALYSIS OF THE LEAF, STEM AND FLOWER EXTRACTS OF SPHENOCLEA ZEYLANICA

ABSTRACTHerbal traditional medicines play a principal role in health care programs especially in developing countries.WHO recommends various physicochemical and phytochemical evaluation parameters for quality control of medicinal plants are recommended by WHO.In pharmacognostic studies, identifying controversial species of plants, authentication of commonly used traditional medicinal plants through morphological, phytochemical and physicochemical analysis are done. In this study, physicochemical parameters, florescence and heavy metals of methanol extract of leaves, stem and flower of Sphenoclea zeylanica were conducted. It was seen that the properties and the results observed were significant and hence the plant S.zeylanicacan be used to formulate drugs to cure various diseases if the bioactive components are analyzed. Key words :Sphenoclea zeylanica physicochemical parameters, florescence and heavy metal

Bioaccumulation of lead in milk of buffaloes from Cooum river belt in Chennai

Abstract: Bioaccumulation of heavy metals has been studied in aquatic flora and fauna to a greater extent than in terrestrial animals. Hence, this study was performed to find out whether lead was excreted in the milk of buffaloes reared near the Cooum belt which was fed by contaminated feed and polluted water from the nearby wells. The concentrations of lead in milk of buffaloes fed under farm conditions were also studied. The results have indicated that the ground water (0.32 µg ml -1 ) and feed (8.62 µg g -1 ) are the sources of lead in buffalo milk (0.06 µg ml -1 ). It revealed that one unit increases of lead in water and feed corresponded to an increase of 77.38 and 37.77 units respectively in milk of buffaloes reared near the contaminated watercourse. However, the milk of buffaloes from Central Cattle Breeding Farm is free from lead (0.013 µg ml -1 ) pollution. The reason for bioaccumulation of lead in the milk of buffaloes reared near the sewage carrying river is due to drinking of contaminated ground water from wells and bore-wells dug near the river

The corrosion inhibition performance of polyacrylic acid with Potassium Sodium Tartrate and Zn 2+ for corrosion control of mild steel in aqueous solution

ABSTRACT. The goal of studying corrosion process is to find means of minimizing corrosion or prevent it from occurring. The use of inhibitors is one of the most popular methods for corrosion protection. A protective film has been formed on the surface of the mild steel in a neutral aqueous environment using a synergistic mixture of an eco-friendly inhibitor viz., Potassium Sodium Tartrate (SPT) along with polyacrylic acid (PAA) and Zn 2+ ions. The inhibiting effect of SPT, PAA and Zn 2+ ions have been investigated by gravimetric studies, Potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The investigations revealed that SPT acts as an excellent synergist in corrosion inhibition. Optimum concentrations of all the three components of the ternary formulation are established by gravimetric studies. Potentiodynamic polarization studies inferred that this mixture functions as a cathodic inhibitor. EIS studies of the metal/solution interface indicated that the surface film is highly protective against the corrosion of mild steel. Surface characterization techniques (FTIR, SEM, AFM) are also used to ascertain the nature of the protective film. The mechanical aspect of corrosion inhibition is proposed