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Acetamiprid induces decrease in body weight and clinical symptoms like respiratory depression, sitting in the corner, diarrhea, depression, dullness etc. in mice at the different dose levels (considering the LD50 value). Test mice administered with acetamiprid show significant decrease in overall hematological profile. Acetamiprid at a particular safe dose level can be considered non-toxic to the experimental animal.

The present study was carried out to assess the toxicological effect of acetamiprid, an insecticide of neonicotinoid group on clinical and serum hematobiochemical parameters of mice. The experimental animals were divided into four different groups of equal number of animals and the first group was considered as Control. It was found that acetamiprid administered @ 40 mg/kg body weight per day (1/5th of LD% value) for a period of 28 days induces prominent toxic symptoms along with hematological and biochemical effect in mice. Acetamiprid induced mice showed decrease in body weight and clinical symptoms like respiratory depression, sitting in the corner, diarrhea, depression, dullness etc. are observed at the different dose levels. Test mice administered with acetamiprid showed significant decrease in overall hematological profile. In the present study, it was found that acetamiprid @ 10 mg/ kg body weight (1/20th of LD50 value) did not produce significant changes in hematological and biochemical values. So, it was considered that experimental dose of 10 mg/kg to be non-toxic and 40 mg/kg body weight to be the toxic dose of acetamiprid in mice.

The adsorption of phosphate ions on chromium metal powder from aqueous solutions of sodium dihydrogen phosphate labelled with 32P has been studied as a function of concentrative (10-3 to 10-6 mol l-1), temperature (303-323 K), and pH (3.5-10.6) of the adsorptive solution. The time for the equilibrium establishment was found to be about 4 hours and it is dependent on the solution acidity. The smooth and continuous growth of phosphate adsorption follows the first order kinetics and the rate constants are found to be of the order of 10-3 min-1. The results show that the adsorption in the system under study obeys the Freundlich isotherm. The increase in temperature from 303 K to 323 K does not effect the process markedly. The adsorption kinetics of phosphate ions is highly dependent on pH of the adsorptive solution. On the basis of the present data the nature and mechanism of the adsorption are discussed.

The adsorption property of cobalt metal powder for phosphate ions (using 32 P as radiotracer) in dilute aqueous solution has been investigated. The dependence of adsorption on time of contact, phosphate concentration, temperature and solution pH is established. Relative fraction of adsorption is found to increase with decreasing adsorptive concentration and a nearly complete adsorption (∼100%) is achieved at 10 −6 M solution. Over a wide range of concentrations (10 −2 M–10 −6 M), the applicability of the Freundlich isotherm is established. The process is apparently independent of temperature (303–318 K). At a concentration of 10 −6 M, adsorption is also found to be practically constant in the range of pH 3.5–9.0, followed by a decrease at higher pH. SEM results reveal that the surface coverage increases with an increase in phosphate concentration. The results indicate that the involved process is chemical in nature.

An extractive spectrophotometric procedure has been developed for the determination of palladium (II) at microgram levels. The palladium(II) chelate of 7-iodo-8-hydroxyquinoline-5-sulphonic acid is extracted into n-butanol. Extraction is maximal (95%) from 0.2M perchloric acid. Beer's law is valid at 430 nm over a wide range of palladium concentration from 2.5 ppm. The molar absorptivity is 958 1.mole−1.mm−1. The system can tolerate a large excess of Co(II), Ni(II), Rh(III), Pt(IV), Cr(III), W(VI), chloride, phosphate, citrate and tartrate. Small quantities of Ru(III), IR(III) and EDTA do not interfere, but serious interference is caused by Fe(III), V(V), Mo(VI) and Os(VIII).