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Purnia, India

Rao T.V.R.K.,Purnia College | Das M.,Purnia College
Asian Journal of Chemistry

Surgically removed urinary stones were procured from the local nursing homes. The stones were analyzed qualitatively for their mineral constituents. Thirty five stone samples, containing oxalate or phosphate or both, were selected for study. Infrared spectra of the selected stone samples were recorded in the range of 4000-500 cm-1 in KBr phase. Phosphate and oxalate bands were studied. Results revealed the presence of bridging and coordinating mode of oxalate and coordinating mode of phosphate in the stones. Water molecules in the stones have also been evidenced to be in the coordinated mode. Bonding of phosphate and oxalate groups in the urinary stones has been discussed in the light of the infrared data. Source

Rao T.V.R.K.,Purnia College | Choudhary V.K.,Purnia College
Asian Journal of Chemistry

Formation of solid solutions of hydroxyl apatites of calcium and some micronutrient metal ions viz., Mn2+, Fe2+, Ni 2+, Cu2+ or Zn2+ has been studied. Solid solutions of composition, Ca7M3(PO4) 6(OH)2 and Ca5M5(PO 4)6(OH)2 (where M = micronutrient metal) were prepared by co-precipitation method. Solid solutions were characterized by analytical studies. The molar g-atom ratio (Ca + M)/P was found to be closer to the theoretical value for hydroxyl apatites suggesting their homogeneity. X-ray diffraction studies showed the decrease of lattice parameter values and contraction of unit cell volume consequent upon substitution of micronutrient metal ion into the calcium hydroxyl apatite suggesting the formation of homogeneous solid solutions. Infrared spectra of solid solutions suggested a coordinated mode of phosphate. Covalence of cation-phosphate bonding seem to increase with the induction of trace metal ion to the apatite. Spectra further suggested the OH of solid solutions to be hydrogen bonded. Implications of the results in phosphate urolithology have been discussed. Source

Rao T.V.R.K.,Purnia College | Goswami J.,Purnia College
Asian Journal of Chemistry

Iodine nutritional status of the tribal communities under different age-group viz., 6-12, 13-18, 19-39 and 40 yr and above of Dumka district of Santhal Pargana Division of Jharkhand, India, has been studied. Urinary iodine excretion levels and serum protein-bound iodine levels were estimated. Iodine content of the common salt samples consumed by the tribals was determined. Goiter prevalence among the target population was also assessed. Over all median urinary iodine excretion level was found to be at 13.49 μg/dL and median serum protein-bound iodine level was at 5.1 μg/dL. 76 % of the common salt samples contained iodine at 15 ppm and above. Total goiter prevalence was found to be at 3.25 %. The results suggest that there is no biochemical iodine deficiency and the goiter prevalence is at very mild level in the target population. The tribals, however, should be further encouraged to consume iodized salt. Source

Rao T.V.R.K.,Purnia College | Yadav A.,Purnia College | Mishra K.K.,Purnia College
Asian Journal of Chemistry

Aluminium toxicity to an edible fresh water fish, Saccobranchus fossilis has been studied in aquarium model. Ten fishes were exposed to 50 ppm concentration of Al3+ in the form of aluminium sulphate for 50 days in the experimental set. Similar number of fishes were also studied in the control set. Mortality of the fishes was recorded. At the end the experiment, fishes were sacrificed and aluminium uptake by the tissues in different parts was studied. Results suggested that the exposure of fishes to aluminium (50 ppm) is definitely toxic. The upper part of the fish (brain and gills) were found to be the major sites of aluminium accumulation. The lower part (tail) showed the least aluminium accumulation. The total aluminium absorbed by the fish tissue was found to be 0.74 mg/g. The mortality of the fish was found to be 70% in the aluminium intoxicated water as compared to that of the control. Source

Aluminium uptake by the seeds of bengal gram (Cicer arietinum), pea (Pisum sativum) and horse gram (Dolicos biflorus) under different chemical milieu have been studied. Effect of aluminium absorption on the germination of seeds, as well as, the root and shoot length of the plants out of germinated seeds have also been studied. Effect of other cation viz., Ca 2+ and anions viz., malate, tartarate and citrate on the aluminium absorption have also been studied. The seeds were also grown in earthen pots in soil cultures, with soils mixed with different aluminium ion concentration. The shoot length, number of leaves as well as nature of roots were observed after a definite time interval. Results revealed an expression of toxicity by the seeds upon exposure to the aluminium ions in solution of different concentrations. The germination was severely affected upon deep as well as shallow soaking of seeds in Al 3+ solutions. Bengal gram germination was highly affected right from 100 ppm of Al 3+ only. At 100 ppm of Al 3+ it showed only 4 % germination, whereas pea and horse gram were relatively less affected by Al 3+ toxicity. With increasing Al 3+ concentration, all the three species of seeds increased Al uptake gradually. Comparative results of 24 and 48 h soaking time suggest that kinetically 24 h period seem to be sufficient time to express full toxicity and maximum Al 3+ uptake. The plants germinated out of intoxicated seeds showed a depressed root and shoot length. Presence of Ca 2+ or chelating anions like malate, tartarate and citrate could not alleviate aluminium toxicity to any significant extent for any of the seeds. In soil culture the Al toxicity was also expressed, however, to a lesser extent than that in solution intoxication. The morphogenic aspects such as shoot length and number of leaves were severely affected, particularly in case of horse gram, in soil culture. Source

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