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Recent observations of WSr and 13'Cs deposition at the Meteorolog$aI Research Institute, Tsukuba, are presented. The annual deposition of Sr and 13'Cs in the 1990s was around 0.15 and 0.3 Bq rn., respectively. Although a spring explain this seasona P eak was found in the deposition, it is difficult lo pattern only by the stratospheric fallout. The annual deposition trend of I3 Cs was found IO be well fitted by the stratospheric constant and an additional constant term. The variation in the ratios of the radioactivity and corresponding stable elements did not show the maxima in the deposition peak months in Spring.
Reduction of nltrlc oxlde by ectlvated carbons as both support and reducing agent Gao, Z. et al., Cuihua Xuebao, 1996, 17, (2), 117-122. (In Chinese) The paper describes how activated carbons from coconut shell, hawthorn nut, mountain peach nut and coal were used in the reduction of NO as both support and reducing agents.
Reduction of sulfur dloxlde to sulfur Reimert, R. et al., (Assigned lo) Metallgesellschafi AG, EUR. Pat.
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Three samples of activated carbons of various origins were used in this study. The initial samples were oxidized with nitric acid to introduce oxygen-containing groups. The surface of sorbents was characterized using sorption of nitrogen, Boehm and potentiometric titrations, DRIFTS, and thermal anal