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論文

Nitrate facilitates cadmium uptake, transport and accumulation in the hyperaccumulator ${it Sedum plumbizincicola}$

Hu, P.*; 尹 永根; 石川 覚*; 鈴井 伸郎; 河地 有木; 藤巻 秀; 井倉 将人*; Yuan, C.*; Huang, J.*; Li, Z.*; et al.

Environmental Science and Pollution Research, 20(9), p.6306 - 6316, 2013/09

 被引用回数:31 パーセンタイル:24.63(Environmental Sciences)

${it Sedum plumbizincicola}$, a species in the family Crassulaceae, has been reported to be a Cd hyperaccumulator exhibiting fast growth, large biomass, asexual reproduction and perennial habit and showing remarkable potential in the phytoextraction of Cd from polluted soils. The aims of this study are to investigate whether and how the nitrogen form (nitrate (NO$$_{3}$$$$^{-}$$) versus ammonium (NH$$_{4}$$$$^{+}$$)) influences cadmium (Cd) uptake and translocation and subsequent Cd phytoextraction by the ${it S. plumbizincicola}$. This is the first report of successful visualisation and quantification of Cd uptake and root-to-shoot translocation in intact plants of the hyperaccumulator species ${it S. plumbizincicola}$ supplied with different forms of inorganic N using positron-emitting tracer imaging system (PETIS), a real-time imaging method.

論文

Evaluating of arsenic(V) removal from water by weak-base anion exchange adsorbents

Awual, M. R.; Hossain, M. A.*; Shenashen, M. A.*; 矢板 毅; 鈴木 伸一; 城 昭典*

Environmental Science and Pollution Research, 20(1), p.421 - 430, 2013/01

 被引用回数:110 パーセンタイル:2.73(Environmental Sciences)

The weak-base adsorbents clarified that these are selective to arsenic(V) over competing of chloride, nitrate and sulfate anions. The solution pH played an important role in arsenic(V) removal and higher pH can cause lower adsorption capacities. Low concentration level of arsenic(V) also removed by these adsorbents even at high flow rate. Adsorbed arsenic(V) on adsorbents was quantitatively eluted with 1 M HCl acid and regenerated into hydrochloride form simultaneously for next adsorption operation after rinsing with water.

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