The impact of EDTA on lead distribution and speciation in the accumulator Sedum alfredii by synchrotron X-ray investigation.
The impact of EDTA on lead distribution and speciation in the accumulator Sedum alfredii by synchrotron X-ray investigation.
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通过同步加速器 X 射线研究 EDTA 对蓄能器景天中铅分布和形态的影响。
DOI：
10.1016/j.envpol.2010.11.020
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发表时间：
2011-03
影响因子：
8.9
通讯作者：
Brown, P
中科院分区：
文献类型：
--
作者：
Labavitch, J;Lu, L.L;He, Z.L;Huang, H.G.;Tian, S.K;Liao, H.B;Yang, X.E;Brown, P
采用同步加速器x射线研究了EDTA-Pb和Pb(NO3)2环境中生长的蓄积体景天（Sedum alfredii）组织中铅的体内定位和形态。EDTA-Pb溶液的存在显著降低了紫花苜蓿体内Pb的积累。铅在不同处理下均优先定位于维管束，但EDTA处理下铅的浓度较低。铅在植物中主要以铅细胞壁复合物的形式存在，而不考虑其供应形式。然而，EDTA-Pb处理时，Pb - edta复合物的比例相对较高，而在离子Pb培养时，Pb3(PO4)2、苹果酸铅和Pb - gsh的混合物的比例相对较高。这些结果表明，EDTA不会增加铅的内部迁移率，尽管可溶性的铅- EDTA复合物可以在紫荆植株内运输和积累。
The in vivo localization and speciation of lead (Pb) in tissues of the accumulator Sedum alfredii grown in EDTA–Pb and Pb(NO3)2was studied by synchrotron X-ray investigation. The presence of EDTA–Pb in solution resulted in a significant reduction of Pb accumulation in S. alfredii. Lead was preferentially localized in the vascular bundles regardless of treatments but the intensities of Pb were lower in the plants treated with EDTA. Lead was predominantly presented as a Pb-cell wall complex in the plants regardless of its supply form. However, a relatively high proportion of Pb was observed as Pb–EDTA complex when the plant was treated with EDTA–Pb, but as a mixture of Pb3(PO4)2, Pb–malic, and Pb–GSH when cultured with ionic Pb. These results suggest that EDTA does not increase the internal mobility of Pb, although the soluble Pb–EDTA complex could be transported and accumulated within the plants of S. alfredii.
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影响因子：
4.2
作者：
Yong Xu;N. Yamaji;R. Shen;J. Ma
通讯作者：
Yong Xu;N. Yamaji;R. Shen;J. Ma
影响因子：
11.4
作者：
H. Bing;E. YangXiao;Ni Zhong;Weizheng Zhang;Long Xian;Ye Zheng Qian
通讯作者：
H. Bing;E. YangXiao;Ni Zhong;Weizheng Zhang;Long Xian;Ye Zheng Qian
DOI：
--
发表时间：
1995-05
期刊：
--
影响因子：
--
作者：
H. Marschner
通讯作者：
H. Marschner
影响因子：
8.9
作者：
do Nascimento, CWA;Amarasiriwardena, D;Xing, BS
通讯作者：
Xing, BS
影响因子：
6.9
作者：
Lasat, MM;Pence, NS;Kochian, LV
通讯作者：
Kochian, LV