期刊论文

Ding, D.

中文

环境科学研究

1001-6929

2017

30

8

1238-1245

10.13198/j.issn.1001-6929.2017.02.53

U1401231:国家自然科学基金 2016Sk2041:湖南省科技厅重点项目 14B150:湖南省教育厅优秀青年项目

本校为第一且通讯机构

为了研究陆生植物博落回 (Macleaya Cordata)对不同化学形态铀的富集特征,采用Visual MINTEQ地球化学平衡软件设计了五种含不同化学形态铀〔UO_2~(2 +)、CaUO_2 (CO_3 )_3~(2 -)、UO_2Cit~-、 (UO_2 )_2 (EDTA)_2~(4 -)和UO_2HPO_4〕的培养液,开展水培试验.博落回在这五种培养液中分别培养1、5、10、15、20和25 d后,测定其株高、根长和干质量,并用电感耦合等离子体质谱仪 (ICP-MS)测定其地上部分和根部的w(铀).结果表明:在不同化学形态铀胁迫下,博落回株高无显著差异,UO_2HPO_4可促进博落回根的生长,而 (UO_2)_2 (EDTA)_2~(4 -)降低了博落回的干质量.并且,博落回根部对不同化学形态铀的富集能力...

In order to investigate the accumulation of different chemical species of uranium (U) in Macleaya cordata,the geochemical equilibrium software Visual MINTEQ was used to design five nutrient solutions containing UO_2~(2 +),CaUO_2 (CO_3 )_3~(2 -),UO_2Cit~-, (UO_2 )_2 (EDTA)_2 ~(4 -) and UO_2HPO_4,respectively,and hydroponic experiments on M. cordata were conducted in the nutrient solutions. The shoot heights,root lengths and dry weights of M. cordata were measured after it was cultured in the nutrient solutions for 1,5,10,15,20 and 25 days,respectively,and the U contents in its shoots and roots ...