Effects of the combined pollution of cadmium, lead and zinc on the phytoextraction efficiency of ryegrass (Lolium perenne L.)

Jun Zhang; Ningning Yang; Yani Geng; Jinhong Zhou; Ji Lei

doi:10.1039/c9ra01986c

Effects of the combined pollution of cadmium, lead and zinc on the phytoextraction efficiency of ryegrass (Lolium perenne L.)

RSC Adv. 2019 Jul 2;9(36):20603-20611. doi: 10.1039/c9ra01986c. eCollection 2019 Jul 1.

Authors

Jun Zhang^{1

2}, Ningning Yang¹, Yani Geng¹, Jinhong Zhou¹, Ji Lei¹

Affiliations

¹ Shaanxi Key Laboratory of Disaster Monitoring and Mechanism Simulation, College of Geography and Environment, Baoji University of Arts and Sciences Baoji 721013 P. R. China zhangjun1190@126.com gyn1977@126.com.
² Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of Education, Chang'an University Xi'an 710054 China.

Abstract

The effects of cadmium (Cd), lead (Pb) and zinc (Zn) combined pollution on the phytoextraction efficiency of ryegrass (Lolium Perenne L.) were investigated in this work. Orthogonal experimental design was adopted in pot test (composition and interaction). The results showed that, with the increase of heavy metal concentration, the accumulation of elements in ryegrass was increased. The order of enrichment in root was Cd > Pb > Zn, was Zn > Pb > Cd in the stem and leaf, and the order of total EF was Cd > Zn > Pb. Ryegrass revealed the strongest enrichment effect on soil Cd and a strong ability to transfer Zn. Besides, ryegrass showed good potential in phytoextraction heavy metal Cd pollution and Cd × Zn combined pollution.