Comparison among soil additives for enhancing Pteris vittata L.: Phytoremediation of As-contaminated soil. Issue 13 (10th November 2018)

• Record Type: Journal Article
• Authors: Yang, Jun; Yang, Shu-Shen; Lei, Mei; Yang, Jun-Xing; Wan, Xiao-Ming; Chen, Tong-Bin; Wang, Xiao-Ling; Guo, Guang-Hui; Guo, Jun-Mei; Liu, Shu-Qing
• Is Part Of: International journal of phytoremediation. Volume 20:Issue 13(2018)
• Page Start: 1300
• Page End: 1306
• Publication Date: 2018-11-10
• Subjects: Arsenic -- bioavailability -- citric acid -- phosphate -- soil additive -- uptake; Phytoremediation -- Periodicals; 628.5
• DOI: 10.1080/15226514.2017.1319325
• Languages: English
• ISSNs: 1522-6514

Abstract

Abstract: Pot experiments were conducted to assess the effects of monoammonium phosphate (NH4 H2 PO4 ) and citric acid (CA) on the arsenic uptake of Chinese brake fern ( Pteris vittata L. in two typical arsenic-contaminated soils i.e. fluvo-aquic and brown) from Jiyuan (JY) City and Baoding (BD) City in Northern China. NH4 H2 PO4 improved the biomass of P. vittata, whereas CA exerted no significant influence. NH4 H2 PO4 and CA both increased the arsenic uptake of P. vittata by 6.08 and 2.72 times, respectively, in fluvo-aquic soil and 4.20 and 2.52 times, respectively, in brown soil. Moreover, CA, but not NH4 H2 PO4, promoted the transfer of arsenic from the root to the frond. NH4 H2 PO4 and CA increased Olsen's arsenic contents in the soils and promoted the transformation of residual arsenic and crystalline Fe/Al oxide-bound arsenic to nonspecifically and specifically sorbed arsenic. This study proved that P. vittata can be used in Northern China. Applying NH4 H2 PO4 and CA can enhance the effectiveness of P. vittata in the phytoremediation of arsenic-contaminated soils.