Hyperaccumulation and transport mechanism of thallium and arsenic in brake ferns (Pteris vittata L.): A case study from mining area

Wei, Xudong1; Zhou, Yuting1; Tsang, Daniel C.W.2; Song, Lan3; Zhang, Chaosheng4; Yin, Meiling1; Liu, Juan1,2; Xiao, Tangfu1; Zhang, Gaosheng1; Wang, Jin1,5

2020

10.1016/j.jhazmat.2019.121756

Journal of Hazardous Materials   影响因子和分区

18733336

1873-3336

Both thallium (Tl) and arsenic (As) bear severe toxicity. Brake fern (Pteris vittata L.) is well-known for its hyperaccumulation capacity of As, yet its role on Tl accumulation remains unknown. Herein, brake ferns growing near an As tailing site in Yunnan, Southwestern China are for the first time discovered as a co-hyperaccumulator of both Tl and As. The results showed that the brake ferns extracted both As and Tl efficiently from the soils into the fronds. The studied ferns growing on Tl and As co-polluted soils were found to accumulate extremely high levels of both As (7215–11110 mg/kg) and Tl (6.47–111 mg/kg). Conspicuously high bio-accumulation factor (BCF) was observed for As (7.8) and even higher for Tl (28.4) among these co-hyperaccumulators, wherein the contents of As and Tl in contaminated soils were 1240 ± 12 and 3.91 ± 0.01 mg/kg, respectively. The applied advanced characterization techniques (e.g. transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS)) indicated a preferential uptake of Tl(I) while simultaneous accumulation of As (III) and As(V) from the Tl(I)/Tl(III)-As (III)/As(V) co-existent rhizospheric soils. The findings benefit the phytoremediation practice and pose implications for managing and restoring Tl-As co-contaminated soils in other countries.
© 2019 Elsevier B.V.

Thallium pollution Arsenic mining Soil remediation Chinese brake fern Speciation/bioavailability

EI ; SCI

英语

其他

Guangzhou Medical University[BJ201709] ; Natural Science Foundation of Guangdong Province[2017A030313247] ; National Natural Science Foundation of China[U1612442]

Engineering ; Environmental Sciences & Ecology

Engineering, Environmental ; Environmental Sciences

WOS:000524462500032

Elsevier B.V.

20195107881867

Bioremediation ; Brakes ; High resolution transmission electron microscopy ; Soil conservation ; Soils ; Thallium ; Thallium compounds ; X ray photoelectron spectroscopy

Environmental Impact and Protection:454.2 ; Soils and Soil Mechanics:483.1 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Mechanical Drives and Transmissions:602 ; Optical Devices and Systems:741.3

ENGINEERING

EV Compendex

1.Institute of Environmental Research at Greater Bay, Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, and School of Environmental Science and Engineering, Guangzhou University, Guangzhou; 510006, China
2.Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
3.Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen; 518055, China
4.International Network for Environment and Health, School of Geography and Archaeology & Ryan Institute, National University of Ireland, Galway, Ireland
5.Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, Guangzhou; 510006, China

Wei, Xudong,Zhou, Yuting,Tsang, Daniel C.W.,et al. Hyperaccumulation and transport mechanism of thallium and arsenic in brake ferns (Pteris vittata L.): A case study from mining area[J]. Journal of Hazardous Materials,2020,388.

Wei, Xudong.,Zhou, Yuting.,Tsang, Daniel C.W..,Song, Lan.,Zhang, Chaosheng.,...&Wang, Jin.(2020).Hyperaccumulation and transport mechanism of thallium and arsenic in brake ferns (Pteris vittata L.): A case study from mining area.Journal of Hazardous Materials,388.

Wei, Xudong,et al."Hyperaccumulation and transport mechanism of thallium and arsenic in brake ferns (Pteris vittata L.): A case study from mining area".Journal of Hazardous Materials 388(2020).