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Bioavailability and toxicity variation of benzo[a]pyrene in three soil-wheat systems: Indicators of soil quality
  • Yong Teng,
  • Qixing Zhou
Yong Teng
Nankai University
Author Profile
Qixing Zhou
Nankai University
Author Profile

Abstract

Benzo[a]pyrene (B[a]P) as a representative polycyclic aromatic hydrocarbons is concerned by global scientists in various fields, but its biological and biochemical actions in soil-wheat systems are still rarely reported. The B[a]P as a ubiquitous soil pollutant possesses varied contents in real environment, and herein was studied in systems of soil and wheat to obtain relative results to reveal their variations in different systems. Its bioavailability (extractability and bioaccumulation) and basic biological toxicity were tested based on three typical soil types (red, black, and brown) in China and spiked amounts (0.1, 1, and 10 mg/kg) with several orders of magnitude. Results showed that B[a]P concentrations in soil-wheat systems extracted by HPCD were insignificantly (p > 0.05) higher than Tenax-TA, and varied with soil types and spiked concentrations. Besides, the root and shoot length were mostly inhibited, in a range of -21.85%-26.35% and -0.48%-54.85%, respectively, by B[a]P in different soil types and increased with its increasing concentration. Comparatively, higher bioconcentration factor and translocation factor values were observed under lower group in red soil-wheat systems, and higher spiked groups in black and brown soil-wheat systems. Moreover, inhibitive effects posed by B[a]P were mainly targeted at wheat shoots in these soils. The simultaneous studies provided a comparable knowledge of B[a]P in ecosystems of different soil types combined with different plant species due to lots of variations, further to serve for contaminated soil remediation and sustainable agricultural management.

Peer review status:ACCEPTED

04 Dec 2020Submitted to Land Degradation & Development
07 Dec 2020Submission Checks Completed
07 Dec 2020Assigned to Editor
10 Dec 2020Reviewer(s) Assigned
28 Feb 2021Review(s) Completed, Editorial Evaluation Pending
28 Feb 2021Editorial Decision: Revise Major
30 Mar 20211st Revision Received
31 Mar 2021Submission Checks Completed
31 Mar 2021Assigned to Editor
03 Apr 2021Review(s) Completed, Editorial Evaluation Pending
04 Apr 2021Editorial Decision: Revise Minor
20 Apr 20212nd Revision Received
21 Apr 2021Submission Checks Completed
21 Apr 2021Assigned to Editor
22 Apr 2021Review(s) Completed, Editorial Evaluation Pending
26 Apr 2021Editorial Decision: Revise Minor
30 Apr 20213rd Revision Received
30 Apr 2021Submission Checks Completed
30 Apr 2021Assigned to Editor
30 Apr 2021Review(s) Completed, Editorial Evaluation Pending
01 May 2021Editorial Decision: Revise Minor
03 May 20214th Revision Received
04 May 2021Submission Checks Completed
04 May 2021Assigned to Editor
05 May 2021Review(s) Completed, Editorial Evaluation Pending
08 May 2021Editorial Decision: Accept