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Effects of Lead and Arsenic in Soils from Former Orchards on Growth of Three Plant Species

Journal Article · · Environmental Toxicology and Chemistry
DOI:https://doi.org/10.1002/etc.5325· OSTI ID:1864888
 [1];  [1];  [1];  [2];  [1];  [3];  [4]
  1. Pacific Northwest National Laboratory Richland Washington USA
  2. Ecological Risk Rancho Murieta California USA
  3. US Forest Service Ely Nevada USA
  4. Pasco School District, Pasco Washington USA
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Abstract

Historical use of lead arsenate as a pesticide in former orchards of eastern Washington State (USA) has resulted in legacy lead (Pb) and arsenic (As) soil contamination. However, the impacts on plant growth in soils with residual Pb and As contamination have not yet been quantified. To this end, a comparative study of plant growth impacts was performed for native bluegrass ( Poa secunda ), invasive cheatgrass ( Bromus tectorum ), and buttercrunch lettuce ( Lactuca sativa ). Using standard plant growth protocols, germination frequency and biomass growth were measured over a wide range of Pb and arsenate concentrations, with maximum concentrations of 3400 and 790 mg kg −1 for Pb and As, respectively. Results indicated that only the biomass growth for all species decreased in soils with the highest concentrations of Pb and As in the soil, with no impacts on soils with lower residual Pb and arsenate concentrations. No impact on percentage of germination was observed at any soil concentration. These results can be used to determine site‐specific soil screening levels for use in ecological risk assessments for Pb and arsenate in soils. Environ Toxicol Chem 2022;41:1459–1465. © 2022 Battelle Memorial Institute. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
1864888
Alternate ID(s):
OSTI ID: 1869475
OSTI ID: 2469847
OSTI ID: 2527345
Report Number(s):
PNNL-SA--166900
Journal Information:
Environmental Toxicology and Chemistry, Journal Name: Environmental Toxicology and Chemistry Journal Issue: 6 Vol. 41; ISSN 0730-7268
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
United States
Language:
English

References (15)

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Accumulation of Lead and Arsenic by Lettuce Grown on Lead-arsenate Contaminated Orchard Soils journal September 2014

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Related Subjects

54 ENVIRONMENTAL SCIENCES
Arsenic
Environmental Sciences & Ecology
Environmental Toxicology
Hanford
Lead
Lead arsenate
Orchard
Pesticides
Phyotoxicity
Soil
Toxicology