Journal
SCIENCE OF THE TOTAL ENVIRONMENT
Volume 482, Issue -, Pages 252-259Publisher
ELSEVIER
DOI: 10.1016/j.scitotenv.2014.03.006
Keywords
Arsenic; Seaweed fertiliser; Golf course; Soil; Groundwater; Risk characterisation
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The use of seaweed fertilisers in sports green maintenance has become a common practice across the globe due to its image as an eco-friendly alternative to chemical fertilisers. The aim of this study was to characterise the risk of human exposure to arsenic (As), via dermal absorption, from golfing activities on a private golf course in the UK, where As contaminated seaweed fertiliser (similar to 100 mg/kg d.wt) is applied. This was fulfilled by, 1) determining As concentrations in shallow soils with GIS geo-statistical analysis, 2) measuring As concentrations from an on-site borehole groundwater well, and (3) developing a risk assessment calculation for golfing activities based on field and questionnaire data. Total As concentrations in shallow soils were less than the UK threshold for domestic soils, however, frequent and sustained dermal contact between site-users and surface soil attributed to a maximum carcinogenic risk value of 2.75 x 10(-4), which is in the upper limit of the acceptable risk range. Arsenic concentrations in underlying groundwater exceeded the WHO's permissible drinking water standard, demonstrating the risk of groundwater contamination following the application of seaweed fertiliser to golf course soils. This is the first risk study on dermal As absorption via the application of a seaweed fertiliser. (C) 2014 Elsevier B.V. All rights reserved.
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