Abstract:
:In this study, concentrations of nickel (Ni) were quantified in the soils and plants in the agricultural areas of Salcedo watershed in Eastern Samar Island, Philippines. The quantity of total Ni in soils (TS-Ni) was significantly high with a mean of 1,409 mg kg(-1), while the soil available Ni (SA-Ni) was low with a mean of 8.66 mg kg(-1). As the levels of TS-Ni in the Salcedo watershed greatly exceeded the maximum allowable concentrations for agricultural soils, the site is not suitable for agricultural purposes. Despite significant TS-Ni levels, SA-Ni levels were very low due to tight binding between Ni and soil components. Consequently, all plants investigated did not meet the criterion for a Ni hyperaccumulator plant with low Ni contents (mean TP-Ni of 14.7 mg kg(-1)). Comparison of Ni levels between food plants and its recommended daily intake (RDI) suggests that consumption of food-plants grown in the study area is unlikely to pose health risks. However, caution must be taken against combined consumption of food plants with high Ni levels or their prolonged consumption, as it can induce accumulation of Ni above RDI.
journal_name
Environ Monit Assessjournal_title
Environmental monitoring and assessmentauthors
Susaya JP,Kim KH,Asio VB,Chen ZS,Navarrete Idoi
10.1007/s10661-009-1067-6subject
Has Abstractpub_date
2010-08-01 00:00:00pages
505-14issue
1-4eissn
0167-6369issn
1573-2959journal_volume
167pub_type
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