https://scholars.lib.ntu.edu.tw/handle/123456789/572718
Title: | Comparison of As accumulation and speciation in water spinach (Ipomoea aquatica Forssk.) grown in As-elevated soils under flooding versus upland conditions | Authors: | Liao Y.-J Syu C.-H DAR-YUAN LEE |
Keywords: | Floods; Health risks; Soils; Tropics; Vegetables; Aquatic vegetable; Arsenic accumulation; Arsenic levels; Condition; Fe plaques; Flooded conditions; Floodings; Inorganic arsenic; Water spinachs; Waters managements; Water management; arsenic; arsenic; arsenic; comparative study; flooding; health risk; porewater; speciation (chemistry); vegetable; water management; adolescent; adult; aged; Article; bioaccumulation; child; concentration (parameter); controlled study; estimated daily intake; flooding; health hazard; human; Ipomoea aquatica; nonhuman; normal human; plant tissue; shoot; species differentiation; water management; Ipomoea; Oryza; soil; soil pollutant; vegetable; Ipomoea aquatica; Arsenic; Humans; Ipomoea; Oryza; Soil; Soil Pollutants; Vegetables | Issue Date: | 2021 | Journal Volume: | 415 | Source: | Journal of Hazardous Materials | Abstract: | Water spinach (Ipomoea aquatica Forssk.) is a popular semi-aquatic vegetable with high arsenic (As) accumulation capability in tropical and subtropical areas, and it can grow under both flooding and upland conditions. Because only few studies addressed the dietary As risk of vegetable consumption, this study investigated the accumulation and speciation of As in the water spinach, and the human health risk of consuming this crop grown in different water managements. Pot experiments were conducted in two soils with different As levels under both flooded and upland conditions. The results showed that As concentrations, mainly inorganic As, in soil pore water and shoots under flooded conditions increased 2.05- to 5.11-fold and 1.30- to 2.55-fold respectively as compared with upland conditions. Even though Fe plaque formation on the root surface was higher under flooded conditions than under upland conditions, it still cannot act as an effective barrier to sequester As released from flooded soils into plant tissue. The dietary risk of consuming inorganic As through water spinach planted in flooded soils was higher than in upland soils, especially in high-As-level soils. This suggests that in As-elevated soils, water spinach should be planted in upland conditions rather than in flooding conditions. ? 2021 Elsevier B.V. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85103101540&doi=10.1016%2fj.jhazmat.2021.125711&partnerID=40&md5=84c889d134a568bf4a27f9755f2469e4 https://scholars.lib.ntu.edu.tw/handle/123456789/572718 |
ISSN: | 3043894 | DOI: | 10.1016/j.jhazmat.2021.125711 | SDG/Keyword: | Floods; Health risks; Soils; Tropics; Vegetables; Aquatic vegetable; Arsenic accumulation; Arsenic levels; Condition; Fe plaques; Flooded conditions; Floodings; Inorganic arsenic; Water spinachs; Waters managements; Water management; arsenic; arsenic; ars |
Appears in Collections: | 農業化學系 |
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