Geographical variations in arsenic contents in rice plants from Latin America and the Iberian Peninsula in relation to s
- PDF / 2,651,770 Bytes
- 22 Pages / 547.087 x 737.008 pts Page_size
- 102 Downloads / 196 Views
(0123456789().,-volV) ( 01234567 89().,-volV)
ORIGINAL PAPER
Geographical variations in arsenic contents in rice plants from Latin America and the Iberian Peninsula in relation to soil conditions X. L. Otero . O. Atiaga . R. Estrella . W. Tierra . J. Ruales . L. Zayas . V. Souza Jr. . T. O. Ferreira . G. N. No´brega . D. P. Oliveira . H. M. Queiroz . L. M. Nunes
Received: 31 March 2020 / Accepted: 17 April 2020 Ó Springer Nature B.V. 2020
Abstract Arsenic is a ubiquitous, toxic element that is efficiently accumulated by rice plants. This study assessed the spatial variability in the total As (tAs) contents and organic and inorganic forms in different types of rice, plant parts (husk, stem, leaves and phytoliths) and residues. Samples were collected in different countries in Latin America (Ecuador, Brazil and Peru) and the Iberian Peninsula (Spain and Portugal). The tAs content in commercial polished rice from the Latin American countries was similar Electronic supplementary material The online version of this article (https://doi.org/10.1007/s10653-020-00581-8) contains supplementary material, which is available to authorized users. X. L. Otero (&) O. Atiaga Departamento de Edafoloxı´a e Quı´mica Agrı´cola, Facultade de Bioloxı´a, CRETUS Institute, Universidade de Santiago de Compostela, Campus Sur, 15782 Santiago de Compostela, Spain e-mail: [email protected] O. Atiaga R. Estrella Departamento de Ciencias de la Tierra y la Construccio´n, Universidad de las Fuerzas Armadas ESPE, Av. General Rumin˜ahui s/n, P.O. Box 171-5-231B, Sangolquı´, Ecuador W. Tierra J. Ruales Departamento de Ciencia de los Alimentos y Biotecnologı´a, Escuela Polite´cnica Nacional, Quito, Ecuador
(0.130–0.166 mg kg-1) and significantly lower than in the rice from the Iberian countries (0.191 ± 0.066 mg kg-1), and together, the tAs concentration in brown rice (236 ± 0.093 mg kg-1) was significantly higher than in polished and parboiled rice. The inorganic As (iAs) content in rice was similar in both geographical regions, and the aforementioned difference was attributed to dimethylarsinic acid (DMA). The relative abundance of organic species increased as the tAs content in rice grain increased. A meta-analysis of our and previously reported data confirmed the negative correlation between iAs/tAs and tAs. At low tAs concentrations, inorganic forms are dominant, while at higher values L. Zayas T. O. Ferreira H. M. Queiroz Departamento de Cieˆncia do Solo, Escola Superior de Agronomia Luiz de Queiroz (ESALQ), Universidade de Sa˜o Paulo, Piracicaba, Brazil V. Souza Jr. ´ rea de Solo, Universidade Departamento de Agronomia, A Federal Rural de Pernambuco, Recife, Brazil G. N. No´brega Departamento de Geoquı´mica, Universidade Federal Fluminense, Outeiro de Sa˜o Joa˜o Batista s/n8, Campus do Valonguinho, Centro, Nitero´i, Rio de Janeiro 24020-14, Brazil D. P. Oliveira Graduate Course in Ecology and Natural Resources, Department of Biology, Federal University of Ceara´ – UFC, Fortaleza, CE, Brazil
123
Environ Geochem Health
(tAs [ 0.30
Data Loading...
