Influence of irrigation methods on arsenic speciation in rice grain

Spanu, Antonino; Langasco, Ilaria; Barracu, Francesco; Deroma, Mario; López-Sánchez, José Fermı́n; Mara, Andrea; Meloni, Paola; Pilo, Maria Itria; Spano, Nadia; Sanna, Gavino

doi:10.1016/j.jenvman.2022.115984

Cited by 10 publications

(4 citation statements)

References 52 publications

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“…This was consistent with the results in which MMA was below 10 µg/kg in all the analyzed rice, rice crackers, rice-based infant cereal, and corn-based infant cereal [26]. Although the amount of MMA is usually low or negligible [27], some MMA could exist in the husk, where inorganic and organic species have an equal proportion(%), as assessed by X-ray absorption near-edge spectroscopy [28]. The low MMA revealed by our data was consistent with the reports of Jia-Yi Chen et al [6] and Meharg et al [29].…”

Section: Data Availability Statementsupporting

confidence: 91%

Arsenic Contents, Speciation and Toxicity in Germinated Rice Alleviated by Selenium

Zheng

Hong

Zhang

et al. 2023

Foods

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Rice can accumulate more organic and inorganic arsenic (iAs) than other crop plants. In this study, the localization of As in rice grains was investigated using High Performance Liquid Chromatography-Inductively Coupled Plasma Mass Spectrometry (HPLC-ICP-MS) based on 26 rice varieties collected from two provinces. In all the samples, the total As contents in polished rice were 0.03–0.37 mg/kg, with average values of 0.28 and 0.21 mg/kg for two sample sets. The results of the determination of arsenic speciation in different components of rice grain showed that in the polished and brown rice the mean value of arsenite (As(III)) was nearly twice than that of arsenate (As(V)). The regional difference was observed in both total As contents and As speciation. The reason may be that As(III) is more mobile than As(V) in a dissociated form and because of soil properties, rice varieties, and the growing environment. The proportion of iAs and the total As in rice bran was higher than that in polished rice, and this is because As tends accumulate between the husk and the endosperm. In our study, selenium could alleviate the risk of arsenic toxicity at the primary stage of rice growth. Co-exposure to As and Se in germinated rice indicated that the reduction in As accumulation in polished rice reached 73.8%, 76.8%, and 78.3% for total As, As(III), and As(V) when compared with rice treated with As alone. The addition of Se (0.3 mg/kg) along with As significantly reduced the As amount in different parts of germinated rice. Our results indicated that Se biofortification could alleviate the As accumulation and toxicity in rice crops.

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Section: Data Availability Statementsupporting

confidence: 91%

Arsenic Contents, Speciation and Toxicity in Germinated Rice Alleviated by Selenium

Zheng

Hong

Zhang

et al. 2023

Foods

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“…There have been further studies on the inuence of irrigation methods on As speciation in rice grain. 37 The concentrations of As III , As V , DMA, and MMA in grains from 26 different rice genotypes irrigated either with continuous ooding, periodic saturation or sprinkler irrigation were reported. Speciation was performed using IC-ICP-MS and PCA was also performed on a dataset of 78 rice samples (26 for each irrigation method) and 5 variables i.e., the total amount of As and the percent amounts of As III , of As V , of DMA, and of other As species, respectively.…”

Section: Arsenicmentioning

confidence: 99%

Atomic spectrometry update: review of advances in elemental speciation

Clough

Harrington

Hill

et al. 2023

J. Anal. At. Spectrom.

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“…Rice is a primary dietary staple for more than half of the world population. 12,13 It is an excellent scavenger for As compared to other staple crops. 14,15 Consumers are exposed to As either by consumption of grain or rice-based food products.…”

Section: Introductionmentioning

confidence: 99%