2021年5月1日 · Arsenite (AsIII) is predominant species in the topsoil of paddy field and rice grain. Arsenic speciation in rice is characterized by the soil factors. Arsenic (As), being the first class of carcinogen, reflects disastrous threats to living beings owing to its high persistence, toxicity, bioaccumulation, and bioavailability in the environment.

2015年4月9日 · The As accumulation and speciation in rice grain among different rice genotypes grown in different levels of As-contaminated soils is worthy to be studied. Therefore, the aim of this study is to investigate the effect of As phytotoxicity and rice genotypes on the content and speciation of As in rice grains.

2009年6月22日 · Arsenic (As) contamination of rice grains and the generally low concentration of micronutrients in rice have been recognized as a major concern for human health. Here, we investigated the speciation and localization of As and the distribution of (micro)nutrients in rice grains because these are key factors controlling bioavailability of ...

speciation of arsenic in baby rice cereals. The arsenic species are separated using isocratic anion-exchange HPLC, and the ICP-MS is used as an arsenic-specific detector monitoring m/z 75 for arsenic-containing chromatographic peaks. It is operated in helium collision cell mode to eliminate interfer-ence from possible co-eluting chloride species.

2018年9月1日 · Arsenic speciation and distribution in flooded and non-flooded conditions during rice growth is a completely different process. Soil pore water contains higher concentrations of total As, Fe, and Mn than the irrigation water under flooded conditions.

2010年10月11日 · Here we elucidate the colocalization of As species and Fe on rice roots with variable Fe coatings; we used a combination of techniques—X-ray fluorescence imaging, μXANES, transmission X-ray microscopy, and tomography—for this purpose.

2024年1月2日 · A group of researchers from the University of Bayreuth investigated the uptake, accumulation and speciation of arsenic by rice plants. Their results indicate that thioarsenate species are formed within the plant.

4 天之前 · Arsenic contamination is a major concern for seafood [13, 14], rice , and vegetables , However, speciation analysis has recently been applied to various products, including edible insects and milk . In these food samples, five arsenic species are typically measured separately by liquid chromatography coupled with inductively coupled plasma mass ...

Rice bran arsenic speciation was quantified across a globally diverse sample set. • Agronomic methods such as irrigation influenced arsenic concentrations in rice bran. • Postharvest rice bran fermentation minimally impacted arsenic concentrations. • Human health risk assessments suggest some rice bran varieties merit dosage regulation.

2023年7月15日 · 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.