On-line speciation and quantification of four arsenical species in rice samples collected in Argentina using a HPLC–HG–AFS coupling

Farías, Silvia; Londonio, Agustín; Quintero, César; Befani, Romina; Soro, Mariano; Smichowski, Patricia

doi:10.1016/j.microc.2014.12.010

Cited by 33 publications

(14 citation statements)

References 22 publications

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“…In particular, this needs integration of S. American, African and the S.E. Asian archipelago that are either under reported in the literature, or only feature in interregional comparisons to a limited extent (Adeyemi et al 2017;Adomako et al 2011;Farias et al 2015;Joy et al 2017;Otero et al 2016;Segura et al 2016). This knowledge is required to source low arsenic rice for sub-populations where the consumption of inorganic arsenic from rice is of particular concern, such as for infants and young children (Carey et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Global Sourcing of Low-Inorganic Arsenic Rice Grain

et al. 2019

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Arsenic in rice grain is dominated by two species: the carcinogen inorganic arsenic (the sum of arsenate and arsenite) and dimethylarsinic acid (DMA). Rice is the dominant source of inorganic arsenic into the human diet. As such, there is a need to identify sources of low-inorganic arsenic rice globally. Here we surveyed polished (white) rice across representative regions of rice production globally for arsenic speciation. In total 1180 samples were analysed from 29 distinct sampling zones, across 6 continents. For inorganic arsenic the global x was 66 μg/kg, and for DMA this figure was 21 μg/kg. DMA was more variable, ranging from < 2 to 690 μg/kg, while inorganic arsenic ranged from < 2 to 399 μg/kg. It was found that inorganic arsenic dominated when grain sum of species was < 100 μg/kg, with DMA dominating at higher concentrations. There was considerable regional variance in grain arsenic speciation, particularly in DMA where temperate production regions had higher concentrations. Inorganic arsenic concentrations were relatively consistent across temperate, subtropical and northern hemisphere tropical regions. It was only in southern hemisphere tropical regions, in the eastern hemisphere that low-grain inorganic arsenic is found, namely East Africa (x < 10 μg/kg) and the Southern Indonesian islands (x < 20 μg/kg). Southern hemisphere South American rice was universally high in inorganic arsenic, the reason for which needs further exploration.

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Section: Introductionmentioning

confidence: 99%

Global Sourcing of Low-Inorganic Arsenic Rice Grain

et al. 2019

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“…Instrumental techniques for the separation of arsenic species have been primarily in the form of HPLCor Gas Chromatography Hydride Generation Atomic Absorption Spectroscopy (GC-MS-HGAAS), HPLC or GC -ICP-MS, HPLC or GC -ICP-OES [112] or High Performance Liquid Chromatography Hydride Generation Atomic Fluorescence Spectroscopy (HPLC-HG-AFS) [113]. HPLC is the most common of these techniques in the separation of As species, where Ion Chromatography (IC) is mostly used for plant extracts [50].…”

Section: Arsenicmentioning

confidence: 99%

“…Although to a much lesser extent, Capillary Electrophoresis (CE) [84] and on-line speciation using HPLC-HG-AFS [113] have also been explored as alternative methods for As speciation.…”

Section: Arsenicmentioning

confidence: 99%

“…Due to the biological and biochemical transformations of Cd in plant roots, the bioavailability and toxicity trends in roots are different to those in soil [116]. A study by Ueno et al [115] identified Cd species using 113 Cd Nuclear Magnetic Resonance (NMR). In this study, the inorganic form of free Cd ions was found to be dominant, where 85.7 % was present as the free metal, 7.7 % was complexed with sulfate, 3.2 % was present as a Cd-citrate complex and 0.1 % was present as a CdHistidine (Cd-His) complex.…”

Section: Cadmiummentioning

confidence: 99%

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Metal and metalloid speciation in plants: Overview, instrumentation, approaches and commonly assessed elements

Kroukamp

Wondimu

Forbes

2016

TrAC Trends in Analytical Chemistry

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The ability of plants to hyper-accumulate metals and metalloids from the surrounding environment may pose a significant health risk to both humans and animals since plants form a substantial component of diet. This attribute, however, has also been identified as a useful tool in bioremediation and biomonitoring studies; where assimilated metal(loid)s in plants often correlate to environmental exposure. Since the bioavailability and toxicity of these elements depends upon their chemical form, speciation studies are essential in determining mobility and metabolic pathways. This can be done in a number of ways where sampling, pre-treatment and storage are all important factors affecting speciation. Appropriate analytical techniques for speciation studies can either be direct methods such as XAS, or indirect methods which require species separation prior to analysis. Separation techniques can be in the form of sequential extractions or column separation and analyte detection often utilises instrumentation such as ESI-MS, ICP-MS and ICP-OES.

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“…Several emerging studies propose that developing hybrid techniques, such as coupling HPLC and HG-AFS, may result in simple, reliable methods for routine laboratory procedures. 97 One study aims to find a viable method of direct water determination by combining dispersive liquid−liquid microextraction with solidphase extraction to prepare samples for the graphite furnace. 38 Another method sometimes used for its uniquely nondestructive testing is magnetic resonance imaging (MRI) alongside high-resolution magic angle spinning nuclear magnetic resonance (HR-MAS NMR) to observe changes in metabolites of polluted samples.…”

Section: Journal Of Agricultural and Food Chemistrymentioning

confidence: 99%

Arsenic: A Review of the Element’s Toxicity, Plant Interactions, and Potential Methods of Remediation

Hettick

Cañas‐Carrell

French

et al. 2015

J. Agric. Food Chem.

135

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Arsenic is a naturally occurring element with a long history of toxicity. Sites of contamination are found worldwide as a result of both natural processes and anthropogenic activities. The broad scope of arsenic toxicity to humans and its unique interaction with the environment have led to extensive research into its physicochemical properties and toxic behavior in biological systems. The purpose of this review is to compile the results of recent studies concerning the metalloid and consider the chemical and physical properties of arsenic in the broad context of human toxicity and phytoremediation. Areas of focus include arsenic's mechanisms of human toxicity, interaction with plant systems, potential methods of remediation, and protocols for the determination of metals in experimentation. This assessment of the literature indicates that controlling contamination of water sources and plants through effective remediation and management is essential to successfully addressing the problems of arsenic toxicity and contamination.

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On-line speciation and quantification of four arsenical species in rice samples collected in Argentina using a HPLC–HG–AFS coupling

Cited by 33 publications

References 22 publications

Global Sourcing of Low-Inorganic Arsenic Rice Grain

Global Sourcing of Low-Inorganic Arsenic Rice Grain

Metal and metalloid speciation in plants: Overview, instrumentation, approaches and commonly assessed elements

Arsenic: A Review of the Element’s Toxicity, Plant Interactions, and Potential Methods of Remediation

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