Speciation of inorganic arsenic in rice using hydride generation atomic absorption spectrometry (HG-AAS)

Cerveira, Camila; Pozebon, Dirce; Moraes, Diogo Pompéu de; Fraga, Jéssica Camila Silva de

doi:10.1039/c5ay00563a

Cited by 39 publications

(32 citation statements)

References 27 publications

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“…7 This is a matter of concern in Brazil, which is the eighth largest producer of rice. 24 Seafood is another significant source of arsenic exposure for man. 25,26 The WHO recommended limit for As in drinking water is 10 µg L -1 .…”

Section: Introductionmentioning

confidence: 99%

“…22 In rice, the limit for As according to WHO, Food and Drug Administration (FDA) and Codex Alimentarius is 200 µg L -1 (20 ng g -1 ). 24 In Brazil, the Ministry of Agriculture, Livestock and Food Supply (MAPA) 27 establishes a reference value for total As of 1000 µg kg -1 in kidney (bovine, pork, sheep), liver (poultry, rabbit), fish, and shrimps, as well as 300 µg kg -1 in honey. High-performance liquid chromatography with inductively coupled plasma-mass spectrometer (HPLC-ICP-MS) is the most commonly used method to determine arsenic species, due to its wide dynamic range, high selectivity, high sensitivity (low detection limits), 3 and capability to determine AsB and AsC, which cannot be analyzed by hydride generation techniques, since they do not form volatile hydrides by derivatization.…”

Section: Introductionmentioning

confidence: 99%

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Arsenic Speciation in Fish and Rice by HPLC-ICP-MS Using Salt Gradient Elution

Nogueira

Melo

Figueiredo

et al. 2018

J. Braz. Chem. Soc.

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This paper presents arsenic speciation studies by high-performance liquid chromatography with inductively coupled plasma-mass spectrometer (HPLC-ICP-MS) using a chromatography column containing a strong anion exchange stationary phase (Agilent Bio SAX G3154A/101) for determination of arsenobetaine (AsB), dimethylarsinic acid (DMA), As III , monomethylarsonic acid (MMA), and As V . The best separation was achieved in 15 min, using a 4 min isocratic step with 1 mM (NH 4 ) 2 HPO 4 pH 10.2, followed by a 2 min salt gradient from 1 to 10 mM, which was kept for 4 min. Compared to the Food and Drug Administration (FDA) method for rice using the PRP-X-100 column, the Bio SAX method was quicker, provided at least equal separation of AsB from the next peak, and led to more symmetrical peaks. The linearity between 0.5 and 60 µg L -1 was shown. The method was tested with 10 µg L -1 fortified rice and fish samples extracted in ultrasound using methanol/water 1:1, and recoveries between 40 and 90% were obtained.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Arsenic Speciation in Fish and Rice by HPLC-ICP-MS Using Salt Gradient Elution

Nogueira

Melo

Figueiredo

et al. 2018

J. Braz. Chem. Soc.

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show abstract

“…The same authors 138 also develop and validate another method based on the same extraction-pre-concentration system, optimized to obtain a lower LOD and a higher throughput of sample extraction, to determine iAs in rice and rice products. Cerveira et al 139 apply HG-AAS to measure iAs in several types of rice samples, after selective extraction with HNO 3 . Sun et al 140 develop a method for analysis of As(III) and total iAs in dietary supplements by using a slurry in the presence of 8-hydroxiquinoline.…”

Section: Techniques Involving Hydride Generation (Hg) As a Derivatizamentioning

confidence: 99%

“…155,156 and the other study using HG-AAS. 139 Another study extracts iAs with TFA and determination is by HPLC-HG-AFS. 172 White rice (SRM 1568b white rice) was recently released by NIST and it is certified for arsenic speciation (DMA, MA, and iAs).…”

Section: -247mentioning

confidence: 99%

Inorganic Arsenic Determination in Food: A Review of Analytical Proposals and Quality Assessment Over the Last Six Years

2016

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Here we review recent developments in analytical proposals for the assessment of inorganic arsenic (iAs) content in food products. Interest in the determination of iAs in products for human consumption such as food commodities, wine, and seaweed among others is fueled by the wide recognition of its toxic effects on humans, even at low concentrations. Currently, the need for robust and reliable analytical methods is recognized by various international safety and health agencies, and by organizations in charge of establishing acceptable tolerance levels of iAs in food. This review summarizes the state of the art of analytical methods while highlighting tools for the assessment of quality assessment of the results, such as the production and evaluation of certified reference materials (CRMs) and the availability of specific proficiency testing (PT) programmes. Because the number of studies dedicated to the subject of this review has increased considerably over recent years, the sources consulted and cited here are limited to those from 2010 to the end of 2015.

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“…8,[13][14][15][16][17] Hydride generation coupled with flame atomic absorption spectroscopy (HG-FAAS) is a technique capable of providing good limits of detection (LOD) for arsenic 18 that are below the threshold of 10 µg L -1 established by the Brazilian regulation for water used for irrigation, human consumption and recreation. 19 Ultrasonic assisted extraction (UAE) is often used as a suitable extraction method of arsenic in solids samples.…”

Section: Introductionmentioning

confidence: 99%

Comparison between Ultrasound Assisted Extraction and Microwave Digestion in the Determination of Arsenic in Edible Grains

Ribeiro¹,

Vieira²,

Lobo³

et al. 2017

J. Braz. Chem. Soc.

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A comparative evaluation of arsenic extraction from grains using ultrasound assisted extraction (UAE) and microwave digestion (MW) was developed. The arsenic determination was carried out using hydride generation coupled to flame atomic absorption spectroscopy (HG-FAAS). The optimal extraction condition indicated for corn was 20% v v -1 of HCl, temperature of 67 °C and sonication time of 30 min. For bean, the optical condition was HNO 3 in a 10% v v -1 , temperature of 25 °C and sonication time of 10 min and for soybean it was 30% v v -1 HCl, temperature of 60 °C and time of 10 min. Recovery studies close to 100% in the extraction of spiked samples was achieved. The results obtained were compared with two common extraction methods for arsenic using microwave digestion and the developed methods showed a significant increase in the arsenic recovery from the samples. In the real samples it was found an arsenic concentration of 0.3 µg g -1 . The developed methods proved to be efficient at extracting the arsenic present in the studied grains, being appropriate to evaluate the risk to human consumption.

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Speciation of inorganic arsenic in rice using hydride generation atomic absorption spectrometry (HG-AAS)

Abstract: Inorganic arsenic (iAs) is very toxic. iAs in rice was determined using selective hydride generation conditions and atomic absorption spectrometry.

Cited by 39 publications

References 27 publications

Arsenic Speciation in Fish and Rice by HPLC-ICP-MS Using Salt Gradient Elution

Arsenic Speciation in Fish and Rice by HPLC-ICP-MS Using Salt Gradient Elution

Inorganic Arsenic Determination in Food: A Review of Analytical Proposals and Quality Assessment Over the Last Six Years

Comparison between Ultrasound Assisted Extraction and Microwave Digestion in the Determination of Arsenic in Edible Grains

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