Trace determination of total mercury in rice by conventional inductively coupled plasma mass spectrometry

Drennan-Harris, Lindsay R.; Wongwilawan, Sirinapa; Tyson, Julian F.

doi:10.1039/c2ja30278k

Cited by 27 publications

(12 citation statements)

References 32 publications

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“…We chose to analyze rough rice (unmilled rice with the husk intact) to better represent all material (and associated MeHg and THg) that was removed from the field at harvest. Rough rice and straw were lyophilized, ground to a fine powder using a coffee grinder cleaned with ethanol between samples (Drennan‐Harris et al, 2013), and then analyzed for MeHg using the same approach as for soil (Marvin‐DiPasquale et al, 2011). For THg analysis, plant samples were digested with concentrated HNO 3 in an autoclave at 138 kPa and 126°C for 3 h (Kleckner et al, 2017), before addition of BrCl and quantification (Marvin‐DiPasquale et al, 2011).…”

Section: Methodsmentioning

confidence: 99%

Methylmercury Dynamics in Upper Sacramento Valley Rice Fields with Low Background Soil Mercury Levels

et al. 2018

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Few studies have considered how methylmercury (MeHg, a toxic form of Hg produced in anaerobic soils) production in rice ( L.) fields can affect water quality, and little is known about MeHg dynamics in rice fields. Surface water MeHg and total Hg (THg) imports, exports, and storage were studied in two commercial rice fields in the Sacramento Valley, California, where soil THg was low (25 and 57 ng g). The median concentration of MeHg in drainage water exiting the fields was 0.17 ng g (range: <0.007-2.1 ng g). Compared with irrigation water, drainage water had similar MeHg concentrations, and lower THg concentrations during the growing season. Significantly elevated drainage water MeHg and THg concentrations were observed in the fallow season compared with the growing season. An analysis of surface water loads indicates that fields were net importers of both MeHg (76-110 ng m) and THg (1947-7224 ng m) during the growing season, and net exporters of MeHg (35-200 ng m) and THg (248-6496 ng m) during the fallow season. At harvest, 190 to 700 ng MeHg m and 1400 to 1700 ng THg m were removed from fields in rice grain. Rice straw, which contained 120 to 180 ng MeHg m and 7000-10,500 ng m THg was incorporated into the soil. These results indicate that efforts to reduce MeHg and THg exports in rice drainage water should focus on the fallow season. Substantial amounts of MeHg and THg were stored in plants, and these pools should be considered in future studies.

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Section: Methodsmentioning

confidence: 99%

Methylmercury Dynamics in Upper Sacramento Valley Rice Fields with Low Background Soil Mercury Levels

et al. 2018

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“…Traditional analytical techniques for metal ion detection, such as atomic absorption or emission spectroscopy (AAS/AES) [10], inductively coupled plasma mass spectrometry (ICP-MS) [11], anodic stripping voltammetry [12], and capillary electrophoresis [13], typically require expensive instrumentation and/or complicated sample preparation, making it difficult for on-site and real-time detection. In light of these drawbacks, there is increasing interest in developing new sensing techniques for the detection of metal ions that have higher sensitivity and selectivity, shorter response times, and lower costs [14].…”

Section: Introductionmentioning

confidence: 99%

Fluorescent nanoprobes for sensing and imaging of metal ions: Recent advances and future perspectives

et al. 2016

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Summary Recent advances in nanoscale science and technology have generated nanomaterials with unique optical properties. Over the past decade, numerous fluorescent nanoprobes have been developed for highly sensitive and selective sensing and imaging of metal ions, both in vitro and in vivo. In this review, we provide an overview of the recent development of the design and optical properties of the different classes of fluorescent nanoprobes based on noble metal nanomaterials, upconversion nanoparticles, semiconductor quantum dots, and carbon-based nanomaterials. We further detail their application in the detection and quantification of metal ions for environmental monitoring, food safety, medical diagnostics, as well as their use in biomedical imaging in living cells and animals.

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“…For individuals on primarily rice-based diets then these levels are of concern especially as MeHg, the most toxic Hg species, concentrates in the rice grain(62). Methods for total mercury analysis of rice have been compared and acid digestion ICP-MS or cold vapor atomic absorption spectrometry (CVAAS) have been found to be comparable to solid sampling mercury analysis and satisfactory accuracy for rice reference material NIST 1558a was obtained(63). …”

Section: Determination Of Total Trace Element Concentrations In Foodmentioning

confidence: 99%

Recent Advances in the Measurement of Arsenic, Cadmium, and Mercury in Rice and Other Foods

Jackson

Punshon

2015

Curr Envir Health Rpt

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Trace element analysis of foods is of increasing importance because of raised consumer awareness and the need to evaluate and establish regulatory guidelines for toxic trace metals and metalloids. This paper reviews recent advances in the analysis of trace elements in food, including challenges, state-of-the art methods, and use of spatially resolved techniques for localizing the distribution of As and Hg within rice grains. Total elemental analysis of foods is relatively well-established but the push for ever lower detection limits requires that methods be robust from potential matrix interferences which can be particularly severe for food. Inductively coupled plasma mass spectrometry (ICP-MS) is the method of choice, allowing for multi-element and highly sensitive analyses. For arsenic, speciation analysis is necessary because the inorganic forms are more likely to be subject to regulatory limits. Chromatographic techniques coupled to ICP-MS are most often used for arsenic speciation and a range of methods now exist for a variety of different arsenic species in different food matrices. Speciation and spatial analysis of foods, especially rice, can also be achieved with synchrotron techniques. Sensitive analytical techniques and methodological advances provide robust methods for the assessment of several metals in animal and plant-based foods, in particular for arsenic, cadmium and mercury in rice and arsenic speciation in foodstuffs.

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Trace determination of total mercury in rice by conventional inductively coupled plasma mass spectrometry

Cited by 27 publications

References 32 publications

Methylmercury Dynamics in Upper Sacramento Valley Rice Fields with Low Background Soil Mercury Levels

Methylmercury Dynamics in Upper Sacramento Valley Rice Fields with Low Background Soil Mercury Levels

Fluorescent nanoprobes for sensing and imaging of metal ions: Recent advances and future perspectives

Recent Advances in the Measurement of Arsenic, Cadmium, and Mercury in Rice and Other Foods

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