Dual-cloud point extraction for speciation of mercury in water and fish samples by electrothermal atomic absorption spectrometry

Thongsaw, Arnon; Sananmuang, Ratana; Udnan, Yuthapong; Ross, Gareth; Chaiyasith, Wipharat Chuachuad

doi:10.1016/j.sab.2019.105685

Cited by 45 publications

(10 citation statements)

References 44 publications

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“…Čo sa týka optimalizácie teplotných programov, v publikovanej literatúre nie je zriedkavosťou sušenie vo viacerých krokoch. V prípade spojenia CPE a ETAAS boli opísané teplotné programy, kde sa sušenie vzorky uskutočnilo v dvoch krokoch 22,26,27,[34][35][36] , no možno nájsť aj prípady, kedy bolo sušenie uskutočnené až v troch krokoch 23,37,38 . Možno to pripísať snahe o reprodukovateľné sušenie vzorky, kde je hlavným cieľom zabránenie prudkému varu použitého činidla, s čím môže byť následne spojené nežiadúce rozptýlenie vzorky po povrchu grafitovej kyvety.…”

Section: Teplotný Programunclassified

Cloud Point Extraction Combined with Electrothermal Atomic Absorption Spectrometry

Hagarová

2022

Chem. Listy

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Nowadays, a considerable number of various separation/preconcentration procedures coupled with electrothermal atomic absorption spectrometry (ETAAS) can be found in the published literature. Among separation techniques, cloud point extraction (CPE) has found its regular use in ultratrace analysis of elements. This review offers a more detailed look to the coupling of CPE and ETAAS, especially to the parameters affecting ETAAS quantification of a selected element. Publications, where this combination of separation technique and quantification method is used, describe an achievement of quantitative extraction recoveries, an acceptable precision and low limits of quantification (LOQs) for different (ultra)trace elements in various complex matrices. These results lead to the conclusion that the developed procedures have a great analytical potential for reliable quantification of (ultra)trace elements, even when complicated matrices containing various components are to be analyzed, which is supported by papers mentioned in this review.

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Section: Teplotný Programunclassified

Cloud Point Extraction Combined with Electrothermal Atomic Absorption Spectrometry

Hagarová

2022

Chem. Listy

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“…Electrothermal vaporization (ETV), always being made from graphite, quartz, tungsten, rhenium, and other high-melting point metals, − is a high-efficiency sampling manner coupled with AAS (ETV-AAS), AFS (ETV-AFS), ICP-OES (ETV-ICP-OES), and ICP-MS (ETV-ICP-MS) to detect metal or nonmetal elements in various samples. ,− According to the material and structure of the electrothermal vaporizer, ETV hyphenation atomic spectrometry allows direct introduction at the submilligram to gram level sample sizes, so it can also be classified as microanalysis. Hence, ETV has been extensively used to fabricate a fast and miniature analyzer for heavy metals in agri-food, soil, plant and animal, biological samples, and so on. ,,− The direct sampling Hg analyzer consisting of an ETV catalytic pyrolysis atomic spectrometer with or without amalgamation has become one of the most successful commercial instruments for solid sampling elemental analysis . Rapid detection of toxic heavy metals such as Cd, Pb, As, Cr, Cu, Zn, etc.…”

Section: Spatial Distribution and Microanalysis Techniques In Agromet...mentioning

confidence: 99%

Analytical Methodologies for Agrometallomics: A Critical Review

Liu

Chang

et al. 2021

J. Agric. Food Chem.

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Agrometallomics, as an independent interdiscipline, is first defined and described in this review. Metallic elements widely exist in agricultural plants, animals and edible fungi, seed, fertilizer, pesticide, feedstuff, as well as the agricultural environment and ecology, and even functional and pathogenic microorganisms. So, the agrometallome plays a vital role in molecular and organismic mechanisms like environmetallomics, metabolomics, proteomics, lipidomics, glycomics, immunomics, genomics, etc. To further reveal the inner and mutual mechanism of the agrometallome, comprehensive and systematic methodologies for the analysis of beneficial and toxic metals are indispensable to investigate elemental existence, concentration, distribution, speciation, and forms in agricultural lives and media. Based on agrometallomics, this review summarizes and discusses the advanced technical progress and future perspectives of metallic analytical approaches, which are categorized into ultrasensitive and high-throughput analysis, elemental speciation and state analysis, and spatial- and microanalysis. Furthermore, the progress of agrometallomic innovativeness greatly depends on the innovative development of modern metallic analysis approaches including, but not limited to, high sensitivity, elemental coverage, and anti-interference; high-resolution isotopic analysis; solid sampling and nondestructive analysis; metal chemical species and metal forms, associated molecular clusters, and macromolecular complexes analysis; and metal-related particles or metal within the microsize and even single cell or subcellular analysis.

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“…Triton X-114 is usually applied for the extraction of the sensitive analytes. , Based on the conventional CPE, dual-CPE (dCPE) has been proposed . While samples are pretreated with dCPE, the target analytes are purified and the influences of interfering components are ulteriorly reduced. , Nong et al coupled dCPE with high-performance liquid chromatography (HPLC) to simultaneously extract, separate, and determine trace sulfonamide in urine and water samples . Therefore, it is interesting and significant to explore the applications of CPE.…”

Section: Introductionmentioning

confidence: 99%

Facile Cloud Point Extraction for the Separation and Determination of Phenolic Acids from Dandelion

et al. 2021

ACS Omega

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It is significantly crucial to develop a robust pretreatment for the quantitative analysis of herbs. However, the traditional strategies are time-consuming, tedious, and not eco-friendly. In this work, cloud point extraction (CPE) is engineered for the simultaneous separation and enrichment of ferulic acid (FA), chlorogenic acid (CLA), and caffeic acid (CA) from dandelion prior to its determination by high-performance liquid chromatography (HPLC). A famous nonionic surfactant of Triton X-114 was selected as an extractant of CPE, and parameters affecting the extraction, such as surfactant concentration, salt content, pH value, temperature, and incubation time, were investigated carefully. Furthermore, the well-designed CPE with ultrasonic assistance combined with HPLC was developed for the detection of the target analytes in dandelion. The established method having a good linearity in the range of 0.15–26.2 mg L–1 with R 2 more than 0.9979 and the spiked recoveries ranging from 81 to 96% was applied to test real samples of dandelion. The contents of CA in samples were consistent with those assayed by the method (Chinese Pharmacopoeia 2015). The proposed method afforded good analytical performances, shorter pretreatment time (65 min), and less organic solvent consumption (less than 1.0 mL). It was proved that the developed method presented a facile, inexpensive, efficient, and environment-friendly pretreatment and can be used for the quantitative analysis of CLA, CA, and FA in dandelion. As expected, the proposed method would be a promising potential for the quality analysis of herbal medicines.

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Dual-cloud point extraction for speciation of mercury in water and fish samples by electrothermal atomic absorption spectrometry

Cited by 45 publications

References 44 publications

Cloud Point Extraction Combined with Electrothermal Atomic Absorption Spectrometry

Cloud Point Extraction Combined with Electrothermal Atomic Absorption Spectrometry

Analytical Methodologies for Agrometallomics: A Critical Review

Facile Cloud Point Extraction for the Separation and Determination of Phenolic Acids from Dandelion

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