Special Techniques

Taylor, Howard E.

doi:10.1016/b978-012683865-7/50006-5

Cited by 17 publications

(2 citation statements)

References 3 publications

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“…In speciation analytics, chromatographic methods are largely used for separation [10] whereas spectroscopic ones are employed for detection [11, 12], albeit the application of other methods is also possible [13]. The application of hyphenated techniques entails perfect understanding of analytical methodologies and detailed knowledge of the apparatus.…”

Section: Speciation Analytics and Hyphenated Techniquesmentioning

confidence: 99%

Application of Hyphenated Techniques in Speciation Analysis of Arsenic, Antimony, and Thallium

Michalski

Szopa

Jabłońska

et al. 2012

The Scientific World Journal

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Due to the fact that metals and metalloids have a strong impact on the environment, the methods of their determination and speciation have received special attention in recent years. Arsenic, antimony, and thallium are important examples of such toxic elements. Their speciation is especially important in the environmental and biomedical fields because of their toxicity, bioavailability, and reactivity. Recently, speciation analytics has been playing a unique role in the studies of biogeochemical cycles of chemical compounds, determination of toxicity and ecotoxicity of selected elements, quality control of food products, control of medicines and pharmaceutical products, technological process control, research on the impact of technological installation on the environment, examination of occupational exposure, and clinical analysis. Conventional methods are usually labor intensive, time consuming, and susceptible to interferences. The hyphenated techniques, in which separation method is coupled with multidimensional detectors, have become useful alternatives. The main advantages of those techniques consist in extremely low detection and quantification limits, insignificant interference, influence as well as high precision and repeatability of the determinations. In view of their importance, the present work overviews and discusses different hyphenated techniques used for arsenic, antimony, and thallium species analysis, in different clinical, environmental and food matrices.

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Section: Speciation Analytics and Hyphenated Techniquesmentioning

confidence: 99%

Application of Hyphenated Techniques in Speciation Analysis of Arsenic, Antimony, and Thallium

Michalski

Szopa

Jabłońska

et al. 2012

The Scientific World Journal

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“…Qualitative and quantitative analysis of trace and ultratrace elements can be performed using instrumental neutron activation analysis (INAA) [ 22 ]. Multi-element profiling using inductively coupled plasma optical emission spectroscopy (ICP-OES) and inductively coupled plasma mass spectrometry (ICP-MS) are the most widely used techniques, as they allow the simultaneous determination of many elements in a single sample weighing less than 1 g [ 27 , 28 , 29 ]. In addition to quantitative multi-element analysis, ICP-MS allows the precise identification and measurement of specific isotopes of the element being analyzed.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Concentration of 51 Elements in the Liver and in Various Parts of the Human Brain—Profiling of the Mineral Status

et al. 2023

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The anthropogenic environment and diet introduce many metals into the human body, both essential and toxic. Absorption leads to systemic exposure and accumulation in body fluids and tissues. Both excess and deficiency of trace elements are health hazards. The primary aim of the present study was to evaluate the concentration of 51 elements in liver samples and 11 selected brain regions obtained at post-mortem examination from a population of adults living in south-eastern Poland (n = 15). A total of 180 analyses were performed by inductively coupled plasma mass spectrometry in two independent replicates. The collected data show very high individual variability in the content of the investigated elements. Macroelements such as sodium, magnesium, phosphorus, potassium, calcium, iron, and zinc occurred in the highest concentrations and with the greatest statistically significant variations. Although the elemental content of the brain and liver differed significantly, the strongest positive correlation between liver and polus frontalis was observed for the essential element selenium (0.9338) and the strongest negative one for manganese (−0.4316) and lanthanum (−0.5110). The brain areas studied have different requirements for phosphorus, manganese, iron, and molybdenum. In addition, males had a significantly (p < 0.05) higher brain content of lanthanides and actinides than females. The results of this study show that the inhabitants of south-eastern Poland are exposed to a fairly uniform accumulation of aluminum and vanadium in the brain, which have the highest affinity to the thalamus dorsalis. This result proves that there is environmental exposure to these elements.

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Determination of aluminium using high performance chelation ion chromatography

Tria

Haddad

Nesterenko³

2008

J of Separation Science

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Original PaperDetermination of aluminium using high performance chelation ion chromatographyThe suitability of high performance chelation ion chromatography (HPCIC) using postcolumn reaction for the separation and determination of dissolved aluminium in complex samples was investigated. Use of a chelating ion-exchanger allowed for differentiation between kinetically labile and kinetically stable species of aluminium. Separation through a combination of chelation and cation-exchange was achieved using a 20064.0 mm id column packed with particles of silica functionalised with iminodiacetic acid, with nitric acid -potassium chloride eluents. A temperature anomaly causing a five-fold increase in column efficiency for aluminium is believed to be a result of localised temperature effects in the particular type of instrument used. Postcolumn reagents investigated for the photometric detection included Tiron, Pyrocatechol Violet, Chrome Azurol S, and Eriochromem Cyanine R. The lowest detection limit (2.7 lg/L for a 100 lL sample volume) was achieved using 0.25 mM Eriochrome Cyanine R in 0.2 M hexamine (pH 6.1) with 1 mM cetyltrimethylpyridium bromide (CTAB). The optimised HPCIC system was applied successfully to the quantification of labile aluminium in paper mill process water.

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Special Techniques

Cited by 17 publications

References 3 publications

Application of Hyphenated Techniques in Speciation Analysis of Arsenic, Antimony, and Thallium

Application of Hyphenated Techniques in Speciation Analysis of Arsenic, Antimony, and Thallium

Assessment of the Concentration of 51 Elements in the Liver and in Various Parts of the Human Brain—Profiling of the Mineral Status

Determination of aluminium using high performance chelation ion chromatography

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