Instrumental Neutron Activation Analysis

Guinn, V.P.; Wagner, C. D.

doi:10.1021/ac60159a005

Cited by 93 publications

(36 citation statements)

References 13 publications

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“…Determination of manganese, potassium, copper, magnesium attd calcium. Mn, K and Cu were determined by the thermal neutron activation method of Guinn and Wagner (16), and Papavasiliou and Cotzias (23). Samples were counted with RCL 256 channel gamma ray spectrophotometer coupled with a Harshaw 3 x 3 in.…”

Section: Methodsmentioning

confidence: 99%

Isolation and Partial Characterization of Globoids from Aleurone Grains of Arachis hypogaea Seed

Sharma

Dieckert

1975

Physiologia Plantarum

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The aleurone grains of the peanut (Arachis hypogaea) have been fractionated into the globoidal and nongloboidal components by homogenization in 0.5 M sucrose solution and differential centrifugation. The major components of the globoids are: protein, 35.1%; magnesium, 2.5%; potassium, 2.0%; myoinositol, 7.0%; total phosphorus, 7.4%; oxalic acid, 3.5%; and moisture, 8.6%. Small amounts of calcium (0.5%) and manganese (0.03%) are also present. Of the total phosphorus about 97% is present as organic phosphorus of which phytic acid (myoinositol hexaphosphoric acid) constitutes the major portion with only 0.1% orthophosphate and traces of lower phosphates of myoinositol. The globoidal fraction accounts for about 50% of the total magnesium, manganese, phytic acid, oxalic acid, and for 13% of the potassium and 80% of the calcium present in the aleurone grains. The remainder of these components are present in the matrix of the aleurone grain. There seems to be a cation deficit in the globoids and a cation excess in the aleurone grains and soluble fraction. The nature of the missing cation in the globoid and the missing anion in the aleurone grain or in the soluble fraction was not determined, but thought to be protein.

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Section: Methodsmentioning

confidence: 99%

Isolation and Partial Characterization of Globoids from Aleurone Grains of Arachis hypogaea Seed

Sharma

Dieckert

1975

Physiologia Plantarum

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“…Neutron activation analysis (NAA) was developed in the late 1950s (Guinn & Wagner 1960). In the early years of NAA, because of the low resolution of solid state detectors, radiochemical separation of radioactive isotopes was required.…”

Section: Instrumental Neutron Activation Analysis (Inaa)mentioning

confidence: 99%

Instrumental neutron activation analysis (INAA) and forensic applications

Eby

2013

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Instrumental neutron activation analysis (INAA) is a non-destructive analytical technique that can be applied to a wide range of materials. The method requires no pretreatment of the sample, various geometries can be used and as many as 40 elements can be determined at the ppb -ppm level, depending on the characteristics of the specific sample. The method has been used in a number of forensic applications, such as identifying the source of ammunition, gunshot residue, arsenic in hair and the source of cigarettes. In this contribution, INAA is applied to characterizing ceramics, maple syrups and grasses, and based on the data it is possible to distinguish between various types of ceramics, sources of maple syrup and the geographical/ geological locations of grass samples. As an example of an environmental forensic application, it is shown that a tree-ring record can be used to map the history of environmental pollution associated with a zinc smelter. Additional applications involve characterizing the products of nuclear detonations and the provenance of diamonds.

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“…Along with the production of a variety of techniques for the detection. To date, there are various analytical techniques, such as atomic absorption spectrometry [46], inductively coupled plasma mass spectrometry [47], inductively coupled plasma atomic emission spectrometry [48], capillary electrophoresis [49], X-ray fluorescence spectrometry [50], Neutron activation analysis [51], Ion chromatography [52] and UV-VIS spectrometry (UV-VIS) [53], have been performed for heavy metals quantification. However, these spectrometric methods require expensive instruments and not suitable for in situ analysis due to the ponderous and also needing professional operators to handle complicated instruments.…”

Section: Methods Of Detectionmentioning

confidence: 99%

Graphene-Polymer based Nanocomposites for Electrochemical Sensing of Toxic Chemicals

Marlinda

2020

Graphene-Based Electrochemical Sensors for Toxic Chemicals

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This chapter (with 94 refs.) gives an overview of the progress in the past few years on the development of graphene-polymer based for use in sensors and analytical tools for the determination of toxic chemicals. Sensing of toxic molecules is critical to environmental monitoring, control of chemical processes, agricultural, and medical applications. In particular, the detection of heavy metal ions such as mercury, cadmium, arsenic, chromium, thallium and lead which are extremely harmful pollutants in the biosphere due to their toxicity and even trace amounts of them pose a detrimental risk to human health. Graphene and their polymer composites are synthesized by using various synthesis techniques. Following details is an overview of the significant synthesis techniques of graphene-polymer based nanocomposites that have been reported in the past few years. We also discussed the various analytical electrochemical detection methods for toxic chemicals such as potentiometric, voltammetric and electrochemical impedance spectroscopy methods. Subsections cover electrochemical sensors on graphene-polymer based nanocomposites with different kind of polymers used, and finally their detection sensors on toxic chemical containing heavy metal ions.

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Instrumental Neutron Activation Analysis

Cited by 93 publications

References 13 publications

Isolation and Partial Characterization of Globoids from Aleurone Grains of Arachis hypogaea Seed

Isolation and Partial Characterization of Globoids from Aleurone Grains of Arachis hypogaea Seed

Instrumental neutron activation analysis (INAA) and forensic applications

Graphene-Polymer based Nanocomposites for Electrochemical Sensing of Toxic Chemicals

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