Preconcentration techniques for trace analysis via neutron activation

Rottschafer, J. Mark

doi:10.1016/0039-9140(72)80186-3

Cited by 26 publications

(3 citation statements)

References 46 publications

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“…One of the most delicate analytical methods, NAA is frequently utilized as a reference technique for new procedures. However, it has not been widely used to detect arsenic in water, presumably because seawater has a high salt concentration that results in spectrum interferences [100]. Utilizing Pb(NO) 3 and TiCl 3 as the carrier and reducing agent may help solve this issue.…”

Section: Testing Kit Country Commentsmentioning

confidence: 99%

A Review on Detection Techniques, Health Hazards and Human Health Risk Assessment of Arsenic Pollution in Soil and Groundwater

et al. 2022

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One of the most significant elements in the environment is arsenic (As). It is a hazardous metalloid that causes contamination of soil and water supplies as a result of numerous anthropogenic and natural sources. This pollution has detrimental impacts on human health and the ecosystem, making it crucial to monitor and control. The release of As from minerals into the soil and groundwater depends on the kind of mineral, pH, and redox conditions. As is typically found in two forms, trivalent arsenic (As3+, arsenite) and pentavalent arsenic (As5+, arsenate), both of which are inorganic and extremely deadly. When it comes to toxicity, arsenite is more dangerous than arsenate. Many people have been affected by As poisoning, due to exposure to As through water and food. Nowadays, accurate, fast measurement of As in the field remains a technical challenge; however, the X-ray fluorescence method is considered the most reliable, cost effective and capable of measuring a wide spectrum of metals. Health risk assessment is a crucial parameter to estimate the health hazards of the As molecule. The risk assessment approach proposed by the USEPA is common and widely used, amongst others. On the numerous health risk assessment models/frameworks used to foresee the carcinogenic and non-carcinogenic health impacts brought on by As-contaminated water, little information is currently accessible. This discussion also emphasizes the need for more study on the risks to human health posed by specific As species (both organic and inorganic) found in As-contaminated water.

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Section: Testing Kit Country Commentsmentioning

confidence: 99%

A Review on Detection Techniques, Health Hazards and Human Health Risk Assessment of Arsenic Pollution in Soil and Groundwater

et al. 2022

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“…X-ray fluorescence (13) 5. Neutron-activation analysis (NAA) (14) 6. Capillary electrophoresis (15) 7.…”

Section: As Analysis Techniquesmentioning

confidence: 99%

Arsenic Analysis and Speciation by Field Deployable Nano-Band Electrode System

et al. 2007

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Arsenic has long been an USEPA priority pollutant and is an important environmental concern because of its toxicity and carcinogenicity even at parts per billion levels. The combination of high toxicity and widespread occurrence has created a pressing need for effective monitoring and measurement of arsenic in soils and groundwater. Speciation of the oxidation states of arsenic is very important for better understanding of its chemical behavior, abundance and distribution in groundwater, and its removal mechanism. In the present work, a relatively new nano-band electrode system has been optimized for the determination of both As(III) and As(V) in water samples using Anodic Stripping Voltammetric technique. The influence of deposition potential, different supporting electrolytes and plate time on the arsenic stripping peak was investigated. A detection limit of 0.4 ppb has been obtained using USEPA method of detection limit, with plate times of just 10 seconds. The major interference was found to be from copper during measurements. Finally, the optimized system has been used for arsenic determination and speciation in real water samples, such as Rio Grande basin water, and electrocoagulation solutions.

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“…As one of the most sensitive analytical techniques, NAA is often used as a reference method. However, spectral interferences are encountered, possibly owing to a high salt level in sea water [24]. This problem might be overcome by using Pb(NO) 3 and TiCl 3 as the carrier and reducing agent.…”

Section: Analytical Procedures For Measurement Of Arsenicmentioning

confidence: 99%

Analytical Tools for Monitoring Arsenic in the Environment

Luong¹,

Majid²,

Male³

2007

TOACJ

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Inorganic arsenic possesses the highest toxicity threat amongst all its forms found in natural groundwater and its mobility in aquatic systems and in the soil is of great environmental concern. Besides their toxicity to humans, arsenate and arsenite are highly toxic to plants. Arsenic can only be transformed into a less-toxic material and becomes a permanent part of the environment. Thus, there is a continuing need for its monitoring at arsenic-containing sites where it occurs naturally at elevated levels. This report reviews technologies with the potential to measure and monitor arsenic in the environment. However, we focus on the modern electrochemical methods of arsenic detection in drinking water. The pros and cons of such techniques are discussed with respect to their sensitivity, ability to detect the chemical states of arsenic, reliability, potential interferences, and ease of operation. In particular, emphasis has been devoted to more recent topics including modern stripping voltammetry, electrode modification, nanomaterials, and biosensors. The necessity for field instrumentation, detection and monitoring has also been addressed.

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Preconcentration techniques for trace analysis via neutron activation

Abstract: Sunmuuy-A review is given of the methods that have been proposed for enrichment of trace elements in samples that are to be analysed by neutron-activation methods. The emphasis is on classification of methods, with full illustrations by means of practical examples.

Cited by 26 publications

References 46 publications

A Review on Detection Techniques, Health Hazards and Human Health Risk Assessment of Arsenic Pollution in Soil and Groundwater

A Review on Detection Techniques, Health Hazards and Human Health Risk Assessment of Arsenic Pollution in Soil and Groundwater

Arsenic Analysis and Speciation by Field Deployable Nano-Band Electrode System

Analytical Tools for Monitoring Arsenic in the Environment

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