Preliminary study on forgery identification of Hetian Jade with Instrumental Neutron Activation Analysis

Nangeelil, Krishnakumar; Dimpfl, Peter; Mamtimin, Mayir; Huang, Shichun; Sun, Zaijing

doi:10.1016/j.apradiso.2022.110535

Cited by 7 publications

(3 citation statements)

References 16 publications

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“…The concentration of elements in the sample is determined using the standard relative method, which involves irradiation and gamma spectrometry of reference and sample materials [ 26 ]. In this method, both the sample (indexed as S) and the reference material (indexed as R) are irradiated at the same locations, ensuring that both samples are exposed to identical flux parameters.…”

Section: Methodsmentioning

confidence: 99%

Using neutron activation to assess heavy metal pollution in water and sediment along Savannah River

Nangeelil,

Fleming,

Sun

2024

Environ Anal Health Toxicol

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A comprehensive study was conducted to assess heavy elemental pollution in the Savannah River, which flows through diverse landscapes encompassing agricultural, industrial, and commercial zones in South Carolina and Georgia. The investigation focused on the impacts of various anthropogenic activities on the river, potentially harming human health and aquatic ecosystems. Thirty samples, collected from the beginning of the Savannah River at Lake Hartwell to the Savannah River estuary near the Atlantic Ocean, were analyzed using Instrumental Neutron Activation Analysis. In regions of intense industrial activities, water samples exhibited elevated concentrations of elements such as Al (0.04-1.99 mg/L), Mg (0.4-5.5 mg/L), Ba (0.08-2.8 mg/L), Zn (0.017-0.9 mg/L), Cr (0.005-1.5 mg/L), and Fe (2.8-110.13 mg/L). Similarly, sediment samples near industrial areas also exhibited enhanced concentrations of heavy elements like Cr, Zr, Rb, Co, Zn, Mg, Mn, and Al. The outcome of this study has identified a spatial trend along the Savannah River, revealing major elements responsible for pollution that could disrupt the ecological environment and potentially impact human health.

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Section: Methodsmentioning

confidence: 99%

Using neutron activation to assess heavy metal pollution in water and sediment along Savannah River

Nangeelil,

Fleming,

Sun

2024

Environ Anal Health Toxicol

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“…Jade is a representative material with considerable significance in the history of oriental civilization. As such, there is a long history of jade mining and research [1]. With the advancement of technology and the research on the spiritual and health benefits of jade, the large amounts of waste produced in the process of jade mining are gradually becoming a concern [2].…”

Section: Introductionmentioning

confidence: 99%

Antibacterial mechanism of Xiuyan jade mineral waste as a natural inorganic antibacterial agent

Wang,

Yang

2023

Mater. Res. Express

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The Xiuyan jade waste exhibits prominent antibacterial properties after mechanical activation; these properties can be further optimized through low-temperature annealing. To elucidate its antibacterial mechanism, analysis methods involving metal-ion leaching monitoring and zeta potential analysis were used. Although the activated waste cannot be easily dissolved in water, Mg2+ and Ca2+ ions precipitated when the waste particles were dispersed in water. The particle surface showed different degrees of electronegativity, which could be the main reason for the antibacterial properties of the material. This study proved the importance of the surface electrical properties of activated waste particles on their properties by observing their adsorption capacity for methylene blue. At the annealing temperature of 270 °C, the Xiuyan jade waste exhibited the highest electronegativity and optimal antibacterial properties as well as the adsorption rate of methylene blue, verifying the significance of electronegativity of activated mineral waste powders on the antibacterial mechanism.

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“…Наиболее крупные известные месторождения в Северо-Западном Китае. В Синцзян-Уйгурском автономном районе находится отрабатываемый уже 6 тысячелетий нефритоносный пояс Хотан как с коренными месторождениями [21][22][23], среди которых наиболее известен и изучен Аламас [24,25], так и знаменитыми россыпными месторождения Юрункаш -«река белого нефрита» и Каракаш -«река черного нефрита» [26 -28]. К поясу Хотан с востока примыкают нефритоносные районы Алтынтаг [29,30] и Южный Алтынтаг [31][32].…”

Section: Introductionunclassified

Dolomite type nephrite processing wastes and their application

Kislov

Khudyakova

Nikolaev

2023

Min.Sci.Technol. (RUS)

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The demand for ornamental stone material has led to an increase in the amount of rock mass being processed. However, the production of lapidary works and jewelry result in a significant amount of waste. This study aims to investigate the material composition and physical and mechanical properties of the solid wastes generated during the processing of dolomite type nephrite in the Vitim region. The accumulation of such waste leads to increased costs of transportation, storage, security, and negative environmental impact. The majority of dolomite type nephrite deposits are located in the Northwest, Northeast, and South of China, in South Korea, Australia, Italy, and Poland, with a large deposit in the Vitim region of Russia. In this study, the waste from the Kavoktinsky deposit, the most productive in Russian, was used. A visual and petrographic examination of nephrite, skarn and amphibolite which are components of the solid waste, was conducted. The macro- and microchemical composition of nephrite of different colors was studied, and X-ray phase analysis was performed. The decorative properties of the waste were determined. A radiation and hygienic certificate was obtained. The waste has a crushability grade of 1200, abrasion grade of I1, and frost resistance of F400. The study has shown that the waste does not contain grains of incompetent rocks, clay, dust, and clay particles. The solid waste form the Vitim nephrite processing is of high quality and meets the requirements of GOST 8267-93, except for an increased content of flagstone (flattened) and large size fragments. It can be used for the production of ordinary, decorative, and mosaic concrete, decorative plates, interior decoration of premises, bathrooms, and saunas, and the manufacture of souvenir products. However, further research is needed to investigate the application of the waste as a raw material for stone casting and a slow-release fertilizer. The utilization of this waste not only solves the problem of waste disposal but also improves economic performance of mineral extraction.

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Preliminary study on forgery identification of Hetian Jade with Instrumental Neutron Activation Analysis

Cited by 7 publications

References 16 publications

Using neutron activation to assess heavy metal pollution in water and sediment along Savannah River

Using neutron activation to assess heavy metal pollution in water and sediment along Savannah River

Antibacterial mechanism of Xiuyan jade mineral waste as a natural inorganic antibacterial agent

Dolomite type nephrite processing wastes and their application

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