Characterization of Geological Certified Reference Materials by Inductively Coupled Plasma-Mass Spectrometry

Pradhan, Sonali; Zhang, Jing; Qu, Jianhua; Xue, Yifeng

doi:10.1080/00032719.2015.1010123

Cited by 7 publications

(3 citation statements)

References 45 publications

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“…Fifty milligrams of dried silicate fraction residue was digested in a microwave oven (CEM MARS 5) using HCl‐HNO 3 ‐HF acids following the postdigestion steps including evaporation and concentration as detailed in Pradhan et al . []. Major and trace element concentrations were determined using Thermo Finnigan ELEMENT 2 HR‐ICP‐MS at State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, P.R.…”

Section: Methodsmentioning

confidence: 77%

“…The analytical results for accuracy and reproducibility were checked by repeat measurements of the rock standards BCR 2, GSD 6, and GSD 10 as detailed in Pradhan et al . []. The difference between certified and measured elemental concentrations for rock standards was ≤10%, with a reproducibility, calculated using repeat measurement of a standard, was ≤9% ( n = 10).…”

Section: Methodsmentioning

confidence: 99%

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Investigations of the spatial and temporal variations of Sr and Nd isotopes in sediments from two Indian Rivers: Implications to source identification

Pradhan

Zhang

Baskaran

et al. 2017

Geochem Geophys Geosyst

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Radiogenic isotopes of Sr and Nd provide crucial information on chemical and physical erosion processes, therefore used as tracers for fingerprinting the sources of fluvial sediments. Moreover, elemental geochemistry, 87Sr/86Sr and 143Nd/144Nd signatures in silicate fractions of sediments primarily reflect intricate controls of characteristics and provenance of sediment. A suite of sediment samples collected from two rivers of India, Narmada (large) and Netravati (small) were analyzed for elemental concentrations, 87Sr/86Sr and 143Nd/144Nd in silicate as well as acid‐leachable fractions. 87Sr/86Sr in acid‐leachable sediment fractions from both the rivers (0.7094 ± 0.0002 for Narmada and 0.7158 ± 0.003 for Netravati) showed more radiogenic 87Sr/86Sr in Netravati compared to Narmada indicating influence of source rocks in their watersheds. Weak correlation of sedimentary 87Sr/86Sr and 143Nd/144Nd with Al and Chemical Index of Alteration (CIA) in silicate fraction indicates that isotopic compositions are primarily controlled by their sources and not by chemical weathering in both the rivers. Provenance of sediments in Narmada is dominated by their supply from Deccan deposits with secondary supply from mid‐late Proterozoic Vindhyan along with Mesoproterozoic to Mesoarchean TDMNd ages. Sediments from Netravati reflected signatures of peninsular gneisses dominant with gneisses schists and granodiorite along with Paleoarchean TDMNd ages. Based on variability of 87Sr/86Sr and 143Nd/144Nd, present study highlight that sediment supplies from tributaries to the mainstream in Narmada is inadequate as compared to that in Netravati. 87Sr/86Sr and 143Nd/144Nd signatures in Narmada and Netravati are comparable with Global Rivers.

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Section: Methodsmentioning

confidence: 77%

Section: Methodsmentioning

confidence: 99%

Investigations of the spatial and temporal variations of Sr and Nd isotopes in sediments from two Indian Rivers: Implications to source identification

Pradhan

Zhang

Baskaran

et al. 2017

Geochem Geophys Geosyst

Self Cite

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“…Separation of the coronas from M/NPs can be achieved by a rational design of sample pretreatment methods according to the chemical properties of the target compounds. For instance, the absorbed small organic substance could be decoupled from M/NPs by solvent extraction, such as H 2 O 2 , Fenton’s reagent, and alkaline digestion with NaOH and KOH [ 234 ], while inorganic salts and metal cations could be directly eluted in aqueous solvent after digestion of the particles by 68% HNO 3 (Aristar grade) or HCl–HNO 3 –HF–HClO 4 acids [ 235 , 236 ]. Many of the approaches for elution of small molecules from biofluids or tissues could be applied in the extraction of corona constituents.…”

Section: Analytical Methods For Coronas On M/npsmentioning

confidence: 99%

Coronas of micro/nano plastics: a key determinant in their risk assessments

et al. 2022

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As an emerging pollutant in the life cycle of plastic products, micro/nanoplastics (M/NPs) are increasingly being released into the natural environment. Substantial concerns have been raised regarding the environmental and health impacts of M/NPs. Although diverse M/NPs have been detected in natural environment, most of them display two similar features, i.e.,high surface area and strong binding affinity, which enable extensive interactions between M/NPs and surrounding substances. This results in the formation of coronas, including eco-coronas and bio-coronas, on the plastic surface in different media. In real exposure scenarios, corona formation on M/NPs is inevitable and often displays variable and complex structures. The surface coronas have been found to impact the transportation, uptake, distribution, biotransformation and toxicity of particulates. Different from conventional toxins, packages on M/NPs rather than bare particles are more dangerous. We, therefore, recommend seriously consideration of the role of surface coronas in safety assessments. This review summarizes recent progress on the eco–coronas and bio-coronas of M/NPs, and further discusses the analytical methods to interpret corona structures, highlights the impacts of the corona on toxicity and provides future perspectives.

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A Single Digestion Procedure for Determination of Major, Trace, and Rare Earth Elements in Sediments

Carvalho

Reis

Soares

et al. 2020

Water Air Soil Pollut

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Characterization of Geological Certified Reference Materials by Inductively Coupled Plasma-Mass Spectrometry

Cited by 7 publications

References 45 publications

Investigations of the spatial and temporal variations of Sr and Nd isotopes in sediments from two Indian Rivers: Implications to source identification

Investigations of the spatial and temporal variations of Sr and Nd isotopes in sediments from two Indian Rivers: Implications to source identification

Coronas of micro/nano plastics: a key determinant in their risk assessments

A Single Digestion Procedure for Determination of Major, Trace, and Rare Earth Elements in Sediments

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