In this study we investigated the enrichment ability of oxidized multiwalled carbon nanotubes (MWCNTs) and established a new method for the determination of trace cadmium in environment with flame atomic absorption spectrometry. The MWCNTs were oxidized by potassium permanganate under appropriate conditions before use as preconcentration packing. Parameters influencing the recoveries of target analytes were optimized. Under optimal conditions, the target analyte exhibited a good linearity (R2=0.9992) over the concentration range 0.5-50 ng/ml. The detection limit and precision of the proposed method were 0.15 ng/ml and 2.06%, respectively. The proposed method was applied to the determination of cadmium in real-world environmental samples and the recoveries were in the range of 91.3%-108.0%. All these experimental results indicated that this new procedure could be applied to the determination of trace cadmium in environmental waters.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/s1001-0742(07)60207-1 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
AF4/ICP-ToF-MS for the investigation of species-specific adsorption of organometallic contaminants on natural colloidal particles.
J Hazard Mater
January 2025
Federal Institute for Materials Research and Testing (BAM), Division 1.1 - Inorganic Trace Analysis, Richard-Willstätter-Straße 11, Berlin 12489, Germany. Electronic address:
Organotin (OT) compounds, while crucial in many industrial applications, pose substantial risks to the environment and human health. The toxicity and environmental behaviour of OTs depend on their chemical form, i.e.
View Article and Find Full Text PDFIncidental nanoparticle characterisation in industrial settings to support risk assessment modelling.
Int J Hyg Environ Health
January 2025
Institute of Environmental Assessment and Water Research - Spanish Research council (IDAEA-CSIC), Barcelona, 08034, Spain; Spanish Ministry of Ecological Transition, Pollution Prevention Unit, Pza. San Juan de la Cruz 10, 28071, Madrid, Spain.
Research on nanoparticle (NP) release and potential exposure can be assessed through experimental field campaigns, laboratory simulations, and prediction models. However, risk assessment models are typically designed for manufactured NP (MNP) and have not been adapted for incidental NP (INP) properties. A notable research gap is identifying NP sources and their chemical, physical, and toxicological properties, especially in real-world settings.
View Article and Find Full Text PDFA comparison of energy dispersive spectroscopy in transmission scanning electron microscopy with scanning transmission electron microscopy.
Ultramicroscopy
January 2025
Mechanical Engineering, University of Michigan, USA.
The objective of this work was to explore the capabilities of a field emission gun scanning electron microscope (FEG-SEM) equipped with a transmission scanning electron detector (TSEM) and energy dispersive spectroscopy (EDS) to identify nanoscale chemical heterogeneities in a gas atomization reaction synthesis (GARS) steel sample. The results of this analysis were compared to the same study conducted with scanning transmission electron microscopy (STEM) with EDS mapping. TSEM-EDS was performed using the standard spectral analysis approach, i.
View Article and Find Full Text PDFTarget-induced proximity ligation triggers polymerase chain reaction for subset tracing of small extracellular vesicles.
Talanta
January 2025
Department of Neurosurgery, Ningbo Medical Center Lihuili Hospital, Ningbo University, Ningbo City, Zhejiang Province, 315040, China; Department of Neurology, Ningbo Medical Center Li Huili Hospital, The Affiliated Li Huili Hospital, Ningbo University, Ningbo City, Zhejiang Province, 315040, China; Neuroscience Medical Center, Ningbo Medical Center Lihuili Hospital, Ningbo University, Ningbo City, Zhejiang Province, 315040, China. Electronic address:
The considerable abundance and remarkable stability of sEVs provide substantial benefits for diagnosing Alzheimer's disease. Therefore, precise tracking subtypes of small extracellular vesicles (sEVs) is crucial for screening novel diagnostic biomarkers and developing therapeutic technologies. We propose a three-target recognition-mediated proximity ligation assay for the precise identification of sEV subtypes utilizing three specifically designed probes: one for the exosomal surface protein CD63 recognition, one for fixing the biolipid layer, and the third for the identification of distinctive protein associated with a specific subtype of sEVs (L1CAM positive sEVs).
View Article and Find Full Text PDFAmbient coarse particulate matter pollution and hospital admissions for schizophrenia.
Schizophr Res
January 2025
Department of Occupational and Environmental Health, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, China; Key Laboratory of Environment and Genes Related to Diseases (Xi'an Jiaotong University), Ministry of Education, China; Key Laboratory for Disease Prevention and Control and Health Promotion of Shaanxi Province, Xi'an, Shaanxi, China; Key Laboratory of Trace Elements and Endemic Diseases in Ministry of Health, Xi'an, Shaanxi, China. Electronic address:
Objective: To investigate the association between ambient coarse particulate matter (PM) pollution and risk of acute schizophrenia episodes.
Methods: A time-stratified case-crossover study with a two-stage analytical approach was conducted to investigate the association between ambient PM pollution and schizophrenia admissions (an indicator for acute schizophrenia episodes) across 259 Chinese cities of prefecture-level or above during 2013-2017. A conditional logistic regression model was constructed to estimate city-specific changes in hospital admissions for schizophrenia associated with per interquartile range (IQR) increase in ambient PM, and the overall associations were obtained by pooling the city-specific associations using the random-effects model.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!