Laser-induced breakdown spectroscopy (LIBS) is a rapidly evolving in-situ multi-element analysis technique that has significantly advanced the field of liquid analysis. This study employs a femtosecond laser for quantitative analysis of heavy metals in flowing liquids, exploring its detection sensitivity and accuracy. Femtosecond pulsed laser excitation of water in a dynamic environment generates plasma while effectively preventing liquid splashing. The flowing water column maintains a stable liquid surface, avoiding irregular laser focusing caused by surface fluctuations. Calibration curves for chromium (Cr), lead (Pb), and copper (Cu) were established under optimized conditions at different numbers of spectral accumulations (NSAs). The limit of detection for Cr, Pb, and Cu were determined to be 0.061, 0.045, and 0.023; 0.475, 0.341, and 0.221; and 0.040, 0.027, and 0.019 μg/mL, respectively, for NSAs of 10, 20, and 50. Additionally, the R values of the polynomial fits exceeded 0.99, underscoring the reliability of the experimental approach. This study provides valuable insights into optimizing the analytical performance of LIBS for heavy metal detection in aqueous solutions, making it a powerful tool for environmental monitoring and industrial applications.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.talanta.2024.127512 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
A qualitative study assessing acceptability and appropriateness of a technology-assisted mental health intervention by community frontline workers: mPareshan implementation research in rural Pakistan.
BMC Psychiatry
January 2025
Brain and Mind Institute, Aga Khan University, Stadium Road, Karachi, 74800, Pakistan.
Background: With a shortage of mental health specialists and a significant rural population in Pakistan, leveraging community-based healthcare workers becomes crucial to address mental health needs. Equipping the healthcare workers with digital tools such as mobile applications have the potential to increase access to mental health support in low-resource areas. This study examines the acceptability, appropriateness, barriers, and facilitators to implementing a technology-assisted mental health intervention (mPareshan) delivered by Lady Health Workers (LHWs) in rural Pakistan.
View Article and Find Full Text PDFEfficacy of acceptance and commitment therapy on psychological rehabilitation in cancer patients treated with proton and heavy ion therapy: a non-randomized controlled trial.
Support Care Cancer
January 2025
Department of Nursing, Shanghai Proton and Heavy Ion Center, Shanghai Key Laboratory of Radiation Oncology (20dz2261000), Shanghai Engineering Research Center of Proton and Heavy Ion Radiation Therapy, Fudan University Cancer Hospital, Shanghai, China.
Objective: To develop an appropriate intervention utilizing acceptance and commitment therapy (ACT) tailored specifically for cancer patients undergoing radiotherapy, and to investigate its impact on hope, psychological resilience, psychological flexibility, and psychological distress among cancer patients receiving proton and heavy ion therapy.
Methods: Eighty participants were allocated into an intervention group (n = 40) or a control group (n = 40) based on their admission time. The control and intervention groups underwent a 3-week health education program, with the intervention group additionally participating in a 3-week, 6-session acceptance and commitment therapy (ACT) group psychological intervention.
Spatial distribution of heavy metal assessment in beach sediment due to bauxite mining in Kuantan, Pahang, Peninsular Malaysia.
Environ Geochem Health
January 2025
Department of Biochemistry, College of Sciences, King Saud University, 11451, Riyadh, Saudi Arabia.
The effect of open-pit bauxite mining on beach sediment contamination in the urban coastal environment of Kuantan City, Malaysia, was investigated. The contents of 11 heavy metals (Pb, Cd, Al, Mn, Cu, Zn, Fe, As, Ni, Cr, and Ag) in 30 samples from Kuantan beach sediment zones (supratidal, intertidal, and subtidal) were determined using inductively coupled plasma optical emission spectrometry followed by contamination indexes, Pearson's correlation analysis, and principal component analysis (PCA). The results indicated that Cd, As, Ni, and Ag values in beach sediment zones were significantly higher compared to background values.
View Article and Find Full Text PDFEffectiveness of Outpatient Chronic Pain Management for Middle-Aged Patients by Internet Hospitals: Retrospective Cohort Study.
JMIR Med Inform
December 2024
Department of Pain Management, West China Hospital, Sichuan University, No 37 Guoxue Xiang, Wuhou District, Chengdu, 610041, China, 86 18980601501.
Background: Chronic pain is widespread and carries a heavy disease burden, and there is a lack of effective outpatient pain management. As an emerging internet medical platform in China, internet hospitals have been successfully applied for the management of chronic diseases. There are also a certain number of patients with chronic pain that use internet hospitals for pain management.
View Article and Find Full Text PDFModeling Hydrogen Markets: Energy System Model Development Status and Decarbonization Scenario Results.
Energy Clim Chang
December 2024
South China University of Technology, School of Future Technology, 777 Xingye Ave East, Panyu District, Guangzhou, Guangdong, 511442, China.
Hydrogen can be used as an energy carrier and chemical feedstock to reduce greenhouse gas emissions, especially in difficult-to-decarbonize markets such as medium- and heavy-duty vehicles, aviation and maritime, iron and steel, and the production of fuels and chemicals. Significant literature has been accumulated on engineering-based assessments of various hydrogen technologies, and real-world projects are validating technology performance at larger scales and for low-carbon supply chains. While energy system models continue to be updated to track this progress, many are currently limited in their representation of hydrogen, and as a group they tend to generate highly variable results under decarbonization constraints.
View Article and Find Full Text PDFWant 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!