Nanoparticle-assisted metal–organic framework (MOF) enhanced laser-induced breakdown spectroscopy for the detection of heavy metal ions in liquid samples

2021 ◽  
Vol 36 (10) ◽  
pp. 2173-2184
Author(s):  
Xiaojiao Liu ◽  
Jiao Liu ◽  
Qingyu Lin ◽  
Wenlong Liao ◽  
Tao Yang ◽  
...  
Keyword(s):  
Heavy Metal Ions ◽  
Metal Organic Framework ◽  
Laser Induced Breakdown Spectroscopy ◽  
Practical Applications ◽  
Breakdown Spectroscopy ◽  
Liquid Samples ◽  
Laser Induced Breakdown ◽  
Plasma Quenching ◽  
Metal Organic ◽  
Low Sensitivity

In recent years, the low sensitivity caused by plasma quenching has restricted the development of LIBS technology in practical applications.

scholarly journals Analysis of Garnet by Laser-Induced Breakdown Spectroscopy—Two Practical Applications

Minerals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 705
Author(s):  
Peter A. Defnet ◽  
Michael A. Wise ◽  
Russell S. Harmon ◽  
Richard R. Hark ◽  
Keith Hilferding
Keyword(s):  
Optical Emission ◽  
Atomic Emission ◽  
Laser Induced Breakdown Spectroscopy ◽  
Support Vector ◽  
Success Rates ◽  
Practical Applications ◽  
Chemical Complexity ◽  
Geochemical Fingerprinting ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

Laser-induced breakdown spectroscopy (LIBS) is a simple and straightforward technique of atomic emission spectroscopy that can provide multi-element detection and quantification in any material, in-situ and in real time because all elements emit in the 200–900 nm spectral range of the LIBS optical emission. This study evaluated two practical applications of LIBS—validation of labels assigned to garnets in museum collections and discrimination of LCT (lithium-cesium-tantalum) and NYF (niobium, yttrium and fluorine) pegmatites based on garnet geochemical fingerprinting, both of which could be implemented on site in a museum or field setting with a handheld LIBS analyzer. Major element compositions were determined using electron microprobe analysis for a suite of 208 garnets from 24 countries to determine garnet type. Both commercial laboratory and handheld analyzers were then used to acquire LIBS broadband spectra that were chemometrically processed by partial least squares discriminant analysis (PLSDA) and linear support vector machine classification (SVM). High attribution success rates (>98%) were obtained using PLSDA and SVM for the handheld data suggesting that LIBS could be used in a museum setting to assign garnet type quickly and accurately. LIBS also identifies changes in garnet composition associated with increasing mineral and chemical complexity of LCT and NYF pegmatites.

Ultra-trace metallic element detection in liquid samples using laser induced breakdown spectroscopy based on matrix conversion and crosslinked PVA polymer membrane

2016 ◽  
Vol 31 (8) ◽  
pp. 1622-1630 ◽  
Author(s):  
Qingyu Lin ◽  
Xiaodan Han ◽  
Jie Wang ◽  
Zhimei Wei ◽  
Kunping Liu ◽  
...  
Keyword(s):  
Laser Induced Breakdown Spectroscopy ◽  
Metallic Elements ◽  
Breakdown Spectroscopy ◽  
Liquid Samples ◽  
Metallic Element ◽  
Laser Induced Breakdown ◽  
Ultra Trace ◽  
Trace Metallic Element ◽  
Matrix Conversion ◽  
Sensitive Method

A novel, sensitive method based on crosslinked polyvinyl alcohol (PVA) was developed for determining trace-amounts of metallic elements in liquid samples using laser induced breakdown spectroscopy (LIBS).

Femtosecond Laser Machining of Silica and Transparent Materials

2014 ◽  
Vol 525 ◽  
pp. 128-132 ◽  
Author(s):  
M. Yu. Babiy ◽  
S. S. Golik ◽  
A. V. Kolesnikov ◽  
F. G. Bystrov
Keyword(s):  
Femtosecond Laser ◽  
Focal Spot ◽  
Optical Breakdown ◽  
Laser Induced Breakdown Spectroscopy ◽  
Laser Machining ◽  
Practical Applications ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Laser Spark ◽  
Transparent Materials

Recently, interest in the study of processes occurring in the optical breakdown on the surface of solid targets associated with the increasing number of practical applications of the laser spark, such as laser induced breakdown spectroscopy and micro-and nanomaterials processing. One of the most important tasks - to reduce the diameter of the focal spot, because the size of the modifications directly related to it. However, it is not the only problem faced by the transition to sub-micron range modifications.

Metal-chelate induced nanoparticle aggregation enhanced laser-induced breakdown spectroscopy for ultra-sensitive detection of trace metal ions in liquid samples

2020 ◽  
Vol 35 (1) ◽  
pp. 188-197 ◽  
Author(s):  
Xiaojiao Liu ◽  
Qingyu Lin ◽  
Yonghui Tian ◽  
Wenlong Liao ◽  
Tao Yang ◽  
...  
Keyword(s):  
Trace Metal ◽  
Metal Ions ◽  
Metal Chelate ◽  
Laser Induced Breakdown Spectroscopy ◽  
Nanoparticle Aggregation ◽  
Trace Metal Ions ◽  
Breakdown Spectroscopy ◽  
Liquid Samples ◽  
Laser Induced Breakdown ◽  
Matrix Conversion

A simple but efficient strategy based on a matrix conversion method has been developed for determining trace metal ions in liquid samples using laser-induced breakdown spectroscopy (LIBS).

scholarly journals Filler-Modified Castor Oil-Based Polyurethane Foam for the Removal of Aqueous Heavy Metals Detected Using Laser-Induced Breakdown Spectroscopy (LIBS) Technique

Polymers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 903 ◽  
Author(s):  
M. Iqhrammullah ◽  
Marlina ◽  
R. Hedwig ◽  
I. Karnadi ◽  
K. H. Kurniawan ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Polyurethane Foam ◽  
Castor Oil ◽  
Heavy Metal Ions ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Adsorption Performance ◽  
Laser Induced Breakdown

The use of polymeric material in heavy metal removal from wastewater is trending. Heavy metal removal from wastewater of the industrial process is of utmost importance in green/sustainable manufacturing. Production of absorbent materials from a natural source for industrial wastewater has been on the increase. In this research, polyurethane foam (PUF), an adsorbent used by industries to adsorb heavy metal from wastewater, was prepared from a renewable source. Castor oil-based polyurethane foam (COPUF) was produced and modified for improved adsorption performance using fillers, analyzed with laser-induced breakdown spectroscopy (LIBS). The fillers (zeolite, bentonite, and activated carbon) were added to the COPUF matrix allowing the modification on its surface morphology and charge. The materials were characterized using Fourier-transform infrared (FTIR), scanning electron microscopy (SEM), and thermal gravimetry analysis (TGA), while their adsorption performance was studied by comparing the LIBS spectra. The bentonite-modified COPUF (B/COPUF) gave the highest value of the normalized Pb I (405.7 nm) line intensity (2.3), followed by zeolite-modified COPUF (Z/COPUF) (1.9), and activated carbon-modified COPUF (AC/COPUF) (0.2), which indicates the adsorption performance of Pb2+ on the respective materials. The heavy metal ions’ adsorption on the B/COPUF dominantly resulted from the electrostatic attraction. This study demonstrated the potential use of B/COPUF in adsorption and LIBS quantitative analysis of aqueous heavy metal ions.

scholarly journals Improvement of laser induced breakdown spectroscopy signal for sodium chloride solution

2018 ◽  
Vol 14 ◽  
pp. 429-433 ◽  
Author(s):  
Hanin Athirah Harun ◽  
Roslinda Zainal
Keyword(s):  
Sodium Chloride ◽  
Treatment Approach ◽  
Freezing Point ◽  
High Energy ◽  
Laser Induced Breakdown Spectroscopy ◽  
Liquid Sample ◽  
Breakdown Spectroscopy ◽  
Liquid Samples ◽  
Laser Induced Breakdown ◽  
Pre Treatment

Laser induced breakdown spectroscopy (LIBS) is one of the analytical spectroscopy technique used in determining elemental composition of solid, liquid or gas sample using high energy laser pulse. However, LIBS technique associated with liquid sample often suffers from strong splashing and shockwave, thereby affecting the LIBS experiment repeatability and performance analysis. Therefore, a simple and quick-freeze sample pre-treatment approach using Peltier Thermoelectric Cooler (TEC) to solidify the water is applied to maintain the inherent homogeneity and chemical composition of the initial liquid sample before each LIBS analysis. This approach successfully solidified and maintained the liquid sample at its freezing point throughout the LIBS signal acquisition process. In this work, the qualitative analysis liquid samples and its solidified form, consisting of 0.5, 1.0, 1.5 and 2.0 mol/L sodium chloride (NaCl) were determined under similar experimental conditions by using LIBS. Plasmas were produced by focusing the output of Nd: YAG laser (1064nm, 6 ns and 1 Hz) on the surface of the bulk NaCl solution and its solidified form. LIBS signatures for sodium (Na) and chlorine (Cl) atomic emission lines (589.00 and 499.55 nm, respectively) were collected for estimating sodium and chlorine depositions in NaCl solutions to indicate correlation between their assay and LIBS measurements. For solidified sample, Na and Cl showed improved signal-to-noise ratio and limits of detection (47.8% and 8.8%, respectively) without the difficulties usually associated with liquid samples, demonstrating the benefits of this sample pre-treatment approach.

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