Determination of the efficiency and removal mechanism of cobalt by crab shell particles

2004 ◽  
Vol 79 (12) ◽  
pp. 1388-1394 ◽  
Author(s):  
Moo-Yeal Lee ◽  
Kyung-Jin Hong ◽  
Toshio Kajiuchi ◽  
Ji-Won Yang
Keyword(s):  
Removal Mechanism ◽  
Crab Shell ◽  
Shell Particles

scholarly journals Multielemental Determination of Rare Earth Elements in Seawater by Inductively Coupled Plasma Mass Spectrometry (ICP-MS) After Matrix Separation and Pre-concentration With Crab Shell Particles

2021 ◽  
Vol 9 ◽  
Author(s):  
Danyi Li ◽  
Xunuo Wang ◽  
Ke Huang ◽  
Zenghuan Wang
Keyword(s):  
Mass Spectrometry ◽  
Rare Earth ◽  
Inductively Coupled Plasma ◽  
Crab Shell ◽  
Inductively Coupled ◽  
Matrix Separation ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Shell Particles

Considering the unique characteristics of rare earth elements (REEs), the presence of REEs beyond specific limits will adversely affect the environment and it can be employed as a powerful probe for investigating hydrogeochemical processes. This requires sensitive determination of REEs in natural seawater. A matrix separation and pre-concentration technique using the mini-column packed with crab shell particles (CSPs) by inductively coupled plasma mass spectrometry (ICP-MS) as a means of determination has been developed. The aim of the proposed method was to simultaneously determine 16 REEs (Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) at trace or ultra-trace concentrations in seawater. The biosorption capacity of CSPs was found to achieve 1.246–1.250 mg g−1 for all elements. In order to optimize performance of the method, the effects of analytical parameters concerning oscillation time, solution pH, salt concentration and eluent concentration were explored. Under the optimal conditions, the detection limits of REEs ranged 0.0006–0.0088 μg L−1, and relative standard deviations (n = 7) varied between 0.55 and 1.39%. The accuracy of developed method was evidenced by applying it to the analysis of REEs in seawater samples, with the overall recoveries at a level of 95.3 and 104.4%. Together, this work provides a promising and cost-effective CSPs-based pretreatment approach for REEs detection in sea environment.

Characteristics of lead removal by crab shell particles

1998 ◽  
Vol 33 (7) ◽  
pp. 749-753 ◽  
Author(s):  
Moo-Yeal Lee ◽  
Sung-Ho Lee ◽  
Hyun-Jae Shin ◽  
Toshio Kajiuchi ◽  
Ji-Won Yang
Keyword(s):  
Lead Removal ◽  
Crab Shell ◽  
Shell Particles

scholarly journals Bioanalytical Method Optimization for the Therapeutic Drug Monitoring of Vancomycin

2017 ◽  
Vol 2 (2) ◽  
pp. 89-95
Author(s):  
Maria Mercedes De Zan
Keyword(s):  
Therapeutic Drug Monitoring ◽  
Drug Monitoring ◽  
High Performance ◽  
European Medicines Agency ◽  
Therapeutic Drug ◽  
Core Shell ◽  
Sample Treatment ◽  
Method Optimization ◽  
Shell Particles

Chemometric optimization and validation of a method based on High Performance Liquid Chromatography (HPLC) using core – shell particles for the determination of Vancomycin (VMC) in human plasma is reported. The combination of the efficiency of the core-shell particles and the benefits of the design of experiments allowed the successful determination of VCM, even in presence of several interferents. Selectivity, linearity, accuracy and precision were accomplished according to the European Medicines Agency (EMA) guideline, within the concentration range of 1.00 – 60.0 μg/mL of VCM. It is noteworthy that this method requires small amount of sample and solvents, and the sample treatment is simple and no time-consuming. Thus, this method becomes a simple and high-throughput alternative to therapeutic drug monitoring in treated patients, as well as an analytical procedure that conforms to the principles of the green chemistry.

An examination of the uptake of lanthanum from aqueous solution by crab shell particles

2009 ◽  
Vol 152 (1) ◽  
pp. 116-121 ◽  
Author(s):  
K. Vijayaraghavan ◽  
Arun Mahadevan ◽  
Umid Man Joshi ◽  
R. Balasubramanian
Keyword(s):  
Aqueous Solution ◽  
Crab Shell ◽  
Shell Particles

scholarly journals Core-Shell Columns in High-Performance Liquid Chromatography: Food Analysis Applications

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Raffaella Preti
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Food Analysis ◽  
High Performance ◽  
Separation Efficiency ◽  
New Technology ◽  
Core Shell ◽  
Shell Particles

The increased separation efficiency provided by the new technology of column packed with core-shell particles in high-performance liquid chromatography (HPLC) has resulted in their widespread diffusion in several analytical fields: from pharmaceutical, biological, environmental, and toxicological. The present paper presents their most recent applications in food analysis. Their use has proved to be particularly advantageous for the determination of compounds at trace levels or when a large amount of samples must be analyzed fast using reliable and solvent-saving apparatus. The literature hereby described shows how the outstanding performances provided by core-shell particles column on a traditional HPLC instruments are comparable to those obtained with a costly UHPLC instrumentation, making this novel column a promising key tool in food analysis.

scholarly journals Influence of Mie scattering on nanoparticles with different particle sizes and shapes: Photometry and analytical ultracentrifugation with absorption optics

2005 ◽  
Vol 70 (3) ◽  
pp. 361-369 ◽  
Author(s):  
M.D. Lechner
Keyword(s):  
Analytical Ultracentrifugation ◽  
Mie Scattering ◽  
Precise Determination ◽  
Core Shell ◽  
Particle Sizes ◽  
Wide Range ◽  
Photometric Measurements ◽  
Shell Particles ◽  
Reliable Methods

Nanoparticles are used in large quantities for very different applications. A precise determination of the diameter and the particle size distribution which is responsible for the application properties is therefore essential. Reliable methods for measuring the above mentioned quantities are photometric measurements and analytical ultracentrifugation with an UV optics detector. Both methods are ruled by the Mie effect, that is scattering and absorption of the particles as function of the diameter, the wavelength, and the shape of the particles. The extinction coefficients ?=?/c for spheres, rods, and core shell particles have been calculated and plotted over a wide range of the size parameter ?d/?. Two examples for multimodal latex particles and core shell particles have been given and demonstrate the applicability of the method.

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