Results 11 to 20 of about 320,261 (288)

Recent advances in matrix solid-phase dispersion

TrAC Trends in Analytical Chemistry, 2006
This review updates our knowledge on matrix solid-phase dispersion (MSPD), a sample-preparation technique that is increasingly used for the extraction of organic environmental pollutants and drugs from a variety of solid, semi-solid and viscous environmental and biological matrices.
Kristenson, E. Maria, Brinkman, U. A. Th., Ramos, Lourdes   +2 more
openaire   +4 more sources

Silica Modified with Polyaniline as a Potential Sorbent for Matrix Solid Phase Dispersion (MSPD) and Dispersive Solid Phase Extraction (d-SPE) of Plant Samples. [PDF]

Materials (Basel), 2018
Polyaniline (PANI) is one of the best known conductive polymers with multiple applications. Recently, it was also used in separation techniques, mostly as a component of composites for solid-phase microextraction (SPME). In the present paper, sorbent obtained by in situ polymerization of aniline directly on silica gel particles (Si-PANI) was used for ...
Sowa I, Wójciak-Kosior M, Strzemski M, Sawicki J, Staniak M, Dresler S, Szwerc W, Mołdoch J, Latalski M.   +8 more
europepmc   +5 more sources

The influence of pre-compounding techniques and surface modification of nano-silica on the properties of thermoplastic natural rubber

eXPRESS Polymer Letters, 2021
Thermoplastic natural rubber (TPNR) nanocomposites based on epoxidized natural rubber (ENR) and polypropylene (PP) blends filled with 2.5 wt% nano-silica (SiO2) were prepared using a two-step compounding process to improve the dispersion of SiO2 in TPNR.
M. Jarnthong, Z. Peng, N. Lopattananon, C. Nakason   +3 more
doaj   +1 more source

Effect of Pretreatment on Detection of 37 Pesticide Residues in Chrysanthemum indicum

Journal of Analytical Methods in Chemistry, 2021
This study aimed to develop a method, followed by gas chromatography-mass spectrometry, for detecting 37 pesticides in Chrysanthemum indicum (C. indicum) and investigating the decrease in the matrix-induced enhancement effect.
Xiao-Ying Lu, Yan-Qin Ouyang, Wei-Ya Zeng, Cui-Qing Lin, Lu-Hua Xiao, Gui-Hua Luo, Ruo-Ting Zhan, Ping Yan   +7 more
doaj   +1 more source

Effects of various second phase ratios and contents on microstructure and mechanical properties of eutectic Sn58Bi alloy

Materials & Design, 2022
A distinctive low melting point heterostructure alloy (LMH) Sn-Bi-Cu-Zn-Ag-Sb was prepared by introducing different ratios and contents of second phase into the eutectic Sn58Bi alloy (SBE).
Yuhang Wei, Xiuchen Zhao, Zhichao Liu, Chengwen Tan   +3 more
doaj   +1 more source

Non-steroidal anti-inflammatory drugs (NSAIDs) in the environment: Updates on pretreatment and determination methods

Ecotoxicology and Environmental Safety, 2023
Non-steroidal anti-inflammatory drugs (NSAIDs) are widely used in human and animal health care to reduce persistent inflammation, pain and fever because of their anti-inflammatory, analgesic and antipyretic effects.
Yu Zhou, Jia-yuan Lin, Yu Bian, Chen-jie Ren, Ni Xiao-li, Chun-yu Yang, Xu Xiao-xue, Xue-song Feng   +7 more
doaj   +1 more source

Matrix Solid-Phase Dispersion Extraction of Sulfonamides from Blood [PDF]

Journal of Chromatographic Science, 2012
Matrix solid-phase dispersion extraction was applied to the extraction of sulfadiazine, sulfamerazine, and sulfamethazine from human and animal bloods. The separation and determination of the analytes were carried out by high-performance liquid chromatography. The effects of the types of the dispersion adsorbents and elution solvents were investigated,
Yupu, Zhang, Xu, Xu, He, Liu, Yujuan, Zhai, Ye, Sun, Shuo, Sun, Hanqi, Zhang, Aimin, Yu, Yinghua, Wang   +8 more
openaire   +2 more sources

Recent Advances in Molecular-Imprinting-Based Solid-Phase Extraction of Antibiotics Residues Coupled With Chromatographic Analysis

Frontiers in Environmental Chemistry, 2021
Abuse and residues of antibiotics cause great harm to organisms and the environment. Appropriate sample pretreatment is usually required for sensitive determination, because of the low content presence of a variety of antibiotics in complicated matrices.
Dani Sun, Dani Sun, Zhihua Song, Yue Zhang, Yue Zhang, Yixiao Wang, Yixiao Wang, Min Lv, Huitao Liu, Liyan Wang, Liyan Wang, Wenhui Lu, Jinhua Li, Jinhua Li, Jinhua Li, Lingxin Chen, Lingxin Chen   +16 more
doaj   +1 more source

Investigation of the Microstructure and Strengthening Mechanisms of Ti-6Cu-8Nb-xCr3C2 Alloy through Vacuum Sintering Process [PDF]

Archives of Metallurgy and Materials, 2022
This study mixes four different powders to produce Ti-6Cu-8Nb-xCr3C2 (x = 1, 3, and 5 mass%) alloys in three different proportions. The experimental results reveal that when 5 mass% Cr3C2 was added to the Ti-6Cu-8Nb alloys, the specimen possessed optimal
Shih-Hsien Chang, Chen-Yu Weng, Kuo-Tsung Huang, Cheng Liang   +3 more
doaj   +1 more source

Combination of (M)DSC and surface analysis to study the phase behaviour and drug distribution of ternary solid dispersions [PDF]

, 2015
Purpose: Miscibility of the different compounds that make up a solid dispersion based formulation play a crucial role in the drug release profile and physical stability of the solid dispersion as it defines the phase behaviour of the dispersion.
A Paudel, A Rafati, C Leuner, CL-N Vo, Clive J. Roberts, D Alsteens, David J. Scurr, F Kreye, F Wan, G Mooter Van den, G Mooter Van den, Guy Van den Mooter, I Weuts, IM Kalogeras, J Adamcik, J Meeus, J Meeus, Joke Meeus, Katie Amssoms, M Gordon, M Tobyn, Martyn C. Davies, ME Lauer, ME Lauer, N Scoutaris, NT Paragkumar, S Janssens, S Janssens, S Janssens, S Qi, T Vasconcelos, Xinyong Chen   +31 more
core   +2 more sources