Multi-Residue Determination of 7 β-Agonists in Liver and Meat Using Gas Chromatography-Mass Spectrometry

Meso-tetra(4-sulfonatophenyl)porphyrin silver/Ag nanoparticles/graphene-phase C3N4 with a sandwich-like structure and double-faced active centers via two-step room-temperature photocatalytic synthesis for ractopamine detection

“…22 Subsequently, the monitoring and determination of RAC are extremely significant for food safety and human health. There are various highly selective and sensitive analytical methods for detecting RAC, such as high performance liquid chromatography and mass spectrometry, etc., 23,24 but their complicated operation, long time and high cost limit their wide application. 25,26 Hence, it is necessary to develop a convenient, low-cost, and highly sensitive RAC detection method.…”

Rapid Detection of Ractopamine and Salbutamol in Swine Urine by Immunochromatography Based on Selenium Nanoparticles

“…The current detection methods of RAC and SAL are mainly divided into physical-chemical analysis and immuno-analysis. Physical-chemical analysis methods include high-performance liquid chromatography (HPLC), 7 , 8 gas chromatography-mass spectrometry (GC-MS), 9 , 10 and liquid chromatography-mass spectrometry (LC-MS). 11 These methods offer the advantages of high accuracy, good repeatability and quantitative realization.…”

Multi-functional porous organic polymers for highly-efficient solid-phase extraction of β-agonists and β-blockers in milk

“…10 Among these strategies, SPE has been the most frequently used method owing to several advantages: low reagent consumption and no requirement of expensive apparatus, 11,12 high sensitivity and good recovery with minimal sample transfer, [13][14][15][16] enhanced simplicity of operation with robustness, 17 and great safety with less exposure to toxic agents. 18,19 The performance of the SPE technique depends on both the adsorption capacity and adsorption/desorption kinetics, and the SPE adsorbent directly affects the extraction efficiency and the analysis sensitivity. Thus, during the past several years, signicant efforts have been made towards the development and characterization of advanced sorbent materials, such as molecularly imprinted polymers (MIPs), 20,21 graphene-based nanocomposites, [22][23][24][25] functionalized covalent organic frameworks (COFs) [26][27][28] and magnetic nanoparticles, [29][30][31][32] to enhance selectivity or specicity towards target analytes and improve adsorption capacity.…”