32827

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A rapid non-target screening method for determining prohibited substances in human urine using liquid chromatography/high-resolution tandem mass spectrometry.

Boyoung Han et al.

Drug testing and analysis, 11(3), 382-391 (2018-09-07)

Target analysis using liquid chromatography-tandem mass spectrometry is applied for rapidly detecting various prohibited doping substances. Frequent modification is required as additional substances are prohibited. We developed and validated a non-target screening method requiring no further modification because it analyzes

Confirmation of β-agonist residues in bovine retina and liver using HPLC-MS/MS and evaluation of matrix-dependent problems.

Patricia Regal et al.

Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment, 34(4), 598-607 (2016-12-14)

β-Agonists or β-adrenergic agonists are synthetic drugs sometimes used for therapeutic purposes in veterinary medicine. However, these compounds also belong to a class of illegal growth promoters that decrease the fat content in farm animals. The purpose of this study

Simultaneous determination of anabolic steroids and β-agonists in milk by QuEChERS and ultra high performance liquid chromatography tandem mass spectrometry.

Hongcheng Liu et al.

Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 1043, 176-186 (2016-08-21)

A simple, accurate and highly sensitive multiresidues method was developed for the determination of 9 anabolic steroids and 16 β-agonists in milk. Target compounds were extracted and separated by a modified QuEChERS (Quick, Easy, Cheap, Effective, Rugged, Safe) method with

Multiclass screening in urine by comprehensive two-dimensional liquid chromatography time of flight mass spectrometry for residues of sulphonamides, beta-agonists and steroids.

M H Blokland et al.

Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment, 35(9), 1703-1715 (2018-08-15)

Nowadays routine residue monitoring involves the analysis of many compounds from different classes, mainly in urine. In the past two decades, developments heavily focused on the use of mass spectrometers (MS) and faster and more sensitive MS detectors have reached

Evaluation of bi-functionalized mesoporous silicas as reversed phase/cation-exchange mixed-mode sorbents for multi-residue solid phase extraction of veterinary drug residues in meat samples.

Natalia Casado et al.

Talanta, 165, 223-230 (2017-02-06)

A SBA-15 type mesoporous silica was synthesized and bi-functionalized with octadecylsilane (C18) or octylsilane (C8), and sulfonic acid (SO

Magnetic graphene dispersive solid phase extraction-ultra performance liquid chromatography tandem mass spectrometry for determination of β-agonists in urine.

Geng Nan Wang et al.

Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 1067, 18-24 (2017-10-07)

In this study, a magnetic graphene-based dispersive solid phase extraction method was first developed for extraction of β-agonists in urine. During the experiments, the absorbent amount, sample pH, extraction time, elution solution and elution time were optimized respectively. The optimized

Evaluation of β-agonists in blood meal: Validation of determination method and potential pathway for reentry into the environment.

Suo Decheng et al.

Journal of chromatography. A, 1612, 460624-460624 (2019-11-02)

β-agonists, which have been illegally used in animal production in some countries, can induce bioaccumulation when blood is converted by rendering into blood meal. Unfortunately, available data on this topic are scarce, which result in lack of risk assessment. Therefore

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