In recent years, antibiotics have become widely used in animal breeding. The application of antibiotics in livestock may lead to the presence of antibiotic residues in animal‐derived foods, especially meat, that may pose a threat to human health. In this study, 26 common antibiotics (eight sulfonamides, nine fluoroquinolones, four tetracyclines, and five macrolides) were screened in 88 meat samples (cattle muscles and sheep muscles, kidneys, and livers) obtained from southern Xinjiang. The antibiotics were screened via the clean‐up step based on solid‐phase extraction and determined through ultraperformance liquid chromatography–tandem mass spectrometry. Moreover, their risk to human health was analyzed. Overall, 16 antibiotics were detected with a total detection rate of 95.46%. The percentage of noncompliant samples was 28.41% with an exceedance maximum residue limit of 1.14%. The illegal use rate of the antibiotic norfloxacin was 27.27%. The estimated daily exposure doses of all compounds in adults were <102.218 ng/kg bw/day even after applying the worst‐case scenario approach. This result demonstrated that the antibiotic residues in the tested samples imposed negligible harm to people's health and had an acceptable level of food safety risk. However, the high detection frequencies found in this work indicated that the risk of antibiotic residues could not be ignored given the cumulative risk of antibiotics, particularly the emergence of bacterial resistance, to the human body. The need for effective strategies and publicity for the judicious use of antibiotics to safeguard residents’ health is immediate.

This study provides a method for the simple preparation of BiI/Bi ₂ WO ₆ , and present important implications for prevention against antibiotic pollution.

The construction of photocatalysts that can activate persulfate (PS) efficiently is the key to the removal of water pollutants. In this study, a BiOI/BiOCOOH (IB) composite photocatalyst was prepared via an ultrasound-assisted solvothermal method, which activated PS under visible light to efficiently degrade ciprofloxacin (CIP). Compared with those of pure BiOCOOH and BiOI, the photocatalytic activity of IB was significantly improved. The 0.5 IB/PS system exhibited a maximum CIP (10 mg L⁻¹ 50 mL) degradation rate of 95.10% after 90 min of irradiation, and the photoreaction rate constant was 0.0304 min⁻¹, which was 100.7-fold that of BiOCOOH/PS, respectively. Through photolysis experiments involving different water quality and other antibiotics and dyes, the practical application potential and universal ability of the 0.5 IB/PS system were revealed. After five cycles, the degradation rate of CIP decreased by only 13.33%, which showed good cyclic stability. On the basis of a quenching experiment and electron spin resonance measurement, a stepped heterojunction photocatalytic mechanism involving charge transfer and separation was proposed. In addition, the degradation pathway of CIP was proposed based on LC–MS analysis. This work shows that the strategy of constructing a heterojunction photocatalyst to activate PS has great application potential in environmental water remediation.