Fechete Florin-Ioan, Popescu Maria, Mârza Sorin-Marian, Olar Loredana-Elena, Papuc Ionel, Beteg Florin-Ioan, Purdoiu Robert-Cristian, Codea Andrei Răzvan, Lăcătuș Caroline-Maria, Matei Ileana-Rodica, Lăcătuș Radu, Hoble Adela, Petrescu-Mag Ioan Valentin, Bora Florin-Dumitru
Clinical Sciences Department, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 3-5 Mănăștur Street, 400372 Cluj-Napoca, Romania.
Equine Clinic, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 3-5 Mănăștur Street, 400372 Cluj-Napoca, Romania.
Toxics. 2024 Oct 16;12(10):752. doi: 10.3390/toxics12100752.
Heavy metal contamination in agricultural soils presents serious environmental and health risks. This study assessed the bioaccumulation and spatial distribution of nickel, cadmium, zinc, lead, and copper within a sheep-based food chain in the Baia Mare region, Romania, which includes soil, green grass, sheep serum, and dairy products. Using inductively coupled plasma mass spectrometry (ICP-MS), we analyzed the concentrations of these metals and calculated bioconcentration factors (BCFs) to evaluate their transfer through trophic levels. Spatial analysis revealed that copper (up to 2528.20 mg/kg) and zinc (up to 1821.40 mg/kg) exceeded permissible limits, particularly near former mining sites. Elevated lead (807.59 mg/kg) and cadmium (2.94 mg/kg) were observed in industrial areas, while nickel and cobalt showed lower concentrations, but with localized peaks. Zinc was the most abundant metal in grass, while cadmium transferred efficiently to milk and cheese, raising potential health concerns. The results underscore the complex interplay between soil properties, contamination sources, and biological processes in heavy metal accumulation. These findings highlight the importance of continuous monitoring, risk assessment, and mitigation strategies to protect public health from potential exposure through contaminated dairy products.
农业土壤中的重金属污染带来了严重的环境和健康风险。本研究评估了罗马尼亚巴亚马雷地区以绵羊为基础的食物链中镍、镉、锌、铅和铜的生物累积及空间分布情况，该食物链包括土壤、青草、绵羊血清和乳制品。我们使用电感耦合等离子体质谱法（ICP-MS）分析了这些金属的浓度，并计算了生物富集系数（BCF），以评估它们在营养级之间的转移。空间分析表明，铜（高达2528.20毫克/千克）和锌（高达1821.40毫克/千克）超过了允许限值，特别是在以前的矿区附近。在工业区观察到铅（807.59毫克/千克）和镉（2.94毫克/千克）含量升高，而镍和钴的浓度较低，但有局部峰值。锌是青草中含量最丰富的金属，而镉有效地转移到了牛奶和奶酪中，引发了潜在的健康担忧。结果强调了土壤性质、污染源和重金属累积过程中生物过程之间的复杂相互作用。这些发现突出了持续监测、风险评估和缓解策略对于保护公众健康免受受污染乳制品潜在暴露影响的重要性。
