分析不同地区环境因素影响矿质元素在牛的不同部位富集状态的差异，评价不同牛肉的营养价值。采用电感耦合等离子体质谱法（Inductively Coupled Plasma Mass Spectrometry, ICP-MS）对采自西藏那曲牦牛、拉萨牦牛和广州市黄牛的不同脏器样品中的10 种矿物元素进行测定，通过含量差异的对比分析，全面评估那曲特殊地理环境与拉萨和广州市样本的微量元素在牛体内的富集状态和水平。那曲地区、拉萨地区和广州地区的样本之间的差异显著。牛肚的Ca 含量最高，为455.33~700.25 mg/kg。K 在肌肉中含量最高，在4 000.46~3 650.86 mg/kg 之间。那曲地区牦牛肉的K 含量显著高于拉萨和广州的牛肉。Na 在牛肌肉中含量相对不高，在580~698 mg/kg 之间。广州地区的牛肌肉中Na 含量显著高于藏区牦牛肉。肌肉，心脏和肝脏中Mg 含量显著高于肾脏，牛肚和牛肺。那曲地区牛肉Fe 含量最高，127.51 mg/kg。Zn 在牛肌肉中含量最高170.56~185.56 mg/kg 之间。Cu 在肝脏中含量最高，为11.65~16.31 mg/kg。那曲地区的牛不同脏器中矿质元素普遍高于拉萨地区和广州地区。结果显示不同产地的牛机体中的部分常量和微量矿质元素差异显著，可作为肉地域指纹分析溯源参考。

The effects of different environmental factors on enrichment of mineral elements in different organs of cattle were analyzed, and the nutritional value of different types of beef were evaluated. Using inductively coupled plasma mass spectrometry, ten mineral elements were analyzed in different organ samples of three species of cattle, namely yaks in Nagqu and Lhasa as well as yellow cattle in Guangzhou. The enrichment levels of trace elements in cattle were comprehensively evaluated by comparing the elemental contents in beef from Nagqu, Lhasa, and Guangzhou, each representing a unique geographical environment. Samples from Naqu, Lhasa, and Guangzhou showed significant differences. The highest calcium content was found in the tripe (455.33~700.25 mg/kg). The highest potassium content was detected in the muscle, ranging from 4 000.46 to 3 650.86 mg/kg. The potassium content of yak meat from the Nagqu region was significantly higher than that of the yak meat from Lhasa and Guangzhou. The sodium content in the muscle was relatively low, ranging from 580 to 698 mg/kg. The sodium content in the muscle of cattle in the Guangzhou area was significantly higher than that in yak meat from the Tibetan area. The magnesium contents in the muscle, heart, and liver were significantly higher than those in the kidney, tripe, and lung. Beef from the Naqu area showed the highest iron content (127.51 mg/kg). The maximum zinc content in the muscle was 170.56~185.56 mg/kg. The highest copper content was detected in the liver, ranging from 11.65 to 16.31 mg/kg. Overall, the mineral elements in different organs of cattle in the Naqu area were higher than those in cattle from the Lhasa and Guangzhou areas. Some major and trace mineral elements widely vary in beef from different origins, which can be used as an index for fingerprint and traceability analysis of meat.

西藏自治区科技计划项目（XZ202001ZY0058G）；西藏自治区食品药品检验研究院科研项目（XZSYJY-YJKYXM-2020-02）；广东省医学科研基金项目（B2021312）；广东省教育厅创新强校项目（2018GkQNCX047）；广东省教育厅“创新强校工程”项目（2019GCZX012）