The discovery of magnetic nanomaterials has bestowed a tremendous impact on the improvement and development of many disciplines, including analytical chemistry because their special properties make them very suitable for wide applications. Owing to their superparamagnetism, selective adsorption ability as well as easy separation and surface modification, these unique nanomaterials unfold excellent performance in extracting and enriching a variety of target analytes. When coupled with gas chromatography-mass spectrometry, high-performance liquid chromatography-mass spectrometry and other instrumental analysis techniques, it will enable the detection and identification of trace pollutants in a single and rapid analysis. This review article gives an insight into recent advances in the synthesis, modification and application of magnetic nanomaterials for the preconcentration of environmental pollutants.

磁性纳米材料的发现已对包括分析化学在内的许多学科的改进和发展产生了巨大影响，因为它们的特殊性能使其非常适合广泛的应用。由于其超顺磁性，选择性吸附能力以及易于分离和表面改性，这些独特的纳米材料在提取和富集各种目标分析物方面展现出卓越的性能。与气相色谱-质谱法，高效液相色谱-质谱法和其他仪器分析技术结合使用，它将能够在一次快速分析中检测和鉴定痕量污染物。这篇评论文章深入介绍了合成技术的最新进展，