State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo 315211, PR China; School of Marine Sciences, Ningbo University, Ningbo 315211, PR China.
School of Marine Sciences, Ningbo University, Ningbo 315211, PR China.
Food Chem. 2021 Jun 15;347:129030. doi: 10.1016/j.foodchem.2021.129030. Epub 2021 Jan 12.
A modified quick, easy, cheap, effective, rugged, and safe (QuEChERs) method for determining triazine herbicide residues in bivalves (Mussels, Scallops, Cockles) was developed. The use of molecularly imprinted polymers (MIPs) as a selective purification material during dispersive-solid phase extraction (d-SPE) increased the removal rate of pigments interference. With 4% acidic acetonitrile as the organic modifier, the modified QuEChERs method achieved good extraction rate of herbicide residues. The satisfactory recoveries (80%-118%) and RSDs (1.0%-11.6%) of herbicide residues were obtained at three spiked levels. The limits of quantification of herbicide residues ranged from 0.10 μg/kg to 1.59 μg/kg. Further, the herbicide residues in bivalves collected in the eastern coasts of China was analyzed. The developed QuEChERs procedure coupled with GC-MS/MS was successfully applied to the herbicide residues detection in bivalves, and due to the extensive use of herbicides and the large consumption of bivalves in globally, the ongoing risk evaluation is needed.
建立了一种改良的快速、简便、廉价、有效、耐用和安全（QuEChERS）方法，用于测定双壳贝类（贻贝、扇贝、蛤）中的三嗪类除草剂残留。在分散固相萃取（d-SPE）过程中使用分子印迹聚合物（MIP）作为选择性净化材料，提高了对色素干扰的去除率。采用 4%酸性乙腈作为有机改性剂，改良的 QuEChERS 方法实现了对除草剂残留的良好提取率。在三个加标水平下，除草剂残留的回收率（80%-118%）和相对标准偏差（RSD）（1.0%-11.6%）均令人满意。除草剂残留的定量限范围为 0.10μg/kg 至 1.59μg/kg。此外，还分析了中国东部沿海地区采集的贝类中的除草剂残留。开发的 QuEChERS 程序与 GC-MS/MS 联用，成功应用于贝类中除草剂残留的检测，由于全球范围内广泛使用除草剂和大量消耗贝类，需要进行持续的风险评估。
