CAJ | 학술논문

建立蔬菜中吡虫啉、噻虫嗪、烯啶虫胺、啶虫脒、呋虫胺、噻虫啉和噻虫胺等烟碱类农药残留的QuEChERS前处理技术与LC-Q-TOF-MS高分辨质谱分析方法。优化了烟碱农药残留QuEChERS前处理方法中石墨化碳黑、硫酸镁与氯化钠用量，样品离心、过滤，高效液相色谱分析，一级TOF-MS和二级IDA-MS高分辨质谱模式进行检测，外标法定量分析。结果表明，7种烟碱在5 min内实现分离，5-400μg/L浓度范围内线性关系好，相关系数r达到0.999；7种烟碱方法检出限分别是1.8、1.8、1.8、0.45、0.1、0.3和2.4μg/L。本方法操作简单、准确，可快速定性和定量分析蔬菜中烟碱农药残留。
건립소채중필충람、새충진、희정충알、정충미、부충알、새충람화새충알등연감류농약잔류적QuEChERS전처리기술여LC-Q-TOF-MS고분변질보분석방법。우화료연감농약잔류QuEChERS전처리방법중석묵화탄흑、류산미여록화납용량，양품리심、과려，고효액상색보분석，일급TOF-MS화이급IDA-MS고분변질보모식진행검측，외표법정량분석。결과표명，7충연감재5 min내실현분리，5-400μg/L농도범위내선성관계호，상관계수r체도0.999；7충연감방법검출한분별시1.8、1.8、1.8、0.45、0.1、0.3화2.4μg/L。본방법조작간단、준학，가쾌속정성화정량분석소채중연감농약잔류。
It was established for the determination of imidacloprid, thiamethoxam, nitenpyram, acetamiprid, dinotefuran, thiacloprid and chothianidin in vegetables by LC-Q-TOF-MS with QuEChERS. The samples were pretreated to extract the nicotinoid insecticides by QuEChERS about the dosage of graphitized carbon black, magnesium sulfate and sodium chloride. The samples were centrifuged with ultrafiltration centrifugal tube before injection into the chromatographic system, which were monitored in the TOF-MS and IDA-MS mode. The result showed that the seven kinds of nicotinoids were separated in the five minutes. The concentration of nicotinoids in the range of 5-400μg/L was linearly correlated to the peak area, with correlation coefficients greater than 0.999, and limit of detection 1.8, 1.8, 1.8, 0.45, 0.1, 0.3 and 2.4μg/L, respectively. It was a simple, quick and accurate analytical method for the detection of nicotinoids residues in vegetables.