CAJ | 학술논문

以甲醇为提取剂，过层析柱提取和净化稻米中的二甲戊灵，再采用高效液相色谱法分析检测稻米中的二甲戊灵残留。确定最佳检测条件为：检测波长238 nm，流动相比例V甲醇︰V水=85︰15，柱温30℃，流速1 mL/min，进样量20μL。在该检测条件下，对稻米添加标准样品的回收率为87.40%~94.16%，变异系数为3.38%~6.70%，仪器最小检出限为9.14×10-12g，方法最低检出浓度为0.005 mg/kg，符合农药残留检测要求。
이갑순위제취제，과층석주제취화정화도미중적이갑무령，재채용고효액상색보법분석검측도미중적이갑무령잔류。학정최가검측조건위：검측파장238 nm，류동상비례V갑순︰V수=85︰15，주온30℃，류속1 mL/min，진양량20μL。재해검측조건하，대도미첨가표준양품적회수솔위87.40%~94.16%，변이계수위3.38%~6.70%，의기최소검출한위9.14×10-12g，방법최저검출농도위0.005 mg/kg，부합농약잔류검측요구。
The Pendimethalin residues in rice were extracted and purified by methyl alcohol and chromatographic column, and then they were detected by HPLC. The determined optimal detecting conditions were as follows:detection wavelength, ratio of mobile phase, column temperature, flow velocity and sample size were 238 nm, Vmethyl alcohol︰Vwater=85︰15, 30℃, 1 mL/min and 20μL, respectively. With the optimal detection conditions, the recovery rate reached 87.40%~94.16%;the coefifcient of variation was from 3.38%to 6.70%;the minimum detection limit was 9.14×10-12 g;the lowest detectable concentration was 0.005 mg/kg. All above all met the requirements of pesticide residue detection.