CAJ | 학술논문

采用自制微萃取瓶富集-高效液相色谱法同时测定乌龙茶饮料中苯脲类和苯磺酰脲除草剂。正辛醇作萃取剂，反相C18色谱柱，甲醇∶水=70∶30流动相，流速1.0mL/min，230nm紫外检测。采用基质校准工作曲线，氟嘧磺隆和利谷隆在0.06-6.0μg/mL范围内线性良好。平均回收率分别为74.83%和98.67%，相对标准偏差小于1.8%；方法检出限为5ng/mL。
채용자제미췌취병부집-고효액상색보법동시측정오룡다음료중분뇨류화분광선뇨제초제。정신순작췌취제，반상C18색보주，갑순∶수=70∶30류동상，류속1.0mL/min，230nm자외검측。채용기질교준공작곡선，불밀광륭화리곡륭재0.06-6.0μg/mL범위내선성량호。평균회수솔분별위74.83%화98.67%，상대표준편차소우1.8%；방법검출한위5ng/mL。
The urea herbicide was determined by microextraction flask-high performance liquid chromatography in tea drinks. Herbicide were separated on C18 column (5μm, 250×4.6mm i.d.) employing methanol: water=70:30 as mobile phase and determined using UV detector at 230nm. The flow rate of mobile phase was 1.0mL/min. n-Octyl alcohol was used as extractant. In this paper the regression equations of Primisulfuron-methyl and linoron were determinated in blank real samples, and the linearity was good in the range of 60-6000ng/mL with the correlation coefficients more than 0.9993. The average recoveries were 74.83% and 98.67% respectively. The relative standard deviations were less than 1.8%. The MDL is 50μg/L.