CAJ | 학술논문

采用柱前衍生-气相色谱法-电子捕获检测器（GC-ECD）对饮用水中2,4-滴和灭草松进行检测。10 mL水样,经乙酸乙酯萃取后挥干溶剂,在二氯甲烷溶液中与碘甲烷、四丁基硫酸氢胺-氢氧化钠水溶液反应衍生,最后利用带电子捕获检测器的气相色谱仪进行检测。外标法定量,2,4-滴和灭草松在3.0-100.0μg/L范围内线性关系良好,相关系数分别为0.994和0.997。方法检出限（MDL）分别为：1.6μg/L和1.3μg/L。对2个添加水平进行回收实验,回收率分别为96.0%-126.6%,相对标准偏差（RSD,n=5）在4.9%-13.5%之间。本方法具有回收率高的优点,适用于饮用水中2,4-滴和灭草松的检测需要。
채용주전연생-기상색보법-전자포획검측기（GC-ECD）대음용수중2,4-적화멸초송진행검측。10 mL수양,경을산을지췌취후휘간용제,재이록갑완용액중여전갑완、사정기류산경알-경양화납수용액반응연생,최후이용대전자포획검측기적기상색보의진행검측。외표법정량,2,4-적화멸초송재3.0-100.0μg/L범위내선성관계량호,상관계수분별위0.994화0.997。방법검출한（MDL）분별위：1.6μg/L화1.3μg/L。대2개첨가수평진행회수실험,회수솔분별위96.0%-126.6%,상대표준편차（RSD,n=5）재4.9%-13.5%지간。본방법구유회수솔고적우점,괄용우음용수중2,4-적화멸초송적검측수요。
A method for GC-ECD determination of 2,4-D and Bentazone in water by pre-colunm derivation was established.10 mL of water sample was extracted by ethyl acetate,then solvent was removed.The reaction proceed with dichloromethane as solvent,Iodomethane as reactant,Tetrabuty lammonium hydrogen sulfate and sodium hydroxide aq.Solution as catalyst.The reaction mixture was determined by capillary column gas chromatography with electron capture detector（ECD） and quantified by external standard method.The coefficient correlation for 2,4-D and Bentazone were 0.994 and 0.997 in the linear range at 3.0-100.0 μg/L.The method detection limit were 1.6 μg/L and 1.3 μg/L.Overall recovery and repeatability（relative standard deviations,RSD,n=5） ranged from 96.0 % to 126.6 %,and from 4.9 % to 13.5 %,respectively.The method has the advantage of high efficiency.It can be applied to the determination of 2,4-D and Bentazone in drinking water.