CAJ | 학술논문

建立了采用一体化固相萃取提取和净化、GC－MS／GC－ECD联合定性定量同时检测水中14种有机氯农药的方法，优化了固相萃取和色谱条件。样品于一体化固相萃取仪上以10 mL／min流速经C18柱富集、6 mL体积比为1∶1的二氯甲烷／乙酸乙酯混合溶剂洗脱、氮吹浓缩后，GC－MS／GC－ECD分离检测。结果表明，14种OCPs在1．00～500μg／L范围内线性良好，方法检出限为1．76～15．10ng／L，平均加标回收率为69．6％～102．8％，RSD为1．62％～18．9％。实际样品分析表明该方法灵敏度和精密度高、准确性好、操作简便，适用于大批量水样中微量和痕量OCPs的测定。
건립료채용일체화고상췌취제취화정화、GC－MS／GC－ECD연합정성정량동시검측수중14충유궤록농약적방법，우화료고상췌취화색보조건。양품우일체화고상췌취의상이10 mL／min류속경C18주부집、6 mL체적비위1∶1적이록갑완／을산을지혼합용제세탈、담취농축후，GC－MS／GC－ECD분리검측。결과표명，14충OCPs재1．00～500μg／L범위내선성량호，방법검출한위1．76～15．10ng／L，평균가표회수솔위69．6％～102．8％，RSD위1．62％～18．9％。실제양품분석표명해방법령민도화정밀도고、준학성호、조작간편，괄용우대비량수양중미량화흔량OCPs적측정。
We developed an integrated method that combined solid -phase extraction and purification, GC -MS/GC -ECD for qualitative and quantitative determining 14 organochlorine pesticides in water. The solid -phase extraction and chromatography condition were optimized. The sample was extracted on the integrated method with 10 mL/min velocity by C18 column enrichment, eluted by 6 mL mixed solution of dichloromethane/ethyl acetate with the volume ratit of 1∶1 and concentrated by nitrogen, and was separated and detected by GC-MS/GC-ECD. The results indicate that 14 OCPs show a good linearity in the range of 1. 00~500μg/L. The detection limit was 1. 76~15. 10 ng/L, the average recovery was 69. 6% ~102. 8%, RSD was 1. 62% ~18. 9%. The analysis of actual samples demonstrate that this method shows high sensitivity and precision, good accuracy, simple operation, and suitable for determination of trace and ultra-trace OCPs in water samples.