基于阳离子型金属有机骨架混合基质膜的分散固相萃取-超高效液相色谱-串联质谱法测定水中7种苯氧羧酸类除草剂

纪雪峰, 李爽, 吴阁格, 赵琳, 马继平

Determination of seven phenoxy acid herbicides in water by dispersive solid phase extraction-ultra performance liquid chromatography-tandem mass spectrometry based on cationic metal-organic framework mixed matrix membrane

JI Xuefeng, LI Shuang, WU Gege, ZHAO Lin, MA Jiping

表2 7种苯氧羧酸类除草剂的线性方程、相关系数、线性范围、检出限和定量限

Table 2 Linear equations, correlation coefficients (r2), linear ranges, LODs and LOQs of the seven phenoxy acid herbicides

Analyte Linear equation r2 Linear range/(μg/L) LOD/(μg/L) LOQ/(μg/L) 4-CPA y=9.63×102x+2.29×103 0.9979 0.001-0.5 0.00013 0.00042 PB y=1.85×102x+9.04×102 0.9981 0.005-0.5 0.00045 0.00150 2,4-D y=7.74×102x+2.69×103 0.9998 0.001-0.5 0.00013 0.00042 MCPA y=1.20×103x+1.44×103 0.9995 0.001-0.5 0.00010 0.00033 2,4,5-T y=9.02×102x+2.87×103 0.9992 0.001-0.5 0.00015 0.00050 2,4-DB y=2.77×102x+4.63×102 0.9999 0.005-0.5 0.00090 0.00300 2,4,5-TP y=7.81×102x-5.87×102 0.9978 0.001-0.5 0.00015 0.00050