液相色谱质谱法测定绿化带土壤中5种除草剂残留

Determination of five herbicide residues in green belt soil by LC-MS

实验研究建立液相色谱质谱法检测绿化带土壤中微量除草剂(利谷隆、草甘膦、百草枯、氟乐灵、乙草胺)残留的分析方法。利谷隆、草甘膦、百草枯、氟乐灵、乙草胺在0.005~2.5μg·mL^(-1)浓度范围内线性关系良好,加标回收率范围为87.2%~101.5%;精密度相对标准偏差依次为3.2%、2.1%、2.8%、3.0%和4.1%。实验结果证明,此方法具有灵敏度高、准确度好等特点,适用于绿化带土壤中极微量除草剂残留的检测。

LC-MS was established to detect trace herbicides in green belt soil analysis method for residues of(ricuron,glyphosate,paraquat,trifluralin and acetochlor).The linearity of ricuron,glyphosate,paraquat,trifluralin and acetochlor is good in the concentration range of 0.005~2.5μg·mL^(-1),and the recovery range is 87.2%~101.5%;the relative standard deviation of precision is 3.2%,2.1%,2.8%,3.0%and 4.1%respectively.The experimental results showed that this method is effective.It is suitable for the detection of very trace herbicide residues in green belt soil.