土壤中苯肽胺酸的测定及淋溶特性研究

建立了反相条件下超高效液相色谱-串联质谱(UPLC-MS/MS)检测土壤中苯肽胺酸残留量的分析方法,并结合土壤薄层层析试验研究了苯肽胺酸在3种典型土壤(黑土、水稻土和红土)中的淋溶特性。结果表明:添加水平为0.1、1和10 mg/kg时,苯肽胺酸在土壤中的添加回收率为77.3%~99.4%,相对标准偏差(RSD)为1.3%~11.4%;其在3种土壤中的检出限(LOD)均低于1.0μg/kg。苯肽胺酸在吉林黑土中的比移值(Rf)为0.83,其移动性为可移动;在江苏水稻土中的Rf值为0.61,在湖南红土中的Rf值为0.62,移动性均为中等。

Determination and leaching of phthalanilic acid in soil

A method with ultra-performance liquid chromatography/tandem mass spectrometry(UPLC-MS/MS) for determining phthalanilic acid residue in soil was developed. The leaching behavior of phthalanilic acid in three types of typical soil(black soil, rice soil and red soil) was studied by soil thin layer chromatography. The results showed that the method fortified recoveries were between 77.3% and 99.4% with relative standard deviations(RSD) of 1.3%-11.4%.The limits of detection(LOD) could reach 1.0 μg/kg for the three types of soil. The relative flows(Rf) of phthalanilic acid in black soil from Jilin province, rice soil from Jiangsu province and red soil from Hunan province were 0.83, 0.61 and 0.62, respectively. It's found that the migrations of phthalanilic acid in black soil was in mobile grade,while moderate in rice soil and red soil.