Determination of Organic Acids from Integrated System of Soil and Plant

A method of determination of trace level of 10 kinds of organic acids from integrated system of soil and plant was established through experimentation of HPLC instrument,sample preparation under sample transportation and conver-sation at 4～20℃ respectively and recovery trails at different fortification levels,with recoveries,coefficient variations and limit of detection of the method as 74%～92%,≤4.1%,0.2～50μg/kg respectively. Results of the determination of tomato plants and its soil showed that the method could accurately monitor the trace level of 10 kinds of organic acids in the inte-grated system of soil and plant.