Abstract: In the analysis of soil organic pollutants.in west Shenyang, an ordinary compound, α-chloronaphthalene, is used to control analyzing process.There is a close relativity between recoveries of α-chloronaphthalene and other standard compounds. The average recovery rate of α-chloronaphthalene(R)is 85.6%, standard deviation(S)is 9.2 and relative standard deviation is 10.8%. Priority organic pollutants in the soil are anaiysed and R±3S is determined as the high and low limits to control analyzing quality. The results are satisfactory for practical use.

Key words: rice-duck mutual ecosystem, duck sub-system, soil sub-system, N cycling