Total petroleum hydrocarbon에 의한 작물의 발아 및 유근생장 저해

Abstract

BACKGROUND: Total petroleum hydrocarbons (TPH),which are main materials of soil contamination by oil, are aterm used for any mixture of hydrocarbons. Korea Ministryof Environment established the maximum permissible levelof TPH in farmland by 500 mg/kg, and reported that theTPH level of soil in 266 installation such as gas station,transport company, and military unit ranged from 1,356 to55,117 mg/kg and were much higher than the maximumpermissible level in 2011. METHODS AND RESULTS: To determine the effect ofTPH on crops, we investigated the effect of gasoline,kerosene, and diesel on the germination and radicle growthof mainly consumed crops. The germination rates of controlin investigated all crops ranged from 80.0-100%. Thegermination and radicle growth in majority of investigatedcrops were not inhibited even at 2,500 mg/L. However,germination in onion, leek, and green perilla and radiclegrowth in leek, rape, tomato, and green perilla weresignificantly inhibited by increasing concentrations ofgasoline, kerosene and diesel treatment. Germination andradicle growth inhibition of green perilla by kerosene anddiesel were the highest, the percent inhibition at the 500mg/L were 100 and 98.6%, 100 and 88.2%, respectively. 50% inhibition of germination in green perilla by keroseneand diesel were 39.96 and 29.87 mg/L, and 50% inhibitionof radicle growth were 52.76 and 177.96 mg/L,respectively. Conclusion(s): These results suggest the possibility that themaximum permissible level of TPH might to be establishedgeneral level with exception by crops.