This study was conducted to investigate the effects of intermittent plasma and electrolysis treatments on lettuce (Lactuca sativa var. oak-leaf.), nutrient solution components (NO3- -N, NH4 +-N, PO4 3--P, K+, Ca2+ and Mg2+) and environmental parameters (electrical conductivity, total dissolved solids and pH). The recirculating hydroponic cultivation system consisted of planting port, LED lamp, water reservoir and circulating pump. Nutrient solution was circulated in the following order: reservoir→ filtration-plasma or filtration-electrolysis→ planting port → reservoir. The results showed that nutrient solution components and environmental parameters were changed by plasma or electrolysis treatment. Lettuce growth was not affected by the intermittent plasma or electrolysis treatment with 30 minutes or 90 minutes, respectively. The roots of the lettuce was damaged by excessive plasma and electrolysis treatment. Electrolysis treatment had greater effect on than plasma treatment because of the accumulation of high levels of TRO (Total Residual Oxidants).

Abstract
 1. 서 론
 2. 재료 및 방법
  2.1. 실험방치
  2.2. 양액 성분과 균주
  2.3. 분석 및 측정
 3. 결과 및 고찰
  3.1. 플라즈마 공정과 전기분해 공정의 운전에 의한 
상추의 변화
  3.2. 플라즈마와 전기분해 처리에 따른 EC, TDS 및 pH 변화
  3.3. 플라즈마와 전기분해 처리에 따른 질소, 인 및 양이온 농도 변화
  3.4. 플라즈마와 전기분해 처리에 따른 TRO 농도 변화
 4. 결 론
 REFERENCES

• 김동석(대구가톨릭대학교 환경과학과) | Dong-Seog Kim (Department of Environmental Science, Catholic University of Daegu)
• 박영식(대구대학교 기초교육대학) | Young-Seek Park (DU University College, Daegu University) Corresponding author