This study was conducted to investigate the timely characteristics of phytoncide in forest trail of Ulsan Metropolitan. Air samples were collected from July to October 2011. The phytoncide were detected and quantified using a Gas Chromatograph Mass Spectrometer(GC/MSD). This study are summarized as follows ; The highest levels of phytoncide concentration of August is higher than other months in Munsu Mt. and Samho Mt.(town mountains). The higher phytoncide emission rates found in the morning and in the evening. The concentration of phytoncide was understanded to be greatly influenced by environment change of day time.

Abstract
 1. 서 론
 2. 재료 및 방법
  2.1. 조사대상 지점 및 조사 항목
  2.2. 시료포집 및 분석
 3. 결과 및 고찰
  3.1. 조사 지점에 따른 피톤치드 월 평균 농도
  3.2. 피톤치드의 시 변화특성
  3.3. 일 중 온도 변화에 따른 피톤치드 발생특성
 4. 결 론
 참 고 문 헌

• 박흥재(인제대학교 환경공학부) | Heung Jai Park (Department of Environmental Engineering, Inje University) Corresponding author
• 정성욱(인제대학교 환경공학부) | Seong Wook Jeong (Department of Environmental Engineering, Inje University)
• 변기영(인제대학교 환경공학부) | Ki Yeong Byeon (Department of Environmental Engineering, Inje University)
• 이현희(인제대학교 환경공학부) | Hyun Hee Lee (Department of Environmental Engineering, Inje University)
• 최승훈(인제대학교 환경공학부) | Seung Hoon Choi (Department of Environmental Engineering, Inje University)
• 손지민(인제대학교 환경공학부) | Ji Min Son (Department of Environmental Engineering, Inje University)
• 유봉관(울산광역시보건환경연구원) | Bong Gwan Yu (Ulsan Institute of Health and Environment)
• 박선호(울산광역시보건환경연구원) | Sun Ho Park (Ulsan Institute of Health and Environment)
• 이진열(울산광역시보건환경연구원) | Jin Yeol Lee (Ulsan Institute of Health and Environment)
• 함유식(울산광역시보건환경연구원) | Yoo Sik Hahm (Ulsan Institute of Health and Environment)
• 이미림(호남대학교 치위생학과) | Mi Lim Lee (Department of Dental Hygiene, Honam University)