This study was carried out to investigate the residual sulfur dioxide residues (SO2) in commercial medicinal herbs in Korea in 2013. Among a total of 116 samples of 11 different kinds of herbs, 71 samples (11 Kinds) were domestic, and 45 samples (10 Kinds) were imported. The residual contents of SO2 in the samples were determinated by a modified Monier-Williams method. Of the 116 samples, 6 samples (5.2%, 4 Kinds) failed to meet the regulations for sulfur dioxide residues of KFDA in medicinal herbs. Among 6 unsuitable samples, 1 samples (1.4%) were domestic, and 5 samples (11.1%, 3 Kinds) were imported. The highest amount of sulfur dioxide residues was 1546.3 mg/kg (Lycii Fructus) in the domestic samples. Regardless of region, SO2 contents were not found at Anemarrhenae Rhizoma, Citri Unshius Pericarpium, Eucommiae Cortex, Forsythiae Fructus, Gardeniae Fructus, Leonuri Herba and Lonicerae Folium et caulis. These data will be used as a basic data for the future legislation on the regulation and control of sulfur dioxide of herbal medicines.

ABSTRACT
 재료 및 방법
  재료
  시약 및 기기
  실험방법
  회수율
  통계처리
 결과 및 고찰
  원산지 및 품목별 이산화황 잔류량
  이산화황 검출량 백분율과 허용기준 초과실태
 요 약
 참고문헌

• 이아름(한국한의학연구원 한약자원그룹) | Ah Reum Lee (Herbal Medicine Resources Group, Korea Institute of Oriental Medicine)
• 장 설(한국한의학연구원 한약자원그룹) | Seol Jang (Herbal Medicine Resources Group, Korea Institute of Oriental Medicine)
• 이아영(한국한의학연구원 한약자원그룹) | A Yeong Lee (Herbal Medicine Resources Group, Korea Institute of Oriental Medicine)
• 최고야(한국한의학연구원 한약자원그룹) | Goya Choi (Herbal Medicine Resources Group, Korea Institute of Oriental Medicine)
• 김호경(한국한의학연구원 한약자원그룹) | Ho Kyoung Kim (Herbal Medicine Resources Group, Korea Institute of Oriental Medicine) Correspondence to