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Salinity and Heavy Metal Contents of Solar Salts Produced in Jeollanamdo Province of Korea

전라남도 지역에서 생산된 천일염의 염도 및 중금속 함량

  • Lee, Kang-Deok (Dept. of Food Engineering and Solar Salt Biotechnology Research Center) ;
  • Park, Jeong-Wook (Food Industrial Technology Research Center, Mokpo National University) ;
  • Choi, Cha-Ran (Dept. of Food Engineering and Solar Salt Biotechnology Research Center) ;
  • Song, Hyun-Woo (Food Industrial Technology Research Center, Mokpo National University) ;
  • Yun, Su-Kyoung (Food Industrial Technology Research Center, Mokpo National University) ;
  • Yang, Ho-Chul (Jeollanam-do Institute of Health and Environment) ;
  • Ham, Kyung-Sik (Dept. of Food Engineering and Solar Salt Biotechnology Research Center)
  • 이강덕 (목포대학교 식품공학과, 천일염 생명과학연구소) ;
  • 박정욱 (목포대학교 식품산업기술연구센터) ;
  • 최차란 (목포대학교 식품공학과, 천일염 생명과학연구소) ;
  • 송현우 (목포대학교 식품산업기술연구센터) ;
  • 윤수경 (목포대학교 식품산업기술연구센터) ;
  • 양호철 (전남보건환경연구원) ;
  • 함경식 (목포대학교 식품공학과, 천일염 생명과학연구소)
  • Published : 2007.06.30

Abstract

To assess the safety of solar salts of Jeollanamdo province where most of Korean solar salts are produced, 433 samples of solar salts in total were collected and analyzed for their contents of sodium chloride and heavy metals (lead, cadmium, arsenic and mercury). Sodium chloride contents ranged from 80 to 85% in 63% of solar salts analyzed. Lead was not detected in 77% of solar salt samples and showed a value of below the maximum permissible limit (2 ppm) in other samples. Cadmium was not detected in most samples (78%), and the other samples where cadmium was detected showed a value far below the maximum permissible limit (0.5 ppm) except for three ones. Arsenic was detected in only four samples, but their concentrations were far below the permissible limit (0.1 ppm). Mercury was not detected in all samples. There were some differences between producing areas in the levels of sodium chloride and lead of solar salts, but the contents of cadmium, arsenic and mercury did not show significant regional differences. These results clearly indicate that solar salts produced from Jeollanamdo province are safe in the aspects of lead, cadmium, arsenic and mercury contents.

전남지역에서 생산된 천일염의 안전성에 대한 기초자료를 제공하기 위해 전남의 주 생산지에서 생산된 천일염 433 종을 대상으로 NaCl 함량 및 중금속(Pb, Cd, As, Hg) 함량을 조사하였다. NaCl 함량은 대부분 80%대 수준이었으며 전체의 63%의 천일염이 $80{\sim}85%$ 함량을 보여 가장 높은 분포를 나타내었다. Pb은 77%의 시료에서 검출되지 않았고 Pb이 검출된 천일염은 모두 기준치인 2 ppm 이하로 나타났다. Cd은 78%의 시료에서 검출되지 않았으며 3곳을 제외하고는 대부분 기준치 이하로 검출되었다. As는 4종의 시료에서만 검출되었는데 모두 기준치에 못 미치는 0.1 ppm 이하로 나타났고, Hg은 모든 천일염에서 검출되지 않았다. NaCl 함량과 Pb 농도는 지역별로 차이를 보였고 Cd, As, Hg은 지역간에 차이가 나타나지 않았다. 따라서 전남에서 생산된 천일염은 생산 지역 간의 다소의 차이는 있으나 중금속오염에 대하여 안전한 수준인 것으로 평가되었다.

Keywords

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