Journal of Food Hygiene and Safety (한국식품위생안전성학회지)

The Korean Society of Food Hygiene and Safety (한국식품위생안전성학회)
권호 표지

Study on White Precipitate in Most of Waters after Thawing

물이 해동한 다음 발생하는 휜 침전물의 정성분석 및 이온의 변화

  • 윤수철 ((주)동원 F&B 식품연구소) ;
  • 박해룡 ((주)동원 F&B 식품연구소) ;
  • 윤형식 ((주)동원 F&B 식품연구소) ;
  • 김창수 (국립환경연구원 수질연구부)
  • Published : 2002.03.01
Download PDF
⟨ Previous Next ⟩

Abstract

The objectives of this study were to investigate the change of silicon, cations and anions dissolved in water before and after thawing, and analyzed what the white-colored precipitate (WP) farmed after thawing was composed of. The silicon concentration that has been changed might have been compared with the weight of WP under water-free state. The major component of WP has been approved to be a silicon, while calsium was only a little contained. As the weight of WP has been nearly equal to the reduced silicon concentration, the weight of its could be changeable calculated by silica (SiO$_2$) molecular weight. Therefore, WP could have been presumed to be a silica. The more silicon concentration was increased, the more weight of silicon was increased. Except for the sample "C", the amounts of cations and anions could be found to be unchangeable nearly. As a result of that, WP has been apparent to be silica itself while most of ions (excluded with Si) of any others were not changed.

Keywords

References

  1. 김용관, 고광배, 하봉석 : 진주시 1원에 산재하는 환경수의 수질, 한수지, 20(2), 126-137 (1987)
  2. 김용관, 고광배 : 동절기에 있어서 낙동강 강수의 영양염류의 변화, 부전대 논문집, 10, 95-105 (1987)
  3. 김용관, 고광배 : 조석에 따른 서 낙동강 강수의 수질 변화, 부전대 논문집, 11, 159-166 (1988)
  4. 최의소, 조광명 : 환경공학, 418-419 (1989)
  5. Lenore S. C., A. E. Greenberg and R. R. Trusell : Standard Metods for the Examination of Water and Wastewater, 15th, 426-427 (1981)
  6. 국립환경연구원 : 수자원환경, 97호, 66-70. (1997)
  7. 김삼수 : 수자원환경, 86호, 80. (1996)
  8. U.S. Environcental Protection Agency: Methods for the Deter-mination of Metals in Envrironmental Samples. Method 300.0. (1991)
  9. Siririks, A., Stillian, J. : J. Chromatogr. 640, 151 (1993) https://doi.org/10.1016/0021-9673(93)80177-A
  10. Bynum, M. I. S. Tyree, W. Weiser: Effect of major ions on the determination of trace ions by ion chromatography, Anal. Chem., 53 (1935)
  11. U.S. Environmental Protection Agency: Method 200.7. Induc- tively coupled plasma-atomic emmion spectrometric method for trace element analysis of water and wastes. Methods for the Determination of Metals in Environmental Samples-Supplement I. EPA 600/R-94-111, (1994)
  12. Garbarino,J. R., H. E. Taylor: Trace Analysis. Recent Developments and Applications of Inductively Coupled Plasma Emi-ssion Spectroscopy to Trace Elemental Analysis of Water, 4, Academic Press, (1985)
  13. Iller, R.K. : The Chemistry of Silica, John Wiley and Sons, New York, N.Y.(1979)
  14. Jenkins, D., Snoeyink, V.L. : Water Chemistry, John Wiley and Sons, New York, N.Y. (1980)
  15. Lerman, S.L, Scheerer, C.C. : The Chemical Behavior of Silica, Ultrapure Water, 5(9), 24-30 (1988)