Environmental Analysis Health and Toxicology
- Volume 2 Issue 1_2
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- Pages.13-16
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- 1987
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- 2671-9525(eISSN)
Toxicological Studies on the Humic acid
Humic acid의 독성학적 연구
Abstract
The author obtained three kinds of humic acid from the soil of suburbs in the Wonju city, sediments of Wonju stream and Maeji reservoir in 29 April 1986. The yield of each humic acid was 7.23 g, 3.35 g and 4.61 g per sample 200 g. In the physicochemical characters, the COD varied from 65.9 ppm to 54.9 ppm and BOD showed 6.7~15.9 ppm, but the standard humic acid was COD 58.9 ppm and BOD 6.5 ppm in 0.01 % solution. Doses of the humic acids for 20% methemoglobin formation are as follows; 0.303 mg/m
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