http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
한국형 부영양화지수(TSI<sub>KO</sub>)의 인자로서 TOC의 적용성 검토
김범철 ( Bomchul Kim ),공동수 ( Dongsoo Kong ) 한국물환경학회 2019 한국물환경학회지 Vol.35 No.3
Korean Trophic State Index (TSIKO) was developed in 2006, and was composed of COD (COD<sub>Mn</sub> based on permanganate method), Chlorophyll α (Chl.α) and total phosphorus (TP). However, COD<sub>Mn</sub> usually represents only 50-60% of total organic matter in stream or lake water due to low oxidizing power of permanganate. This study investigated the relationship between TOC and COD<sub>Mn</sub> based on the average data for the whole layer in 81 lakes in Korea, during the period 2013-2017. As a result, COD<sub>Mn</sub> was found to be 1.54 times more than TOC in 66 of the freshwater lakes and 3 brackish lakes (TOC measured using thermo-oxidation method). TOC was about a quarter of COD<sub>Mn</sub> in 8 coastal lakes (TOC measured using UV-persulfate oxidation method), and it appeared to be underestimated due to chloride interference. Using the data of 69 lakes with exception of 12 brackish lakes, TSI<sub>KO</sub>(TOC) was developed based on the correlation between TOC and COD<sub>Mn</sub>, while TSI<sub>KO</sub>(COD) was replaced with TSI<sub>KO</sub>(TOC). However, for trophic state assessment of brackish lakes, the TSI<sub>KO</sub>(TOC) can only be utilized in case that TOC is measured through thermo-oxidation method. The determination coefficient of TSI<sub>KO</sub>(Chl) to TSI<sub>KO</sub>(COD) in 66 freshwater lakes and 3 brackish lakes was 0.83, while that to TSI<sub>KO</sub>(TOC) was 0.68. This difference could be attributed to the recalcitrant organic part of TOC.