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물환경 체험 및 탐구 활동에서 수질오염지표로서 전기전도도(EC) 혹은 총용존고형물질(TDS)의 활용에 대한 고찰
안삼영,Ahn, Samyoung 한국환경과학회 2022 한국환경과학회지 Vol.31 No.4
Electrical Conductivity (EC) or Total Dissolved Solids (TDS) has been often used to evaluate the water quality in some water education program for children and youth. This study attempted to find out whether EC (or TDS) can be used as a water pollution criteria in water education program. To clarify it, we used the water analysis data of July 2019 and January 2020 from Water Environment Information System. Data from 332 points in Han-river were used to investigate correlation between the parameters, such as BOD, COD, TN, TP vs EC. Correlation(r) for all data of BOD vs. EC was 0.347 for July 2019 and 0.483 for January 2020. No correlation was observed for BOD Ia and BOD Ib for July 2019 (r=-0.041, -0.030, respectively) and BOD Ia for January 2020 (r=0.041). Better correlation for all data of COD vs. EC was obtained (r=0.543 for July 2019 and r=0.610 for January 2020). However, no correlation was observed for COD Ia for January 2020. High vlaue of EC or TDS does not always mean water pollution, especially for clean water environment. Thus, EC (or TDS) alone can not be used as a water pollution criteria.
환경 친화적 학용품 사용에 관한 초등학생의 인식조사 및 환경교육프로그램의 개발
안삼영,김대희,김도희,김정렬,조계정 한국환경교육학회 2006 環境 敎育 Vol.19 No.2
School is an excellent place for children to learn environment-conscious behavior and for teachers to bring up environmental education. School has a plenty of teaching materials such as school building, pond, school forest, waste and school supplies. Especially, the environmental education for and with school supplies can be very effective, as it is mostly the first products for children to learn the buying and consumption in their daily life.In this study we conducted a survey on the environmental attitude of two groups of 5th graders towards environmentally friendly school supplies. The experimental group received environmental education on school supplies and the control group did not. The survey results showed that almost 50% of the children did not consider the environmental impact, but rather the price, design and function when buying the school supplies. However, more than 70% of children were willing to use the recycled school products, implying that they are aware of environmental issues and want to contribute to the