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제107회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Stability tests of citric acid with ancient pottery for cleaning inorganic stains

등록일
2011년 2월 24일 17시 03분 20초
접수번호
1710
발표코드
KCS3-5 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
목 15시 : 20분
발표형식
심포지엄
발표분야
Chemistry for Conservation of Cultural Properties
저자 및
공동저자
박대우, 장성윤
국립문화재연구소 복원기술연구실, Korea
This study investigate on the stability of citric acid which used for removal of iron stains on ancient pottery. The elution characteristics of major elements (Si, Al, Fe) and difference of colours on pottery were observed after soaking test with citric acid. Major elements were eluted 0.237ppm to 28.639ppm from the samples of Tangjeon, Asan when soaking with 0.25M citric acid for 130minutes. This elution characteristics increased according to the absorption of samples. The slope of elution is not proportional until the absorption of 12%, but it starts to grow in geometrical progression over 12%. Also the characteristic of elution is related to the firing characteristics of pottery. The ancient pottery with Mullite which was created at high fired progress has absorption under 12% and doesn't appear the characteristic of elution, but over 12% showed distinctly. As color difference(ΔEab*) of pottery is observed under 4, the soaking of citric acid for 130 minutes does not affect on stability of high fired samples. However, it is necessary to be careful on the low fired pottery which have deteriorated surface.

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