• 동위원소뉴스
• /
• no.4 s.100
• /
• pp.1-3
• /
• 2005

• Radioisotope journal
• /
• v.5 no.2
• /
• pp.4-11
• /
• 1990

• Radioisotope journal
• /
• v.5 no.4
• /
• pp.20-27
• /
• 1990

• Radioisotope journal
• /
• v.20 no.2
• /
• pp.90-95
• /
• 2005

• 동위원소뉴스
• /
• no.2 s.62
• /
• pp.5-8
• /
• 2002

• 동위원소뉴스
• /
• no.11 s.59
• /
• pp.5-8
• /
• 2001

• 동위원소뉴스
• /
• no.5 s.5
• /
• pp.1-2
• /
• 1997

이달 2일 한국원자력안전기술원 시험관리실은 "제47회 RI취급자일반면허시험"의 합격자 125명을 발표하였다.(12쪽 참조) 이번 시험에 총 1,843명 응시에 125명이 합격함으로 합격률은 6.78%로 '96년 306명에 비해 합격률이 저조하며 작년부터 시행된 실무교육에 대하여 설명하고자 한다.

• Analytical Science and Technology
• /
• v.7 no.3
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• pp.277-284
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• 1994

The spectrophotometric determination of rare earth elements with XO was investigated in the presence of cetylpyridium chloride(CPC), dodecyltrimethylammonium bromide(DTMAB), cetyltrimetylammonium bromide (CTMAB), Triton X-100 at pH 6.2. The complex between XO and rare earth elements in the presence of cationic surfactants was very stable and more sensitive than in the absence of surfactants. The largest absorbance increase was provided by CTMAB, which was therefore chosen for determination of rare earth elements. REE-XO-CTMAB complex has absorption maxima at 618nm and obeys the Beer's law in the range of 0~0.5 ppm. Molar absorptivity was $1.5{\times}10^5mol^{-1}cm^{-1}l$.

• The Science & Technology
• /
• v.8 no.8 s.75
• /
• pp.10-12
• /
• 1975

학술원주최 광복30주년을 기념하는 종합학술회의가 8월11일부터 8월20일까지 (10일간)무역회관(서울 중구 회현동)에서 개최되었다. 국내외 저명학자들이 참가한 이번 종합학술회의는 인문과학부와 자연과학부로 구분진행되었고 자연과학부는 5개분과로 분류하였다. 제1분과는 과학교육을 중심으로 토론하고 제2분과는 생물학 및 지리학을 제3분과는 자원에너지를 다루고 제4분과는 장기이식과 면역,제5분과는 미량원소에 관한 심포지움을 각각 갖었다. 8월11일 오후 5시 개회식에 이어 개최된 심포지움 연제와 연사는 다음과 같다.

• Journal of the Korean Chemical Society
• /
• v.37 no.5
• /
• pp.496-502
• /
• 1993

Spectrophotometric determination of rare earth elements with MTB and the composition ratio were investigated in the presence of surfactants of cetylpyridinium chloride (CPC), Triton X-100, dodecyltrimethylammonium bromide (DTMAB) and cetyltrimethylammonium bromide (CTMAB) at pH 6.5. The colour development between MTB and rare earths in the presence of cationic surfactants was very stable and more sensitive than that in the absence of surfactants. The largest absorbance increase was provided by CPC, which was therefore chosen for determination of rare earth elements. REE-MTB-CPC complex has absorption maxima at 650 nm and obeys the Beer's law in the range of 0∼100 ng/ml. Molar absorptivity is $6.6{\sim}9.4{\times}10^4\;mol^{-1}l\;cm^{-1}$.