| 보유기관명 |
동아대학교 |
| 보유기관코드 |
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| 활용범위 |
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| 활용상태 |
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| 표준코드 |
B516 |
| 표준분류명 |
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| 시설장비 설명 |
Atomic absorption spectroscopy (AAS) is a spectroanalytical procedure for the quantitative determination of chemical elements employing the absorption of optical radiation (light) by free atoms in the gaseous state. In analytical chemistry the technique is used for determining the concentration of a particular element (the analyte) in a sample to be analyzed. AAS can be used to determine over 70 different elements in solution or directly in solid samples. The technique makes use of absorption spectrometry to assess the concentration of an analyte in a sample. It requires standards with known analyte content to establish the relation between the measured absorbance and the analyte concentration and relies therefore on the Beer-Lambert Law. In short the electrons of the atoms in the atomizer can be promoted to higher orbitals (excited state) for a short period of time (nanoseconds) by absorbing a defined quantity of energy (radiation of a given wavelength). This amount of energy i.e. wavelength is specific to a particular electron transition in a particular element. In general each wavelength corresponds to only one element and the width of an absorption line is only of the order of a few picometers (pm) which gives the technique its elemental selectivity. The radiation flux without a sample and with a sample in the atomizer is measured using a detector and the ratio between the two values (the absorbance) is converted to analyte concentration or mass using the Beer-Lambert Law.
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| 장비이미지코드 |
http://nfec.ntis.go.kr/storage/images/equip/photo/201205/.thumb/20120529132243.JPG |
| 장비위치주소 |
부산 사하구 하단2동 동아대학교 840 공대 2호관 p2503 |
| NFEC 등록번호 |
NFEC-2012-05-163499 |
| 예약방법 |
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| 카타로그 URL |
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| 메뉴얼 URL |
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| 원문 URL |
http://www.zeus.go.kr/equip/read?equipId=Z-NTIS-0033114 |
| 첨부파일 |
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