루미놀 화학발광
C8H7N3O2 + H2O2 → 3-aminophthalate + N2 + hν (blue light)
개요
Luminol reacts with hydrogen peroxide in the presence of a catalyst (typically iron from hemoglobin in blood) to produce 3-aminophthalate in an excited electronic state. As the molecule relaxes, it emits blue light (425 nm). The iron in blood catalyzes this reaction, making it a powerful forensic tool.
참여 물질
| 역할 | 물질 | 계수 | 상태 |
|---|---|---|---|
| 반응물 | 과산화수소 H₂O₂ | 1 | (aq) |
일상 속 예시
Crime scene investigators spray luminol solutions in dark rooms to detect invisible bloodstains that glow blue.
산업적 중요성
법의학에서 희석된 혈흔(헤모글로빈의 철 이온 촉매)을 검출하는 혈흔 감별 시약으로 사용됩니다. 생의학 분야의 화학발광 면역 분석(CLIA)에도 활용됩니다.
성질
- 유형
- 광화학
- 가역 반응
- 아니오
- 에너지
- 발열
- ΔH
- -300.0 kJ/mol
- 촉매
- Fe²⁺ (from hemoglobin)
자주 묻는 질문
What is the equation for 루미놀 화학발광?
The balanced equation is: C₈H₇N₃O₂ + H₂O₂ → 3-aminophthalate + N₂ + hν (blue light).
What type of reaction is 루미놀 화학발광?
루미놀 화학발광 is a 광화학 reaction.
Is 루미놀 화학발광 exothermic or endothermic?
루미놀 화학발광 is exothermic (releases energy). The enthalpy change (ΔH) is -300.0 kJ/mol.
What conditions are needed for 루미놀 화학발광?
This reaction requires a catalyst (Fe²⁺ (from hemoglobin)).