In catalyst, oxygen produced from H202
With sodium hydroxide, luminol Dianion is formed
The oxygen reacts with luminol dianion
This product is very unstable, so decomposes to 5-aminophathalic acid
As the exited state, 5-aminophathalic acid relaxes to ground state
Excess energy is emitted as blue light
Alkaline luminol, H2O2 solution is used on detecting NO2
The presence o
In synthetic luminol process we need luminol’s precursor. That is
5- nitrophthalhydrazide. It is synthesized by the reaction of 3-nitrophthalic acid
with hydrazine. This process is condensation reaction. First, hydrazine(N2H4) is
heated with the 3-nitrophthalic acid. This reaction is most conveniently carried
out in the high-boiling solvent triethylene glycol. To boil off excess water, t
The luminol is activated with an oxidant. Hydrogen peroxide solution and sodium hydroxide is
used as the activator. In the presence of an catalyst, the hydrogen peroxide is decomposed to form
oxygen and water. The iron in potassium ferricyanide is a catalyst for the reaction.
When luminol reacts with the sodium hydroxide, a dianion is formed. The oxygen produced from
the hydrogen peroxi
2. 혈액감정의 여러 가지 원리들
(1)항원항체 반응(antigen-antibody reaction)
항원항체 반응의 종류는 무수히 많으며 생체 내, 시험관 내에서도 일어난다. 항원과 대응되는 항체와의 결합을 통해 일종의 반응이 일어나게 되는데 이 반응을 항원항체 반응 혹은 혈청·면역 반응이라고도 부른다. 이러한
1. 법과학이란?
범죄가 발생하면 사건현장을 중심으로 초동수사를 한다. 우선 사건현장을 범죄 발생당시 그대로 보존하고 그 안에서 수사에 필요한 모든 증거물을 과학적으로 채취하고 검사한다. 이를 근거로 범행동기와 수법을 추론하고 용의자의 범위를 좁혀 나간다. 이러한 일련의 수사과정이 ‘