UV fluorescent lamp

Ultraviolet fluorescent lamps (also called dark box ultraviolet analyzers) in chemical laboratories are mainly used for thin-layer chromatography

The commonly used adsorbents for thin-plate chromatography are silica gel and alumina.

(1) Working principle

Commercially available ultraviolet fluorescent lamps are actually a kind of low-pressure mercury lamp, which consists of a tube that radiates a certain range of ultraviolet light, two special filters (only 365nm and 254nm ultraviolet light are allowed to pass), a dark box made of black material and observation The window baffle (or transparent plexiglass) constitutes

(2) Safety instructions

Short-wave ultraviolet light is harmful to the human body.

Turn off the UV lamp in time when you are not using it

(3) The harm of ultraviolet light to the human body

According to ISO-DIS-21348, the classification of ultraviolet radiation is shown in Table 22-4

Table 22-4 Classification of ultraviolet radiation

A small amount of natural light's ultraviolet radiation is good for health

Studies have shown that ultraviolet light can cause deoxyribonucleic acid (DNA) damage in the nucleus .

On April 13, 2011, the International Agency for Research on Cancer (IARC), a subsidiary of the World Health Organization, classified all types of ultraviolet radiation as a Class 1 carcinogen, which is one of the highest-level carcinogens recognized

A R&D personnel of a drug R&D company worked continuously for 6 hours without turning off the UV lamp in the biosafety cabinet, causing serious injuries to the face, hands, and eyes.

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