Standards Development

Scope

This standard describes the method of measuring 185nm/254nm output of the dual-band ultraviolet lamp in a simulated practical application.

Purpose

It was reported in a report issued in the 2nd United Nations Conference on Environment and Development on May 23, 2016 that the annual quantity of premature death due to environmental deterioration is 234 times more than the quantity of death due to conflict in the globe and over a quarter of children who are less than five years old died from environmental factors. Around 12.6 million people died from environmental causes in 2012 accounting for 23% of total death toll. The above have adequately demonstrated significance of maintaining a healthy environment. It is a basic human right to breathe clean air. In addition, it is the goal of “The 2030 Agenda for Sustainable Development” to allow all people to live in a healthy environment with equality and dignity. Voltaic organic Compounds (hereinafter refer to as VOCs) refers to a general term of a kind of organic compounds. The pollution range and influence of VOCs are very wide because of its diversity of physicochemical properties. Harms of VOCs on human beings mainly include two points: on one hand, its harmful ingredients will directly affect human health; on the other hand, VOCs will form PM 2,5 to indirectly affect human health. Increasingly severe VOCs emission has become a hot topic of environmental protection of many countries in the world. It is vital significant to obtain anticipated UV output at 185 nm and 254 nm from a dual-wavelength UV lamp for ideal VOCs removal performance. The unique advantage for removing VOCs from exhaust can be achieved when dual-wavelength UV (185 nm, 254 nm) work together. Dual-wavelength UV lamps have been widely applied for different application fields.

It is necessary to measure output of both the wavelength UV (185nm, 254nm) at the same time.