单位质量的物质所吸收的电离辐射能量,被称为吸收剂量,单位是戈瑞(Gy),1戈瑞=1焦耳/千克。空气吸收剂量率是一种可直接、快速、连续反映环境辐射水平的测量指标,是环境辐射监测的一个重要组成部分,单位为戈瑞/小时(Gy/h)。戈瑞是个很大的单位,实际应用中常用的是微戈瑞(1戈瑞的百万分之一)和纳戈瑞(1戈瑞的十亿分之一)。我国空气吸收剂量率监测,包括96个地级及以上城市、133个辐射环境自动监测站的空气吸收剂量率在线连续监测,以及230个地级及以上城市的累积剂量监测。 The amount of ionizing radiation energy absorbed by a unit mass of substance, called the absorbed dose, is given in Gy and 1 Gy = 1 joule per kilogram. Air dose rate is a direct, rapid and continuous measurement of environmental radiation levels, which is an important part of environmental radiation monitoring. Its unit is Gy / h. Gary is a large unit, commonly used in practical applications is the micro-Ge Rui (one millionth of a gry) and Nagori (one billionth of a gry). China’s air dose rate monitoring, including 96 prefecture level and above cities, 133 automatic radiation environment monitoring stations on-line continuous monitoring of air dose rates, and 230 prefecture level and above cities in the cumulative dose monitoring.