Mercury Thermometer Advantages:
Mercury thermometers are affordable, and their greatest advantage lies in their accuracy. The outer wall of a mercury thermometer has刻度,每个刻度代表0.1℃,对外部体温的变化非常灵敏,一旦体温出现细微变化都会呈现,水银温度计不仅能够准确测量体温,而且性能比较稳定。
A standard mercury thermometer used daily typically contains about 1g of mercury. If it breaks and all the mercury vaporizes, it can raise the mercury concentration in a room of 15 square meters and 3 meters high to 22.2 mg/m³;而我国环境空气质量标准规定,汞蒸汽浓度的安全限值为50ng/m³。In a short period, inhaling high concentrations of mercury vapor (greater than 1.0 mg/m³) can lead to acute mercury poisoning,表现为头晕、头痛、乏力、发热等。