Usutani S, Nishiyama K, Sato I, Matsuura K, Sawada Y, Hosokawa Y, Izumi S
Sangyo Igaku. 1979 Jan;21(1):11-20. doi: 10.1539/joh1959.21.11.
An investigation of the environment of the working place was made as part of the investigation of damages to health that had broken out in a certain vanadium refinery; and the following conclusions were obtained: When the atmospheric dust volume and V2O5 concentration by unit working step were measured with a high volume air sampler, V2O5 exceeded the threshold limit value given by ACGIH in the P.O. flake production step, while the measurement of V2O5 concentration during one-shift working hours with a low volume air sampler gave 64.3 micrograms/m3 even in the grinding step where the maximum concentration was found, and values under 10 micrograms/m3 in all the other steps. Such concentrations may be considered to have been derived from the fact that P.O. casting in accomplished in a short time, and that the fume and dust that are transiently produced at high concentrations are dispersed outdoors by spontaneous ventilation. Damages to health such as a high prevalence of green tongue appeared to have resulted from failure in exercising elementary sanitary care such as imperfect facilities for safety and sanitation, and failure to thoroughly enforce wearing of masks.
作为对某钒精炼厂爆发的健康损害调查的一部分，对工作场所的环境进行了调查，得出以下结论：当使用大容量空气采样器按单位工作步骤测量大气粉尘量和五氧化二钒浓度时，在偏钒酸铵片状物生产步骤中五氧化二钒超过了美国政府工业卫生学家会议（ACGIH）给出的阈限值，而使用小容量空气采样器在一班工作时间内测量五氧化二钒浓度时，即使在发现最大浓度的研磨步骤中也仅为64.3微克/立方米，在所有其他步骤中均低于10微克/立方米。这样的浓度可能是由于偏钒酸铵浇铸在短时间内完成，以及高浓度瞬间产生的烟尘通过自然通风分散到室外这一事实所致。诸如绿舌高发等健康损害似乎是由于未能实施基本的卫生保健措施，如安全和卫生设施不完善，以及未能彻底执行戴口罩规定。
