激光测定室内空气中可吸入颗粒物检验标准方法的研究

徐业林 张怀玲 江嘉林 张建鹏 赵淑雅 2005-12-13 13:00:58 中华医药杂志 2004年9月第4卷第9期

　　【摘要】 目的 通过调研确定激光法作为室内空气中可吸入颗粒物检验标准方法。方法 采用激光法进行实验研究与现场监测相结合的方法并同步与经典称重法进行比较。结果该方法2项实验结果相对标准差分别为5.45%、3.54%;采用美国NIOSH标准规定的方法三地实验结果计算该方法总准确度分别为18.80%、23.00%、21.22%;同称重法比较，两法差异无显著性（P>0.05）;结果表明激光法等效于称重法。结论 该方法可用于室内空气中可吸入颗粒物质量浓度的测定。 

　　关键词 可吸入颗粒物 激光法 称重法

　　Study on the stardard method of laser method analysis of  inhaling particles in the room-air  

　　Xu Yeling，Zhang Huailing，Jiang Jialin，et al.

　　An’hui Provinical Center for Preventing and Controlling Diseases，An’hui230061.

　　【Abstract】 Objective To develop stardard method of laser method analysis of inhaling partides in the room-air.Methods Laser method was combined with on-site monistoring，its results mere compared with ones of insituˉtional weighting method.Results The relative standard deviations of two experiment reults by laser method were5.45%，3.54%respectively.By calculating with US NIOSH criterion，total exactness of this method by these experiˉment results are18.80%，23.00%，21.22%respectively.Compared with weighting method there is no statistical sigˉnificance between these two methods（P>0.05）.These show that laser method head equals to weighting method in terms of efficacy.Conclusion Laser method is suitable to aralysis of inhaling partides in the room-air.

　　Key words inhaling partides laaser method weighting method  

　　1 仪器与方法

　　1.1 测定原理 使一定体积的空气进入激光测量区，空气中的颗粒物在激光照射下产生散射光，通过光电转换器使颗粒物信号转换成相应的电信号，测量颗粒物电信号，并经过数学模型转换，得出颗粒物质量浓度。