Landsberger S, Wu D
Department of Nuclear Engineering, University of Illinois, Urbana 61801, USA.
Sci Total Environ. 1995 Dec 1;173-174:323-37. doi: 10.1016/0048-9697(95)04755-7.
The method of instrumental neutron activation analysis (NAA) has been improved for air filter samples in the determination of low level heavy metals in indoor air. By using the techniques of epithermal neutron irradiation in conjunction with Compton suppression, the detection limits of cadmium, arsenic and antimony measurements have been dramatically reduced to 2 ng for Cd, 0.2 ng for As, and 0.03 ng for Sb. The determination of these heavy metals in particulate material generated from cigarette smoking in indoor environments has been conducted. Other elements, Br, Cl, Na, K, Zn were also found at elevated levels.
仪器中子活化分析（NAA）方法已针对空气过滤器样品进行了改进，用于测定室内空气中的低含量重金属。通过结合超热中子辐照技术和康普顿抑制技术，镉、砷和锑测量的检测限已大幅降低，镉为2纳克，砷为0.2纳克，锑为0.03纳克。已对室内环境中吸烟产生的颗粒物中的这些重金属进行了测定。还发现其他元素溴、氯、钠、钾、锌的含量也有所升高。
