An analytical method is proposed to determine trace heavy metals chromium, nickel, mercury, arsenic, and lead in tipping paper and As and Pb in cigarette filters using monochromatic wavelength X-ray fluorescence spectrometry. It is very difficult to determine trace heavy metals by traditional energy-dispersive X-ray fluorescence spectrometry because of its high noise and low peak area. A MWXRF spectrometer was assembled with a LiF(4 2 0) double curved crystal and microfocal X-ray tube. High count X-ray was simultaneously generated and focused by LiF(4 2 0) DCC. With pressing pretreatment, the signal to background ratio was significantly improved. There was a good linear relation between the intensity by MWXRF and heavy metal content by ICP-MS and AAS. The limits of detection of the heavy elements were lower than 1.0 μg/g. A batch of cigarette tipping papers and filters were analyzed, there were only few heavy metals with low contents in the tipping paper and filters.

提出了一种使用单色波长 X 射线荧光光谱法测定水松纸中痕量重金属铬、镍、汞、砷和铅以及香烟过滤嘴中的砷和铅的分析方法。传统的能量色散X射线荧光光谱法由于其高噪声和低峰面积，很难测定痕量重金属。MWXRF光谱仪由LiF(4  2  0)双曲面晶体和微焦X射线管组装而成。LiF(4  2 0) DCC。通过压制预处理，信噪比显着提高。MWXRF 的强度与 ICP-MS 和 AAS 的重金属含量之间存在良好的线性关系。重元素检出限低于1.0 μg/g。对一批卷烟水松纸和过滤嘴进行分析，发现水松纸和过滤嘴中重金属含量极低。