同步辐射加速器X荧光分析技术在北极气溶胶研究中的应用

本文应用同步辐射加速器X荧光(SR-XRF)分析技术并结合电感耦合等离子体质谱(ICP-MS)方法对中国首次北极考察采集的气溶胶样品进行了定量分析。SR-XRF方法对6种元素的分辨率分别为1.1ng/cm2(Ca)、39.7ng/cm2(V)、17.6ng/cm2(Fe)、2.3ng/cm2(Ni)、1.8ng/cm2(Zn)、6.4ng/cm2(Pb)。6种元素的浓度分别为117.3(ng/m3,Ca)、16.5(ng/m3,V)、19.3(ng/m3,Fe)、3.4(ng/m3,Ni)、4.5(ng/m3,Zn)、1.4(ng/m3,Pb)。该结果与文献报道的相应海区夏季气溶胶化学成分含量具有可比性。由于SR-XRF方法灵敏度高,属于无损分析,在极地气溶胶研究中具有广泛的应用前景。

THE APPLICATION OF SYNCHROTRON RADIATION X-RAY FLUORESCENCE TO RESEARCH ON ARCTIC AEROSOL

Quantitative analysis of aerosol samples, collected in the marine boundary layer in the Arctic region during the First Chinese Arctic Research Expedition, was performed using synchrotron radiation X-ray fluorescence (SR-XRF) and ICP-MS method. The resolution for six elements using SR-XRF method were 451.2 ng/cm~2 (Ca),195.9 ng/cm~2 (V), 276.2 ng/cm~2 (Fe), 43.4 ng/cm~2 (Ni), 34.2 ng/cm~2 (Zn), 6.4 ng/cm~2 (Pb), respectively. The levels of elements were 117.3(ng/m~3, Ca)、 16.5(ng/m3, V)、 19.3 (ng/m~3, Fe)、3.4(ng/m~3, Ni)、4.5(ng/m~3, Zn)、1.4(ng/m~3, Pb), respectively. The results for these elements were in accordance with the previous report. Based upon the results and the advantage of SR-XRF, which is highly sensitive and non-destructive of sample, this method will be intensively used in the study of aerosols in polar region in the future.