For the first time, the active moss biomonitoring technique has been used in Vietnam for investigation of atmospheric elemental contamination in the air of Hanoi region. The Sphagnum girgensohnii moss harvested in the clean area were used to produce the moss-bags. After 2 months of expose in 45 different sites in Hanoi area, the moss samples were prepared and the concentration of 27 heavy metal elements were determined by proton induced X-ray emission at Cyclotron Research Center of Iwate Medical University (Japan). The comparison of the obtained results with those in several cities in Europe shows that Hanoi’s air pollution of heavy metal is much more serious. Based on the values of contamination coefficient, it is shown that Hanoi’s air is extremely polluted by Co; seriously polluted by V and Se; moderately polluted by Cl, Cr, As, Br, Zr, Nb, Mo and Hg; slightly polluted by Mg, Al, Si, K, Ca, Ti, Fe, Cu, Zn, Ga, Rb, Sr, Mo, Ba, W and Pb Statistical analysis has been applied to the original concentration data of the detected elements to find the possible pollution sources.

中文翻译：

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使用质子诱导 X 射线发射的河内大气元素污染的活性苔藓生物监测技术

越南首次使用活性苔藓生物监测技术对河内地区空气中的大气元素污染进行调查。在洁净区收获的Sphagnum girgensohnii 苔藓用于生产苔藓袋。在河内地区的 45 个不同地点暴露 2 个月后，制备苔藓样品并在日本岩手医科大学回旋加速器研究中心通过质子诱导 X 射线发射测定 27 种重金属元素的浓度。将所得结果与欧洲几个城市的结果进行比较，可以看出河内的空气重金属污染要严重得多。从污染系数的值可以看出，河内的空气受到钴的严重污染；V、Se严重污染；受 Cl、Cr、As、Br、Zr、Nb 中度污染，钼和汞；被 Mg、Al、Si、K、Ca、Ti、Fe、Cu、Zn、Ga、Rb、Sr、Mo、Ba、W 和 Pb 轻微污染 对检测元素的原始浓度数据进行统计分析，找出可能的污染源。