Université de Toulouse, UPS, INP, EcoLab (Laboratoire Ecologie fonctionnelle et Environnement), ENSAT, Avenue de l'Agrobiopôle, F-31326 Castanet-Tolosan, France.
Chemosphere. 2012 Apr;87(2):204-10. doi: 10.1016/j.chemosphere.2011.12.020. Epub 2012 Jan 4.
Trace metals (TM: Co, Ni, Cu, Zn, Cd, and Pb) as well as Al, Mn, and Fe content was measured in needles of a remote silver fir stand in the south of France. TM localisation and behaviour in needles was evaluated by measuring total and internal content of needles of different ages. Measured concentrations fell within background values. Al, Fe, Co, and Pb were trapped in wax following atmospheric particulate deposition. Contrasting accumulation and migration behaviours of the different elements studied were observed. The wax contained less than 10% Mn, Al, Ni, Co, and Zn and 15-45% Fe, Cu, and Cd in the young needles. Lead was mostly located in the wax (50-80%), and this proportion decreased with needle age. Only the internal content of Pb and Fe increased significantly with needle age. Finally, due to atmospheric deposition accumulation, higher input fluxes of Fe, Cu, Cd, and Pb can be expected in forest soil.
研究测定了法国南部一个偏远银冷杉林分中针叶的痕量金属（TM：Co、Ni、Cu、Zn、Cd 和 Pb）以及 Al、Mn 和 Fe 的含量。通过测量不同年龄针叶的全量和内含量，评估了 TM 在针叶中的定位和行为。所测浓度处于背景值范围内。Al、Fe、Co 和 Pb 在大气颗粒物沉积后被蜡捕获。观察到研究的不同元素的积累和迁移行为存在差异。在幼针叶中，蜡中 Mn、Al、Ni、Co 和 Zn 的含量小于 10%，Fe、Cu 和 Cd 的含量为 15-45%。铅主要存在于蜡中（50-80%），且随着针叶年龄的增加，该比例降低。只有 Pb 和 Fe 的内含量随针叶年龄显著增加。最后，由于大气沉积积累，森林土壤中 Fe、Cu、Cd 和 Pb 的输入通量可能会更高。
