Trace metal contents ofTaraxacum officinale (dandelion) as a convenient environmental indicator
Trace metal contents ofTaraxacum officinale (dandelion) as a convenient environmental indicator
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蒲公英（蒲公英）的微量金属含量作为方便的环境指标
DOI：
10.1007/bf01734301
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发表时间：
1991
影响因子：
4.2
通讯作者：
S. Dudka
中科院分区：
文献类型：
--
作者：
A. Kabata;S. Dudka
已知某些维管植物富集微量金属，被认为是大气金属沉积的适当指示物。在用于地球化学研究的植物中，蒲公英（Taraxacum officinale.）便于监测大气/土壤污染。该植物通常出现在不同的生态系统中，在广泛的地理区域内具有相对平行的个体发育阶段。它的叶子和根很容易取样。叶根比的金属浓度在植物生长季节可能表明金属的来源。在波兰的132个站点的植物叶和根中的微量金属显示出较高的浓度，从西南地区的植物相比，从东北地区的国家。然而，仅Cd、Ni和Pb的差异具有统计学显著性（α = 0.05）。金属浓度的几何平均值（mg kg−1，风干重）的含量分别为：Cd 0.85，0.52; Cr 0.99，0.81; Cu 11.2，11.1; Fe 184.4，100.0; Mn 59.7，51.4; Ni 2.1，1.5; Pb 4.4，3.0; Zn分别为49.6、41.3。显着较高浓度的镉，铅，锌被发现在叶的根在西南地区的杂草。这些金属是该国该地区最严重的空气污染物。
Some vascular plants are known to concentrate trace metals and are regarded to be suitable indicators of atmospheric metal deposition. Among plant species used for biogeochemical studies dandelion (Taraxacum officinale.) is convenient for monitoring air/soil pollution. The plant commonly occurs in different ecosystems with relatively parallel stages of ontogenesis over a broad area of geographical regions. Its leaves and roots are easily accessible for sampling. Leaf to root ratios of metal concentrations in dandelion may indicate the source of metals during the growing season. Trace metals in leaves and roots of dandelion from 132 sites in Poland showed higher concentrations in the plants from the SW region compared to those from the NE region of the country. However, the differences were only statistically significant (α = 0.05) for Cd, Ni, and Pb. Geometric means of metal concentrations (mg kg−1, air dried weight) in dandelion leaves of the SW and NE regions were: Cd 0.85, 0.52; Cr 0.99, 0.81; Cu 11.2, 11.1; Fe 184.4, 100.0; Mn 59.7, 51.4; Ni 2.1, 1.5; Pb 4.4, 3.0; and Zn 49.6, 41.3, respectively. Markedly higher concentrations of Cd, Pb, and Zn were found in the leaves of the dandelion over roots in the SW region. These metals are the most serious aerial pollutants in that part of the country.