城市污染土壤中植物组织浓度与土壤铜库的关联
Linking plant tissue concentrations and soil copper pools in urban contaminated soils.
作者信息
Sauvé S, Cook N, Hendershot W H, McBride M B
机构信息
Environmental Chemistry Research Laboratory, Department of Natural Resource Sciences, McGill University, Macdonald Campus, Ste-Anne-de-Bellevue, Québec H9X 3V9, Canada.
出版信息
Environ Pollut. 1996;94(2):153-7. doi: 10.1016/s0269-7491(96)00081-4.
Copper tissue concentrations of radish (Raphanus sativa cv. Cherry Belle), lettuce (Lactuca sativa cv. Buttercrunch) and ryegrass (Lolium perenne cv. Barmultra) grown in a greenhouse in urban contaminated soils are compared to total, soluble and free ion copper pools. The tissue concentrations of copper vary between 8.1 and 82.6 mg Cu kg(-1) dry tissue and the total soil copper content varies between 32 and 640 mg Cu kg(-1) dry soil. The linear regressions with cupric ion activity and total soil copper are both significant (p < 0.01), but cupric ion activity yields a higher level of statistical significance in every case. The results support the hypothesis that free metal in the soil solution is a better indicator of plant metal bioavailability than either total or soluble metal.
将在城市污染土壤的温室中种植的萝卜（Raphanus sativa cv. Cherry Belle）、生菜（Lactuca sativa cv. Buttercrunch）和黑麦草（Lolium perenne cv. Barmultra）的铜组织浓度与总铜、可溶性铜和游离离子铜库进行比较。铜的组织浓度在8.1至82.6毫克铜/千克干组织之间变化，土壤总铜含量在32至640毫克铜/千克干土壤之间变化。与铜离子活性和土壤总铜的线性回归均具有显著性（p < 0.01），但在每种情况下，铜离子活性产生的统计显著性水平更高。结果支持以下假设：土壤溶液中的游离金属比总金属或可溶性金属更能指示植物对金属的生物有效性。
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