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仪器网/ 行业应用/ 解决方案/ 羽衣甘蓝人工污染的土壤中坨的吸收

羽衣甘蓝人工污染的土壤中坨的吸收

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A pot experiment focused on the study of factors influencingthalliumtransferfromcontaminatedsoilsintokale(green cabbage, Brassica oleracea L. var. acephala, variety Winterbor F1) was evaluated. Threedifferenttypesoftopsoils with naturally low content of thallium (heavy, medium and medium-light soil) were used for pot experiments.
Thesoilswerecontaminatedwiththalliumsulfatetoachievefivelevelsofcontamination(0,0.52,2.10,4.20and 5.88 mg/kg). Thereweresixreplicatesforeachcombination(90potsintheexperiment).Thefirstpartof theexperiment started in the year of contamination (2001) and continued in 2003. Thesoilsamplesandthesamplesofkale (leaves and stalks were sampled separately) were collected and analysed. Kale was found to be able to accumulate
Tl without any influenceonyield.Thehighestthalliumconcentrationwasfoundintheleavesofkaleinthefirstyear of the experiment and reached 326 mg/kg dry matter. Bioaccumulation factor (Biological Absorption Coefficient
BAC) was found to be over 80 during the firstyearoftheexperiment.InthethirdyeartheBACwasaround3 for the soil with the highest pH and the highest organic matter content but as high as 15 for an acid soil with the lowest content of organic matter and the lowest Cation Exchange Capacity (CEC) of soils. 食品蔬菜水果粉碎仪
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