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Salvia miltiorrhiza bunge(SMB) has been widely used as a traditional Chinese medicine for a long time,and today more and more attention has been paid to the effective components in Chinese traditional medicine,especially to rare earth elements(REEs).14 kinds of REEs in SMB from different areas were analyzed by the methods of ICP-MS.The results showed that the total concentration of REEs(as REO,the same below) ranged from 8.43(as dry weight,the same below) to 37.30 mg/kg,and the concentrations of La,Ce and Nd were higher than 2 mg/kg except Nd in SMB from Beijing.So the total concentration of REEs in SMB was much higher than that in rice,corn and barley,which could be the mechanism of curative effect of SMB on cardiovascular cerebrovascular system,digestive system,respiratory system,countershock and antibiotic.The character of other elements and the content of REEs in soil from different areas should be responsible for the difference,but the allocation mechanism of REEs in SMB should be further studied. 相似文献
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稀土抑菌作用研究 总被引:3,自引:7,他引:3
采用抑菌圈法研究了14种稀土离子对2种植物细菌和4种植物真菌的抑菌作用,稀土离子设5个浓度分别为:500mg·L-1、1000mg·L-1、2000mg·L-1、2500mg·L-1和3000mg·L-1.实验结果表明,稀土离子的抑菌作用随浓度的增加而增强,稀土离子的抑菌作用具有选择性,不同的稀土离子对同一种真菌的抑菌作用差异较大;同一种稀土离子对2种细菌的抑菌作用差异也较大.镧对玉米大斑菌、铕对小麦赤霉菌、铽对小麦根腐菌、镝对番茄灰霉菌、钬对玉米大斑菌、铥对小麦赤霉菌、镱对番茄灰霉菌和玉米大斑菌、钇对番茄灰霉菌及14种稀土离子对油菜黑腐菌具有较好的抑菌作用. 相似文献
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Nanomaterialshavebacteriostaticandbacterici dalactivityonplant[1,2 ] .Rareearthmaterialsnoton lypossessbacteriostaticandbactericidalactivity ,butalsohavetheactionofnutrientbearerandactasnu trientregulator[3] .Becausetheparticlesizeandho mogeneityofmaterialshavenotbeenrequiredexactly ,nanorareearthmaterialwhichisfrom 1nmto 10 0nmforbiologyapplicationisalsopreparedbyamethodhomogeneousprecipitant[4 ,5] .Currently ,generalpre cipitatorsaremostlyammonia ,urea ,oxalicacidandammoniumbicarbonateaswell… 相似文献
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离子吸附型稀土矿富含宝贵的中重稀土战略资源,工业开采过程产生的氨氮污染问题长期备受关注。分别以硫酸镁、氯化钙和硫酸铵柱浸模拟离子吸附型稀土矿浸取尾矿,以中黄13大豆为供试作物,开展了室外盆栽试验,探究其对离子吸附型稀土矿区土壤的生态影响。结果表明,与采用铵浸尾矿种植相比,采用镁浸或钙浸尾矿种植的豆苗株高相当或更高,叶片的叶绿素含量更高或相当,根系生长正常,主根明显,侧根茂盛,且地径明显更粗,这可能与镁、钙等能直接参与叶绿素合成、加速糖分运输、改善土壤板结等有关。与采用硫酸铵浸取剂浸矿相比,采用硫酸镁、氯化钙浸取剂浸矿对离子吸附型稀土矿区土壤的生态影响更小,这也为离子吸附型稀土矿绿色开采和浸矿场地污染防治指明了发展方向。 相似文献
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