Flos Sophorae and Fructus Sophorae are two kinds of traditional Chinese medicines. In this work, the two kinds of traditional Chinese medicines collected from eleven areas of Dezhou, were analyzed by inductively coupl...Flos Sophorae and Fructus Sophorae are two kinds of traditional Chinese medicines. In this work, the two kinds of traditional Chinese medicines collected from eleven areas of Dezhou, were analyzed by inductively couple plasma-mass spectrometry （ICP-MS） to compare the content and distribution of 14 kinds of rare earth elements （REEs）. The method was verified by analyzing GBW07605 certified reference material. The results showed that ICP-MS is an accurate, sensitive and reliable technique for determining REEs in traditional Chinese medicine. There were big differences in contents for REEs in Flos Sophorae and Fmctus Sophorae from different areas. The contents of total REEs in Flos Sophorae samples from different areas ranged from 1.0785 to 2.2659 μg/g, while those in Fmctus Sophorae from 0.6826 to 1.0527 ktg/g. The contents of total REEs in Flos Sophorae samples from different areas were obviously higher than those in Fmctus Sophorae of the same area and there was big difference between various Flos Sophorae samples. Interestingly, the higher the content of total REEs in Flos Sophorae samples, the lower the content of total REEs in Fmctus Sophorae samples of the same area. The plots of normalized element concentration versus atomic number showed some characteristic distribution trends. The distribution trend of light REEs （La-Gd） was relatively fiat except a positive Eu anomaly, however, that was steep and discrepant for heavy REEs （Tb-Lu）. The results could provide a valuable reference for understanding the relationship between the curative mechanism, pharmacology characteristics and their geological condition for the two traditional Chinese medicines investigated.展开更多
本文选择赣南亚热带典型地球化学景观区,较系统地研究了稀土元素在景观中的分布,分异特征.结果表明,该区地球化学景观中稀土元素含量较高,其含量分布受母岩性质和表生作用控制.各单元景观中稀土含量不同,水上景观中比残积景观和堆积淋...本文选择赣南亚热带典型地球化学景观区,较系统地研究了稀土元素在景观中的分布,分异特征.结果表明,该区地球化学景观中稀土元素含量较高,其含量分布受母岩性质和表生作用控制.各单元景观中稀土含量不同,水上景观中比残积景观和堆积淋溶景观中明显偏高.在残积景观剖面中,稀土元素具垂直分层现象.地球化学景观中稀土元素的分布模式与母岩相似,具有强烈的 Eu 负异常,但同时发现有轻重稀土的分异和 Ce 异常的特殊地球化学行为.最后,对影响稀土元素分布分异的主要因素作了探讨.展开更多
The Agrobacterium sp.HN1 was isolated from the soil and used to adsorb rare earth ions La3＋ and Ce3＋.The results showed that the pretreatments of Agrobacterium sp.HN1 did not enhance the adsorption of La3＋ and Ce3...The Agrobacterium sp.HN1 was isolated from the soil and used to adsorb rare earth ions La3＋ and Ce3＋.The results showed that the pretreatments of Agrobacterium sp.HN1 did not enhance the adsorption of La3＋ and Ce3＋.The pH,temperature,time and bacterial age affected the dynamics of adsorption of La3＋ and Ce3＋.The optimum adsorption conditions for Agrobacterium sp.HN1 were as follows：15 mg/L La3＋ of initial concentration,10 mg/L Ce3＋,300 mg/L（dry wt.cell） biomass for sorption,6.8 pH,30 oC temperature,150 r/min rotational speed,2 h adsorption time and 28 h bacterial age.The adsorption kinetics of La3＋ and Ce3＋ for Agrobacterium sp.HN1 followed the pseudo-second order equation.展开更多
基金Project supported by the Scientific Project of the Dezhou Government (2006067)the Science Fundation of Shandong Province (Q2008B08)the Key Technologies R&D Programme of Shandong Province (2010GSF10615)
文摘Flos Sophorae and Fructus Sophorae are two kinds of traditional Chinese medicines. In this work, the two kinds of traditional Chinese medicines collected from eleven areas of Dezhou, were analyzed by inductively couple plasma-mass spectrometry （ICP-MS） to compare the content and distribution of 14 kinds of rare earth elements （REEs）. The method was verified by analyzing GBW07605 certified reference material. The results showed that ICP-MS is an accurate, sensitive and reliable technique for determining REEs in traditional Chinese medicine. There were big differences in contents for REEs in Flos Sophorae and Fmctus Sophorae from different areas. The contents of total REEs in Flos Sophorae samples from different areas ranged from 1.0785 to 2.2659 μg/g, while those in Fmctus Sophorae from 0.6826 to 1.0527 ktg/g. The contents of total REEs in Flos Sophorae samples from different areas were obviously higher than those in Fmctus Sophorae of the same area and there was big difference between various Flos Sophorae samples. Interestingly, the higher the content of total REEs in Flos Sophorae samples, the lower the content of total REEs in Fmctus Sophorae samples of the same area. The plots of normalized element concentration versus atomic number showed some characteristic distribution trends. The distribution trend of light REEs （La-Gd） was relatively fiat except a positive Eu anomaly, however, that was steep and discrepant for heavy REEs （Tb-Lu）. The results could provide a valuable reference for understanding the relationship between the curative mechanism, pharmacology characteristics and their geological condition for the two traditional Chinese medicines investigated.
文摘本文选择赣南亚热带典型地球化学景观区,较系统地研究了稀土元素在景观中的分布,分异特征.结果表明,该区地球化学景观中稀土元素含量较高,其含量分布受母岩性质和表生作用控制.各单元景观中稀土含量不同,水上景观中比残积景观和堆积淋溶景观中明显偏高.在残积景观剖面中,稀土元素具垂直分层现象.地球化学景观中稀土元素的分布模式与母岩相似,具有强烈的 Eu 负异常,但同时发现有轻重稀土的分异和 Ce 异常的特殊地球化学行为.最后,对影响稀土元素分布分异的主要因素作了探讨.
基金supported by the Natural Science Research Program of Henan Province,China(2007180025)
文摘The Agrobacterium sp.HN1 was isolated from the soil and used to adsorb rare earth ions La3＋ and Ce3＋.The results showed that the pretreatments of Agrobacterium sp.HN1 did not enhance the adsorption of La3＋ and Ce3＋.The pH,temperature,time and bacterial age affected the dynamics of adsorption of La3＋ and Ce3＋.The optimum adsorption conditions for Agrobacterium sp.HN1 were as follows：15 mg/L La3＋ of initial concentration,10 mg/L Ce3＋,300 mg/L（dry wt.cell） biomass for sorption,6.8 pH,30 oC temperature,150 r/min rotational speed,2 h adsorption time and 28 h bacterial age.The adsorption kinetics of La3＋ and Ce3＋ for Agrobacterium sp.HN1 followed the pseudo-second order equation.
