| 灯盏花中重金属元素的化学形态及分布 |
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| 引用本文： | 马莎,杨晓梅,杨光宇. 灯盏花中重金属元素的化学形态及分布[J]. 理化检验(化学分册), 2010, 0(2) |
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| 作者姓名： | 马莎 杨晓梅 杨光宇 |
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| 作者单位： | 云南中医学院中药学院;云南大学化学系; |
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| 基金项目： | 云南省教育厅基金(04Y359C) |
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| 摘 要： | 应用火焰原子吸收光谱法(测定铅、铬、镉)及原子荧光光谱法(测定汞、砷)对灯盏花中重金属的化学形态及其分布进行了研究。0.5g经过预处理的试样用浓硝酸消解并经高氯酸冒烟至近干,用水溶解残盐并定容为25mL。在此溶液中分别用上述两方法测定5种金属元素的总量。分别用5种不同萃取溶剂,即乙醇-水(80+20)混合溶液、亚沸重蒸馏水、1mol·L-1氯化钠溶液、乙酸(2+98)溶液及0.6mol·L-1盐酸溶液,对10g试样进行连续超声萃取。各次所得萃取液分别用硝酸和高氯酸按上述方法处理后测定其中5种金属的含量。文中给出了上述金属元素在各种化学形态中的含量及分布状态,此次结果对评价中草药的生物功能及毒性能有参考价值。
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| 关 键 词： | 化学形态 重金属元素 火焰原子吸收光谱法 原子荧光光谱法 灯盏花 |
Chemical Species and Distribution of Heavy Metal Elements in Erigeron Breviscapus |
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| MA Sha,YANG Xiao-mei,YANG Guang-Yu. Chemical Species and Distribution of Heavy Metal Elements in Erigeron Breviscapus[J]. Physical Testing and Chemical Analysis Part B:Chemical Analgsis, 2010, 0(2) |
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| Authors: | MA Sha YANG Xiao-mei YANG Guang-Yu |
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| Affiliation: | 1.Dept.of Pharmacology of Traditional Chinese Medicines/a>;Yunnan College of Traditional Chinese Medical Science/a>;Kunming 650200/a>;China/a>;2.Dept.of Chemistry/a>;Yunnan University/a>;Kunming 650091/a>;China |
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| Abstract: | FAAS(for determination of Pb,Cr and Cd)and AFS(for determination of Hg and As)were used in the study of chemical species and distribution of the 5 metal elements in the traditional chinese medicine,erigeron breviscapus(EGR-BVCP).0.5 g of the pretreated EGR-BVCP sample was digested with conc.HNO3 and fumed with HClO4 to near dryness.The salts were dissolved and diluted to 25 mL with water,and the solution was used for determination of total amount of the 5 metal elements.For separation of different chemical ... |
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| Keywords: | Chemical species Heavy metals elements FAAS AFS Erigeron breviscapus |
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