野生唐古特大黄矿物元素含量特征

对比青海果洛境内野生唐古特大黄中10种矿物质元素含量特征,用原子吸收光谱法分析了其常量元素K、 Na、 Ca、 Mg 、 P及微量元素Cu、 Zn、 Fe、 Mn、 Al含量。结果表明,唐古特大黄根部与其土壤环境呈现出不同的矿物质元素含量特征,植物中Na、 Ca和P总体表现出富集趋势。矿物质元素含量在不同居群的差异,提示在不同的生境条件下唐古特大黄对矿物质元素采取选择性吸收。     

柴达木唐古特白刺色素中矿物质元素分析

对唐古特白刺色素的矿物质元素进行了分析。结果表明,在色素中Na、K、Ca含量高,这与白刺生长在盐碱地有关;Fe、Zn、Cu、Mn、Se等必需微量元素含量丰富;有害元素含量低。为唐古特白刺色素在食品和饮料中的应用提供了基础数据。     

藏药材白花龙胆花中微量元素的分析

对藏药材白花龙胆花中17种微量元素（Cu、Zn、Fe、Mn、Co、Ni、Se、Cr、Mg、Ca、K、Na、P、As、Hg、Pb、Cd）的含量作了测定。结果表明,白花龙胆花中含有较高的人体必需微量元素和常量元素,其中常量元素K、Ca、Na、Mg和微量元素Zn、Fe、Mn的含量均较高。     

柴达木地区唐古特白刺和西伯利亚白刺中矿物质元素的分析

白刺在传统藏医用药，民间用药中均有广泛用途。利用220FS型原子吸收光谱仪测定了柴达木地区的唐古特白刺和西伯利亚白刺各部位中钾，钠，钙，镁，铜，锌，铁，锰8种矿物质元素。结果表明，两种白刺中矿物质元素含量各民，且因部位不同而异，但又呈现一定的规律性，除锌外，其它元素含量分布大致为叶＞枝＞果皮＞果核＞果汁，锌元素主要分布在枝和果核中。     

ICP-MS快速测定蛤蚧中32种元素

采用微波消解-ICP-MS法测定了蛤蚧中32种常量与微量元素。结果表明,该法检出限为0.003～0.069μg.L1,精密度(RSD)介于1.6%～9.5%,实验回收率为93.5%～106.9%;常量元素中Ca、P、K、Na和Mg含量最高,必需微量元素中Fe、Zn、Se、Cr和Cu含量最高。实验结果为研究蛤蚧功效与元素关系提供了数据支持。     

四种药用香薷植物中多种微量元素分析

对高原香薷、萼果香薷、密花香薷、细穗香薷等四种药用香薷植物中的17种微量元素含量进行了测定和分析。结果表明,4种香薷植物中常量元素以K含量最高,其次为Ca、Mg、Na;必需微量元素中以Cu、Fe、Mn元素的含量为高;非必需微量元素As、Hg、Pb、Cd、Sb含量较低,从重金属元素的角度考虑,使用所测定的4种香薷植物是安全的。     

麒麟菜提取物中的8种无机元素分析

应用原子吸收光谱法分析了麒麟菜提取物中的8种无机元素含量。结果显示,麒麟菜提取物中含有丰富的人体必需无机元素,宏量元素以Na的含量最高,微量元素以Fe的含量最高,8种无机元素中的含量由大到小顺序是:Na,K,Mg,Ca,Fe,Zn,Cu,Mn。     

微波辅助消解ICP-AES法测定小茴香中20种元素

采用微波消解法处理小茴香样品,电感耦合等离子体发射光谱(ICP-AES)测定其中Na、K、Sr、Ca、Mg、P、As、Zn、Pb、Co、Cd、Ni、Ba、Fe、Mn、Cr、Cu、Al、Ti和B 20种常量和微量元素的含量。20种元素的检出限为0.00002~0.00468μg·mL-1,回收率为89.50%~107.89%,相对标准偏差(RSD)均小6%。结果显示,小茴香果实及其嫩叶中除含有人体必需的常量元素K,Na,Ca,Mg,P外,还含有Fe、Zn、Mn、Cr、Co等必需的微量元素和其他元素Ti、B、Ni、Al、Sr、Ba等。     

Comparison of Six Trace Elements Content in Two Genuine Medicines of Notopterygium Incisum and Aconitum pendulum in Qinghai plateau

为研究青海高原道地药材羌活和铁棒锤的特性,采用电热板消解法处理样品,原子吸收分光光度法测定了两种药材中Ca、Mg、Cu、Zn、Fe、Mn 6种金属元素的含量.结果表明,Ca、Mg、Cu、Zn、Fe、Mn 6种微量元素含量在两种道地药材中,含量最高的是Ca,平均值分别为(55.78±12.10) mg/g和(26.48±5.79) mg/g;含量最低的元素为Cu,其值分别为(0.28±0.28)mg/g和(0.09±0.06) mg/g;其它元素含量从高到低依次为Mg,Fe,Zn,Mn.可见不同地区的羌活其微量元素的含量有明显的差异,且羌活微量元素含量也存在种间差异,细叶羌活的Ca、Mg元素含量比宽叶羌活的要低,相反,Fe,Cu,Zn 3种元素含量细叶羌活的比宽叶的要高.     

刺五加不同部位微量元素含量的分析测定

用硝酸、高氯酸混合酸消解样品,采用原子吸收光谱法,测定了刺五加根、茎、叶中Ca、Cu、Mg、Fe、Zn、K、Mn、Na等8种矿物质元素的含量,并对其结果进行了分析比较,以此研究了这几种金属元素在刺五加体内的分布。结果显示,各元素在实验范周内,线性关系良好,加标回收率在99％～109．6％之间,相对标准偏差为0．2％～1．8％;刺五加中不同部位的这8种元素间存在显著差异,根中各元素含量由高到低顺序为Ca,Mg,K,Fe,Na,Mn,Zn,Cu,其叶中的含量以K为高,而且各部位其它元素含量均较高。从微量元素的角度分析,刺五加的根、茎、叶均有一定的应用价值。     

Study on chemical species of inorganic elements in some marine algae by neutron activation analysis combined with chemical and biochemical separation techniques

The compositional changes of inorganic elements on freshwater leaching of 35 species of Chinese algae were studied by the determination of the element contents in marine algae using instrumental neutron activation analysis. It was found that alkali metals and chlorine mainly exist as ions in algae, in which, water-soluble K and Na exist as chlorides. While, other elements exist as the states of both ions and organic combination in which the water leaching ratios of alkaline earth metals are the lowest. The combination of trace elements with various organic macromolecules inSargassum kjellmanianum was also studied using neutron activation analysis combined with chemical and biochemical separation techniques. The results indicate that the concentration of many trace elements, such as Zn, Fe, Sc, Th are earths in protein are quite high, and some trace elements can also be combined by pigment and polyphenol. Alkaline earth metal mainly bind with alginic acid inSargassum kjellmanianum.     

Elemental analysis of brahmi (<Emphasis Type="Italic">Bacopa</Emphasis> <Emphasis Type="Italic">monnieri</Emphasis>) extracts by neutron activation and its bioassay for antioxidant,radio protective and anti-lipid peroxidation activity

Brahmi (Bacopa monnieri) leaves, known as nervine tonic in Ayurveda, and its aqueous (BA), methanolic (BM) and aqueous–methanolic (BAM) extracts were analyzed for 7 minor (Al, Fe, Na, K, Ca, P, Cl) and 18 trace (As, Au, Ba, Br, Co, Cr, Cu, Hf, Hg, La, Mn, Rb, Se, Sm, Sr, Th, V, Zn) elements by INAA. BAM extract showed maximum contents of Na, K, Cl and significant amounts of Mn, Co, Zn. It was also found as effective scavenger of DPPH radicals with 33.5% total phenolic content, highest γ-ray radioprotective effect and higher anti lipid peroxidation activity.     

白刺与枸杞中微量元素含量的对比研究

采用ICP-AES法对生长在同一区域内的白刺与枸杞根茎中的8种微量元素的含量进行了分析测定。结果表明,两种植物根茎中8种元素含量丰富,并且差异明显,为以后的开发利用提供了基础数据。     

Determination of Fatty Acids in Three Nitraria Species by Precolumn Fluorescence Labeling for High-Performance Liquid Chromatography and Atmospheric Pressure Chemical Ionization–Mass Spectrometry

A novel fluorescence method using 2-(7-methyl-1H-pyrazolo-[3,4-b] quinoline-1-yl) ethyl-4-methyl benzenesulfonate as the labeling reagent was established for high-performance liquid chromatography determination of fatty acids. The conditions were optimized, including the identity of the organic solvent, identity, and amount of catalyst, amount of derivatization reagent, derivatization temperature, and derivatization time. The results indicated that quantitative yields of derivative were obtained with a five-fold molar excess of reagent at 90°C for 30 min using 25 mg of potassium carbonate as the catalyst. Atmospheric pressure chemical ionization mass spectrometry results indicated that collision-induced dissociation of protonated fatty acid derivatives produced fragments at m/z 228.2, m/z 210.2, and m/z 183.8. The method was validated in terms of linearity, limits of detection, limits of quantification, precision, and accuracy, and the results showed that the method exhibited excellent sensitivity, selectivity, and reproducibility. Limits of detection and limits of quantification were in the ranges of 0.52–2.34 ng mL^?1 and 1.23–6.63 ng mL^?1, respectively. This method was successfully applied to the determination of fatty acids in sarcocarps, seeds, and leaves of Nitraria tangutorum Bobr., Nitraria sibirica Pall., and Nitraria roborowskii Kom. The results indicated that the main components were oleic, linoleic, linolenic, and hexadecanoic acids. However, the composition of fatty acids in the tissues varied considerably.     

青藏高原白刺、枸杞和沙棘果粉中微量元素含量比较研究

采用原子吸收光谱法、氢化物原子荧光光谱法对青藏高原白刺、枸杞、沙棘果粉中的13种元素进行了分析测定。结果表明,3种植物果粉中的Cu、Fe、Mn、Zn、K、Ca、Na、Mg等8种元素含量丰富且差异显著,Pb、As、Cr、Cd、Hg等5种重金属元素含量均较低,为3种植物资源深度开发利用提供了基础数据。     

Assessment of mineral elements and heavy metals in leaves of indigenous cypress of High Atlas Mountains

An inductively coupled plasma mass spectrometry was developed to determine 20 mineral elements and heavy metals in leaves of Cupressus atlantica Gaussen, a traditional Moroccan medicinal herb from five environmentally different sites in N'Fis valley (High Atlas Mountains). The results showed in the leaves that Ca, K, P, Mg, Na and Fe were the most abundant of the elements in all samples of the studied locality. The concentrations of trace metals from the leaves of this plant were in the order Ca>K > P > Mg>Na>Fe. The results of the mineral composition were analysed by hierarchical cluster and principal component analysis that established three statistically significant clusters.     

电感耦合等离子体发射光谱法测定柑桔类水果及果皮中多种微量元素

采用HNO_3-HClO_4体系湿法消解样品,利用电感耦合等离子体发射光谱仪同时测定了柑桔类水果及果皮中Al、B、Ba、Ca、Cu、Fe、K、Mg、Mn、Na、Sr、Zn 12种微量元素的含量。分析结果的相对标准偏差0.35%~3.26%,加标回收率85.5%~107.0%,该法简单、快速、可靠、灵敏度高。实验表明,大部分柑桔类水果果皮中微量元素含量高于其果肉中含量。柚子内皮和外皮中微量元素含量有少许差异,柚子外皮中的K、Ca、Mg含量最高,而柚子内皮中Fe、Na的含量较高。该结果为有效利用柑桔类水果果皮的药用功效提供了定量参考依据。     

无花果叶微量元素的分析

对无花果叶中微量元素进行了检测，结果表明：无花果叶含有微量元素锶、锰、铁、铜、锌、铬、镍、硒、钴，其中以铁、锌含量最高。同时还测定出镁、钙含量也极高。此与无花果果实所含的微量元素有很大的相似性和可比性，同样能用于防治癌症、痔疮等疾病，还可用于治疗糖尿病，具有较高的药用价值和开发优势。