电感耦合等离子体原子发射光谱法(ICP-AES)测定不同品种山药中矿物质元素与对比研究

采用微波消解样品,运用电感耦合等离子体原子发射光谱法同时测定山药中K,Na,Ca,Mg,Zn,Fe,Cu,Mn,Se,Pb,Cd和Cr 12种元素。结果表明:方法简便、快速、准确;山药富含对人体有益的K,Ca,Fe,Mg,Zn,Mn,Se等矿物质元素,其肉质中重金属元素Pb,Cd,Cr含量均未超过国家食品卫生标准。     

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。     

白族长寿地区硬果仁中19种元素的测定分析

用电感耦合等离子体发射光谱法（ICP－AES）,对云南省白族长寿区的葵花子仁、麻子仁和核桃仁中的Ca、Mg、P、S、Na、AI、B、Fe、Zn、Cu、Mo、Sr、Mn、Cr、Se、Ge、Cd、Pb、As等19种元素进行了测定分析。结果表明,3种硬果仁中含有丰富的人体必需的Ca、Mg、P、S、Na、Fe、Zn、Mn、Se、Cu、Cr、Sr、Mo等有益元素,且P、Mg、S、Ca、Na、Zn、Mn、Fe、Se的含量较高。这些生命元素在3种硬果仁中的含量存在差异。有害元素Cd、Pb均未检出,核桃仁中As含量较高。硬果仁中富含这些生命元素是该地区老人健康长寿的一个重要原因。     

电感耦合等离子体质谱法(ICP-MS)同时测定正山小种红茶中18种微量元素

采用微波消解样品,应用电感耦合等离子体质谱法(ICP-MS)同时测定正山小种红茶中Na、Mg、K、Ca、Fe、Al、Zn、Mn、Cu、Ge、Cd、Cr、Ni、Se、Mo、Hg、As和Pb 18种元素。对于所测元素校准曲线的相关系数0.9990,回收率范围为90.1%～108.1%,相对标准偏差为1.54%～7.57%。正山小种红茶中Na、Mg、K、Ca、Fe、Al、Zn、Mn、Cu、Ge、Cd、Cr、Ni、Se、Mo、Hg、As和Pb 18种元素可用ICP-MS法同时测定,方法简便、快速、准确,灵敏度高。     

卷心菜和芹菜中的17种元素测定

采用微波消解法处理卷心菜和芹菜样品,并用ICP-AES法测定这两种蔬菜中的17种微量元素Ca,Mg,K,Na,P,Zn,Fe,Cu,Mn,Al,Se,Cr,Ni,Cd,As,Pb,Hg。结果表明,两种蔬菜中均含有丰富的矿物元素Ca,Mg,K,Na,P,芹菜中的矿物元素更高,也存在少量能调节人体生理机能的有益微量元素Zn、Fe、Mn、Al、Cu、Ni,除了卷心菜中Hg含量超标外,其它有害重金属元素均属国家食品安全卫生标准之内。     

原子吸收光谱和原子荧光光谱法测定藤茶中微量元素含量

采用微波消解-火焰原子吸收光谱和原子荧光光谱法对藤茶中Fe、Na、Zn、Pb、Cr、Co、Ca、Mg、Cd、As等16种微量元素进行了分析测定。该测定方法的回收率在96%～101%之间,相对标准偏差(RSD)小于5%。结果表明,藤茶中富含Ca、Mg、Fe、Mn、K、Na、Cr、Zn等对人体有益的微量元素,同时还含有微量的有害元素Cd、Pb、Sb,没有发现As和Hg。     

桂花中微量元素的光谱测定

采用火焰原子吸收法同时测定了桂花中K、Na、Ca、Mg、Pb、Cd、Cu、Mn、Co、Zn、Cr、Fe等十二种微量元素的含量。方法的相对标准偏差介于0．07％～2．31％之间,回收率介于93．0％～106．0％之间,分析结果满意,并表明,桂花中含有丰富的金属元素,元素含量由高到低排列顺序为：K,Ca,Mg,Na,Fe,Zn,Cu,Mn,Pb,Co,Cr,CA,说明桂花具有较高的营养价值。     

松口蘑中微量元素的测定

采用火焰原子吸收法同时测定了松口蘑中K、Ca、Na、Mg、Fe、Pb、Cd、Co、Cr、Zn、Mn、Cu等12种元素的含量。方法的相对标准偏差在0.08％－2.32％范围,回收率在97.1%－108.3%范围。结果表明,在三种松口蘑样品中,除含有较高的K、Na、Ca、Mg和一定量的有害元素Cd、Pb外,其余6种对人体有益的微量元素较为丰富。     

电感耦合等离子体原子发射光谱法测定新疆洋葱籽中常量/微量元素

采用微波消解法处理样品,以电感耦合等离子体原子发射光谱法(ICP-AES)测定新疆洋葱籽样品中Co、Cr、Ca、K、Mg、P、Fe、Mn、Na、Ni、Sn、Zn、Cd、As、Se、Cu、Mo和V 18种常量/微量元素。结果显示,新疆洋葱籽中含有丰富的K、Mg、P、Ca和Na等常量元素,此外微量元素Fe、Mn、Zn、Cr、Ni、Cu的含量也较丰富。新疆洋葱籽中含有很多对人体有益的常量及微量元素,有较高的药用价值。     

微波消解-ICP-AES法测定回汉族人群血清中的微量元素

本文测定了宁夏农村地区回汉族人群血清中Li、Co、Cd、Ga、Ba、Sr、Cu、Zn、Fe、Al、Se、Sn、B、Mn、Cr、Ni、Pb、Ca、K、Mg、Na、P、S的含量。采用微波消解对样品进行了前处理,使用电感耦合等离子体原子发射光谱法(ICP-AES)进行测定。该方法的RSD≤3.5%,样品加标回收率为90%~117%。该法简便、快速、灵敏、准确,可用于血清中多种元素含量的同时测定。研究结果表明,K、Fe、Cu、Mn、Ni、Ga、Al、Se、Pb、S、Cd、Cr、Sr、Ca这14种元素含量在回族和汉族之间存在着显著性差异(P0.05),探讨了产生上述差异的原因。     

Trace elements in Variegated Bolete (Suillus variegatus) fungi

Metallic elements such as Ag, Al, Ba, Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, Rb, Sr, and Zn were determined using ICP-OES in a representative set of fifteen fruiting bodies of the edible fungus Suillus variegatus. Fruiting bodies were collected from unpolluted areas near the village of Lubichowo of the Bory Tucholskie forest complex in northern Poland in 2007?C2008. The caps were richer in Ag, Al, Cd, Cr, Cu, Fe, K,Mg, Ni, Rb, and Zn, and the stipes in Ba, Ca, Mn, Na, Pb, and Sr. Cobalt concentration in the caps and stipes was similar. In the caps, the content of the elements decreased in the order (mg per kg of dry weight): K 29000 ± 3700, Fe 1600 ± 80, Mg 990 ± 110, Rb 320 ± 86, Zn 90 ± 19, Ca 75 ± 34, Al 68 ± 32, Na 40 ± 18, Cu 19 ± 7, Mn 13 ± 7, Cd 1.0 ± 0.5, Ni 0.64 ± 0.32, Ag 0.40 ± 0.20, Cr 0.33 ± 0.06, Pb 0.20 ± 0.17, Ba 0.19 ± 0.11, Sr 0.15 ± 0.09, and Co 0.070 ± 0.050. Apparently, S. variegatus collected from background areas are relatively low in Pb and Cd and so are suitable for human consumption.     

Senio river ecosystem: characterization and distribution of inorganic species in water and sediments

Analytical results are reported for the determination of inorganic species in water and sediments sampled in the Senio river ecosystem. The species determined are Cu, Pb, Cd, Zn, Co, Cr, Ni, Fe, Mn, Hg, F-, Cl-, Br, NO3-, SO4-, Na+, K+, Ca++, Mg++, NH4+ in integrated water, and Cu, Pb, Cd, Zn, Co, Cr, Ni, Fe, Mn, Hg in sediments. For all the elements, in addition to detection limits, precision and accuracy are given: the former, expressed as relative standard deviation (sr), and the latter, expressed as relative error (e), were good, being in all cases lower than 6%. Limitedly to Cu, Pb, Cd and Zn a critical comparison with voltammetric measurements is also discussed.     

Determination of heavy metals in air conditioner dust using FAAS and INAA

The elements Cd, Cr, Cu, Mn, Ni, Pb and Zn were determined in dust samples collected from air conditioner (AC) filters from 15 commercial sites of Lahore using flame atomic absorption spectroscopy (FAAS). The elements Cr, Mn and Zn were also determined using instrumental neutron activation analysis (INAA). The results obtained showed that higher amounts of these metals were measured in these dust samples than normally found in soil. This was especially true for Cd, Cu, Pb and Zn. Generally the amounts of Cd, Cr and Mn did not vary throughout the city of Lahore but the amounts of the traffic related Cu, Pb and Zn elements had the more variable ranges of 30–140, 30–230 and 74–2810 mg/kg respectively. The concentrations obtained for Cr, Mn and Zn by INAA were found to be higher than those obtained using FAAS. Analysis of the data obtained showed the digestion procedure employed to be the possible cause for this occurrence. It was also found that Mn was being over-estimated by INAA due to the interference from the Mg peak.     

An integrated approach to the complete chemical analysis of magnesium or sodium diuranate (yellow cake) sample

A procedure for the complete chemical analysis of magnesium or sodium diuranate (yellow cake) sample is reported. Uranium is determined gravimetrically after peroxide precipitation. Optimum parameters, such as pH, quantity of hydrogen peroxide, volume of sample, temperature and complexing agent for quantitave precipitation of uranium, and effective separation of other elements were studied. Aluminum, Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, and Zn were determined by flame atomic absorption spectrometer and B, Mo, SO₄, REEs and Y by inductively coupled plasma atomic emission spectrometer in the filtrates of hydroxide and peroxide precipitation separation. The proposed method is accurate and the precision is characterized by an RSD of ~0.2% for U; 2 to 6% for Mg, Na, K, Ca, Fe, SiO₂, Al, Cd, Co, Cr, Fe, Mn, Ni, Pb, and Zn and 3 to7% for REEs, Y, Mo and B     

Inorganic species in water and sediments of the Lamone and Marzeno rivers ecosystem

Analytical results are reported for the determination of inorganic species in water and sediments sampled in the Lamone and Marzeno rivers ecosystem. The species determined are Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, Zn, Hg, F-, Cl- Br-, NO3-, SO4--, Na+, K+, Mg++, Ca++, NH4+ in superficial water, and Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, Zn, Hg in sediments. For all the elements, in addition to detection limits, precision and accuracy are given: the former, expressed as relative standard deviation (s(r)), and the latter, expressed as relative error (e), were good, being in all cases lower than 6%.     

主成分分析用于浙贝母中无机元素含量的研究

采用原子吸收光谱（AAS）法测定了10个浙贝母样品中12种无机元素的含量,建立浙贝母无机元素指纹图谱,并用SPSS13．0方差分析和主成分分析对浙贝母中的微量元素进行了分析。结果表明,浙贝母的特征无机元素是Cd,Cu,Pb,Mg,Cr,Fe,Zn。可见主成分分析法是浙贝母无机元素分析的有效方法。     

Determination of trace elements of some Egyptian crops by instrumental neutron activation,inductively coupled plasma-atomic emission spectrometric and flameless atomic absorption spectrophotometric analysis

Instrumental neutron activation analysis was used for the determination of Al, Br, Ca, Ce, Cl, Co, Cr, Cs, Eu, Fe, K, La, Mg, Mn, Na, Rb, Sb, Sc, Se, Ti, Th, V and Zn, ICP-AES for the determination Al, Ag, Ba, Be, Ca, Co, Cr, Cu, Fe, Ga, K, Li, Mg, Mn, Na, Ni, P, Sc, Sr, Ti, V and Zn and flameless AAS for the determination of Cd, Hg and Pb in egg plant, potatoes, green pepper (Leguminosae), vegetable marrow (Cucurbitaceae), pears, apple (Rosaceae), castor oil plant (Euphorbiaceae), lettuce (compositae), dill, parsley, coriander (Umbelliferae), and in some soil samples collected from Aswan province.