微波辅助消解ICP-AES法测定地笋中18种元素

采用微波消解法处理地笋样品,电感耦合等离子体发射光谱(ICP-AES)测定其中K、Na、Ca、Mg、P、Sr、Fe、Mn、Zn、Cu、Co、Cr、Al、Ba、Ni、As、Pb和Cd 18种常量和微量元素的含量。18种元素的检出限为0.00003～0.00990μg/mL,回收率89.20%～110.00%,相对标准偏差(RSD)均小4.8%。结果显示,地笋样品中除含有人体必需的常量元素K、Na、Mg、Ca外,还含有Fe、Zn、Mn、Cr、Co等必需的微量元素和其他元素P、Ni、Ba、Al、Sr、Pb、Cd、Ba等。     

微波辅助消解ICP-AES法测定8种香料中矿质元素

采用微波消解法处理样品,电感耦合等离子体发射光谱(ICP-AES)测定8种香料中Na,K,Sr,Ca,Mg,P,As,Zn,Pb,Co,Cd,Ni,Ba,Fe,Mn,Cr,Cu,B,Ti和Al 20种常量和微量元素的含量。20种元素的检出限为0.00006~0.00471μg/mL,回收率为90.30%~109.50%,相对标准偏差(RSD)均小于6.0%。结果显示:8种香料样品中除含有人体必需的K,Na,Mg,Ca外,还含有Fe,Zn,Mn,Cr,Co等必需的微量元素和其它元素P,Ni,B,Al,Sr,Pb,Cd,Ba等。     

ICP-OES测定不同产地枇杷叶中20种元素

采用微波消解处理样品,建立ICP-AES测定Cu、Pb、Zn、Ni、Cd、Cr、Fe、Mn、Al、Ti、B、Sr、Mo、Ba、Co、Si、K、Na、Ca和Mg 20种元素质量浓度的分析方法。结果表明,各种元素在其线性范围内线性关系良好,r值为0.999 4～0.999 9,平均回收率为90.3%～96.7%, RSD5%(n=6)。ICP-OES可同时测定多种元素,方便快捷。通过ICP-OES检测研究18个不同产地枇杷叶样品中20种元素结果及相关规律, 20个元素含量高低顺序为Ca、K、Mg、Ba、Na、Sr、Fe、Zn、B、Mn、Cu、Al、Pb、Ni、Ti、Li、Mo、Cr、V和Cd。     

微波消解-ICP-AES和ICP-MS测定棠梨中29种元素的含量

建立微波消解-电感耦合等离子发射光谱(ICP-AES)和电感耦合等离子质谱(ICP-MS)测定棠梨中29种元素的方法。样品经微波消解,以ICP-AES测定K、Na、Ca、Mg、P含量,ICP-MS测定B、Al、Fe、Mn、Zn、Cu、Pb、Cd、As、Cr、Ni、Li、Be、Ti、V、Co、Tl、Se、Sr、Mo、Ag、Sn、Sb、Ba含量。结果表明:ICP-AES检出限范围在0.159～2.79μg/L,ICP-MS检出限范围在0.00177～0.297 μg/L。此方法精密度(RSD)处于0.32%～4.2%之间,回收率介于86.8%～101.7%之间。国家标准物质大米的检测结果与参考值基本相符。测定结果表明,棠梨中含有丰富的微量元素,其中含量在10μg/g以上的有K、P、Ca、Mg、Fe、B、Sr,其中K、P、Ca元素含量较高,同时也含有一定量的重金属危害元素Co、Al、Ba。该方法污染小、简便、高效、准确度高,适用于棠梨等植物类样品中多种化学元素的测定。     

微波消解-电感耦合等离子发射光谱快速测定桃金娘果的20种元素质量浓度

建立微波消解桃金娘果,采用电感耦合等离子发射光谱(inductively coupled plasma atomic emission spectrometry,ICP-AES)测定Cu、Pb、Zn、Ni、Cd、Cr、Fe、Mn、Al、Ti、B、Sr、Mo、Ba、Co、Si、K、Na、Ca和Mg 20种元素质量浓度的分析方法.20个元素在其线性范围内线性关系良好,r在0.9994~0.9999之间,平均回收率在90.7%~98.6%之间,RSD<4%(n=6),满足检测要求.ICP-AES可同时测定多种元素,方法快便,结果准确,重复性好.     

微波消解ICP-OES测定牛蒡茶中的矿质元素

采用HNO3/H2O2微波消解的制样方法,利用全谱直读电感耦合等离子原子发射光谱仪(ICP-OES)对牛蒡茶中的Al、As、Ba、Ca、Cd、Cr、Cu、Fe、K、Mg、Mn、Na、Ni、P、Pb、Sr、Ti、Zn等18种矿质元素进行了测定。结果表明,牛蒡茶中含有人体必需常量元素K、Na、Ca、Mg、P和人体必需微量元素Cu、Fe、Mn、Ni、Ti、Zn,以及人体非必需的微量元素Al、Ba、Sr,而有害元素As、Pb、Cr、Cd均未检出。并建立了一种牛蒡茶中矿质元素的分析测试方法,各元素的回收率均在93.7%~107%,相对标准偏差在1.31%~2.31%,检出限低且满足各元素分析要求,此方法具有简捷、快速、准确的特点。     

新疆岩蜥和塔里木岩蜥全体、肌肉与皮肤中18种元素分析比较

采用原子吸收分光光度计测定了新疆岩蜥(Laudakia stoliczkana Blanford)和塔里木岩蜥(Laudakia tarimensis Zugmayer)全体、肌肉与皮肤中的K、Ca、Na、Mg、Fe、Zn、Mn、Sr、Cu、Mo、Cr、Ba、Co、V、Pb、Cd、Ni及Be18种元素的含量。结果表明,这两种岩蜥的常量元素和微量元素含量都比较丰富,其中K、Ca、Na、Mg、Fe、Zn、Sr、Mn、Cr、Br、Cu、Co、Mo含量比较高,而有毒元素Al、Pb、Ni和Cd的含量甚低。在这两种岩蜥全体、肌肉与皮肤三种样品中全体样品元素含量最高,但各元素含量的差异不明显。对两种岩蜥体内人体必需而具有抗癌作用的Fe、Zn、Sr、Mn等微量元素含量进行比较发现,新疆岩蜥分别为168.36、94.14、78.12、44.28μg/g,塔里木岩蜥分别为338.22、183.16、88.44、32.46μg/g。塔里木岩蜥中的Fe、Zn、Sr含量高于新疆岩蜥,而新疆岩蜥的Mn含量高于塔里木岩蜥。新疆岩蜥和塔里木岩蜥作为中药及维吾尔医药具有较高的药用价值及应用前景,并讨论了这些元素与其药用机理的关系,为这两种药用岩蜥的进一步研究及其开发利用提供科学依据。     

ICP-MS/ICP-AES法测定姜黄中的无机元素

文章以姜黄为原料,用ICP-MS法测定Li,B,Mg,Al,P,Ca,Ti,V,Cr,Mn,Fe,Co,Ni,Cu,Zn,Sr,Ba,Cd,Pb,以ICP-AES 法测定Ca、Mn,方法的准确度经用两个国家一级标准物质GBW 10015、GBW 10020对比分析,证实具有良好的准确度,精密度试验显示RSD在0.5%～7.1%之间,结果显示本法的准确度和精密度,完全可以满足姜黄样品中无机元素测定要求.     

ICP-MS/ICP-AES法测定中药益智仁中的元素含量

采用电感耦合等离子体质谱(ICP-MS)法同时测定中药益智仁中Li、B、Mg、Al、P、Ca、Ti、V、Cr、Mn、Fe、Co、Ni、Cu、Zn、Sr、Ba、Cd、Pb的含量,以电感耦合等离子体发射光谱(ICP-AES)法测定Ca、Mn的含量,方法的准确性用两个国家一级标准物质GBW10015、GBW10020对比分析证实,精密度实验大部分低于5%。结果表明该法快速简便、准确率高、精密度好,完全可以满足样品中无机元素测定要求。     

ICP-MS对配制酒中澄清酒体和沉淀的金属元素分析

利用微波消解结合电感耦合等离子体质谱仪(ICP-MS)方法检测桑葚、山药和枸杞配制酒中澄清酒体和沉淀中K、Na、Ca、Mg、Fe、Al、Zn、Mn、Cu、Ni、Ba、Sr、Se、Co、Cr、V、Ag、Sb、Pb、As和Cd 21种金属元素含量,并对其进行线性回归分析,进一步分析澄清酒体和沉淀的差异。结果表明,澄清酒体主要金属元素是:K、Ca、Mg、Na,沉淀中主要金属元素是:K、Ca、Mg、Na、Fe、Al、Zn、Mn、Cu、Ba、Sr;线性回归分析表明澄清酒体和沉淀中的金属元素具有一致性,且在沉淀中的元素相对澄清酒体中对应的元素含量均有很大程度的上升,为解析酒体沉淀的形成提供理论依据。     

微波密闭消解-ICP-AES同时测定贼小豆中18 种矿物质元素

为探讨郑州地区野生贼小豆中微量元素的组成、含量和分布特性,充分开发利用贼小豆自然资源,用微波 密闭消解-电感耦合等离子体发射光谱法同时测定了贼小豆样品中Al、Ba、Ca、Cd、Co、Cr、Cu、Fe、Hg等18 种 微量元素。结果表明：在优化条件下,待测各元素间相互干扰较小,18种元素在一定范围具有良好的线性关系,相 关系数（r）均不小于0.995 0,检出限范围为0.000 1～0.035 μg/mL,定量限范围为0.000 17～0.058 μg/mL,平均回收率 为97.08%～113.06%,相对标准偏差为0.14%～3.2%（n=6）。该法所用样品和消解剂量少,消解完全、快速省时,待 测元素不易挥发损失,可同时测定18 种矿物质元素,工作效率较高,用于贼小豆样品的测定,结果令人满意。     

浓香型白酒蒸馏过程中金属元素的迁移变化规律

利用微波消解结合电感耦合等离子体质谱检测的方法测定泸州老窖浓香型白酒蒸馏过程中,蒸馏前后的酒糟、底锅水及所得的酒样样品中Na、K、As、Pb、Cd、Sn、Ti、Mg、Fe、Cu、Mn、Zn、Ca、Al、Ni、Cr和Ba 17 种金属元素的含量,并借助SPSS统计学软件采用t检验分析酒体中对应元素的来源。结果表明,蒸馏之后超过94%的金属元素仍保留在糟醅中,不到6%的金属元素转移至白酒及底锅水中。Pb、Mn、Cr等重金属元素的转移率显著低于Na、K、Ca和Mg等矿质元素,有效减少了酒中Pb、Mn、Cr等重金属的超标几率。酒样中的Ca、Cu、K、Mg、Na、Zn和Ba等元素主要来源于糟醅,而蒸馏使用的设备则会引入Fe、Ni、Al、Sn元素,Pb和Cr等有害重金属。     

Trace elements in faba bean (Vicia fabaL) plant and soil as determined by atomic absorption spectroscopy and ion selective electrode

Trace (Ag, Au, Co, Cr, Cu, Fe, Mn, Ni, Pb, Sr and Zn) and macro (Ca, K, Mg and Na) element concentrations were determined by atomic absorption spectrophotometry, and chloride by an ion selective electrode, in different parts of the faba bean (Vicia faba L) plant. Leaf, stem, pod, pericarp, cotyledon, testa and seeds were all analysed as were soil samples taken from the immediate vicinity of the plant roots at depths of 10, 30 and 60 cm before and after planting the bean plant. The experiment was situated on the shores of the High Dam Lake in Aswan (Egypt). The bean leaves showed the highest concentrations of Ca, Mg, Fe, Sr, Mn, Ni, Co, Pb and Cr while the seeds showed the highest concentrations of Zn and Cu. The highest levels of trace elements in the soil were found at 60 cm depth after planting which suggests the uptake of most trace elements by the plant is from the 10–30 cm depth zone. Statistically there were significant correlations between trace element concentrations in the bean and soil samples. The levels of trace elements in the bean under study were not considered to be toxic for man or animal uses. © 1998 SCI.     

Contribution to the study of avocado honeys by their mineral contents using inductively coupled plasma optical emission spectrometry

Avocado honey samples were analyzed by inductively coupled plasma optical emission spectrometric. First, the botanical origin of the honeys was confirmed by melissopalynological analysis. Twenty-four minerals were quantified for each honey sample. The elements Al, Ba, Ca, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Na, Ni, P, Pb, S, Se, Si and Zn were detected in all samples; seven elements were very abundant (Ca, K, Mg, Na, P, S and Si), six were not abundant (Al, Cu, Fe, Li and Zn) and 11 were trace elements (As, Ba, Cd, Co, Cr, Mo, Ni, Mo, Pb, Se, Sr and V).     

有机成分与元素分析相结合鉴别6 种中国名茶

利用有机成分与元素分析相结合,建立6 种中国名茶的鉴别方法。通过原产地购买67 份不同产地的茶叶,包括绿茶（杭州龙井、苏州碧螺春、黄山毛峰、庐山云雾）和乌龙茶（武夷岩茶、安溪铁观音）,利用电感耦合等离子体-原子发射光谱测定茶叶中K、Ca、Mg、Al、Mn、Fe、Zn、Rb、Ti 9 种元素,利用电感耦合等离子体-质谱法测定Pb、As、Cd、Cr、V、Ni、Co、Cu、Sr、Cs、Ba、Se 12 种元素,利用超高效液相色谱测定茶叶中10 种有机成分。通过偏最小二乘变量筛选法分别建立6 种中国名茶的元素判别模型和有机成分判别模型,并设定已知茶叶样本的确证及未知茶叶样本的溯源流程。实际样品检测结果表明,6 种中国名茶分类效果较好,通过2 种模型交叉验证可有效减少结果误判。     

电感耦合等离子体质谱法测定黑小麦中多种元素

建立黑小麦中B、Na、Mg、Al、K、Ca、Ti、V、Cr、Mn、Fe、Co、Ni、Cu、Zn、Se、Cd、Pb元素的分析方法。以硝酸和双氧水为混合试剂采用密闭微波消解法对黑小麦样品进行消解后用电感耦合等离子体质谱法进行分析。利用动态反应池技术有效地消除了分析过程中的质谱干扰,选用Sc、Ge、Rh、Bi为内标元素校正基体效应和信号漂移。元素Mg、Al、K、Ca在0～10.00 mg/L线性范围内线性关系良好,其余元素在0～50.00 μg/L内线性关系良好,该方法测定黑小麦中18 种元素的检出限在3.04～17.38 ng/L之间,相对标准偏差为0.95%～12.50%,采用国家一级标准物质小麦（GBW 10011）验证方法的准确度和精密度。黑小麦中B、Mg、K、Ca、Fe、Mn、Se含量远高于普通小麦,而Na元素明显低于普通小麦。方法可用于黑小麦的质量控制和营养评价。     

MINERAL COMPOSITION OF MEDLAR (MESPILUS GERMANICA) FRUIT AT DIFFERENT STAGES OF MATURITY

Abstract The mineral composition of medlar fruit collected (June 15 - October 8) in Turkey at five stages of development was studied. In the fruit, 32 minerals were analyzed and 16 minerals (Al, Ba, Ca, Cu, Co, Fe, K, Li, Mg, Mn, Na, Ni, P, Sr, Ti and Zn) were present at detectable levels. The ripe medlar fruit was richest in potassium (7370 μg/g dry wt), calcium (1780 μg/g dry wt), phosphorus (1080 μg/g dry wt), magnesium (661 μg/g dry wt) and sodium (183 μg/g dry wt). During the fruit development, Al, Ba, Fe, Mn, P, Sr, and Zn were highest in August (unripe fruits) while the concentrations of K, Ca, Mg and Cu gradually decreased throughout development. The ripe medlar fruit is an important source of nutritionally needed minerals and trace elements, in particular Ca, Cu, Fe, K, Mg, Mn, Na and Zn, for human populations in southeastern Europe, Turkey and Iran.     

Cadmium,lead and some other trace elements in Larch Bolete mushrooms (Suillus grevillei) (Klotzsch) Sing., collected from the same site over two years

The aim of this study was to examine the status of some trace metals accumulated in the flesh of Suillus grevillei mushrooms collected from the same site over two successive years. Total Ag, Al, Ba, Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, P, Pb, Rb, Sr and Zn contents of fruiting bodies were determined by inductively coupled plasma atomic emission spectroscopy (ICP-AES) with ultrasonic cross-flow nebuliser. A difference (p < 0.05) was found in the contents of Cd, Cr, Cu, Fe, K, Na, Ni, Pb, Rb and Sr in caps and Fe, Na, P and Rb (p < 0.05) in stipes (Ag, Cd, Co, Cr, Ni and Pb were not determined in stipes). Natural fluctuations in trace elements’ content of Suillus grevillei collected from the same site over time is a variable that needs to be considered when assessing minerals’ nutritional status of mushrooms.     

Simultaneous Determination of 20 Inorganic Elements in Preserved Egg Prepared with Different Metal Ions by ICP-AES

In the present study, 20 inorganic elements in three parts of preserved eggs prepared with different metal ions, including Al, As, Ba, Ca, Cd, Co, Cr, Cu, Fe, Li, K, Mg, Mn, Mo, Na, P, Pb, Zn, Se, and Sr, were determined simultaneously by using inductively coupled plasma–atomic emission spectrometry (ICP-AES). The recoveries obtained by the standard addition method ranged between 84.4 and 112.2 %, and RSDs were lower than 8.76 %, The detection limits of the method for the 20 elements were in the range of 0.4–10 μg?L^?1. The determination results showed that three parts of preserved eggs prepared with different metal ions are all rich in essential inorganic elements, such as Na, K, P, Ca, Mg, Fe, Cu, and Zn, and the contents of most of the inorganic elements in egg yolk are higher than in egg white. In comparison with fresh duck eggs, the contents of Na, Cu, Fe, Al, and Mn are significantly increased in three parts of preserved eggs prepared with different metal ions. Metal ions added in pickling solution would significantly affect the content of element added in preserved eggs. High contents of Pb (20.15 μg/g in egg shell, 18.99 μg/g in egg white, and 0.96 μg/g in egg yolk) were found in preserved eggs with PbO. Meanwhile, the experimental results indicated that the ICP-AES technique is easy to operate, rapid, accurate, and highly sensitive to determine many inorganic elements simultaneously in preserved egg.     

ICP-MS法测定云南省8 种野生牛肝菌中矿质元素含量

以云南省8 种野生牛肝菌为对象,研究子实体不同部位矿质元素含量、吸收和积累特征。采用微波消解处理样品,以电感耦合等离子体质谱法测定云南省8 种野生牛肝菌子实体菌柄、菌盖中Mg、Mn、Fe、Ni、Cu、Zn、Cr、As、Cd、Pb、Li、Ba 12 种矿质元素的含量,并用SPSS软件进行方差分析,从元素的角度对其进行安全性评价,分析牛肝菌中矿质元素的含量水平。结果显示,标准品（GBW 10015）中12 种矿质元素回收率在88%～105%之间,检出限在0.036～9.456 μg/L之间,表明该方法准确、可靠;8 种野生牛肝菌菌柄与菌盖中含有丰富的Fe、Mg、Mn、Zn和Cu元素;Zn、Mg、Cu、Cr和As元素在多数子实体内菌盖的含量高于菌柄,Li和Ba在多数牛肝菌样品中菌柄含量较高;有毒重金属元素Pb、As、Cd、Ni和Cr含量均高于GB 2762-2012《食品中污染物的限量》的规定,对人体健康有潜在风险。通过数据分析表明,野生牛肝菌中12 种矿质元素含量具有显著差异,同一元素在不同牛肝菌中的含量差异较大,相同子实体菌柄与菌盖中含量差异显著,对矿质元素和重金属元素有较好的吸收和富集能力。