ICP-MS测定两种一枝黄花中12种微量元素

为确定两种一枝黄花中微量元素的差异,建立了微波消解-ICP-MS法,测定加拿大一枝黄花与一枝黄花中Ca、Mg、P、Fe、Mn、Ni、Cu、Zn、Se、Cr、Hg和Pb12种微量元素。方法的加标回收率为95.2%～107.1%,相对标准偏差在2.5%～8.9%之间,检出限在0.002～0.057μg.L-1之间,该方法具有良好的准确度和精密度。分析结果表明,加拿大一枝黄花与一枝黄花均含有Ca、Mg、P、Mn和Fe元素,前者中Ca、Cr、Mn、Zn、Pb、Ni含量较高,而后者中的Mg、P、Fe、Cu、Se含量较高。     

人肺癌及癌旁组织中Sc等11种元素的比较研究

很多元素与肿瘤的发生、发展有着密切关系。为对肺癌与元素之间关系有一个更加完整认识,本研究测定17对肺癌及癌旁组织中54种元素含量,结果发现Sc、Fe、Co、Ga、Ag、CdI、n、Sn、Sb、Pb、Bi等11种元素在癌组织中含量显著低于癌旁组织。本文对其降低原因和机理进行初步讨论。     

ICP-MS法测定螺旋藻和茶多酚中微量元素

准确测定螺旋藻、茶多酚中9种人体必需微量元素的含量。采用电感耦合等离子体-质谱法(ICP-MS)进行测定。结果证明该法灵敏度高、结果准确、检出限低、具有良好的精密度和准确度,是测定螺旋藻、茶多酚中微量元素的有效方法。     

不同消解方法ICP-MS测定植物样品中40种微量元素的比较

Simultaneously determination of 42 trace elements in varies plant reference materials by different digestion techniques ICP-MS was evaluated. The digestion techniques was compared with that using different reagents. Using of HF will improve recovery of the rare earth element and Be, Ti, Sb, U etc and the disadvantage is As, B, Hg will volatilize due to drive HF using HNO₃. But it can be avoided with using nebulizer and spray chamber of resistant HF in ICP-MS.     

ICP-MS同时测定玛咖中16种稀土元素的研究

建立一种快速消解并同时测定玛咖中稀土元素的方法。采用微波消解样品,选择In作内标,电感耦合等离子体质谱法(ICP-MS)测定玛咖中稀土元素。对于所测的元素,校准曲线的相关系数>0.9990,回收率范围91.0%~111.0%,相对标准偏差0.4%~3.7%。该方法简便、快速、准确,灵敏度高,可用于玛咖中稀土元素的测定。     

ICP-MS法测定地衣和鸡蛋粉中9种微量元素及其不确定度的评定

用硝酸和高氯酸混合酸消解样品 ,ICP MS法同时测定地衣和鸡蛋粉中Mn、Cu、Zn、Sr、Cd、Fe、Pb、As和Se9种微量元素的含量。在优化实验下 ,测得检出限为 (ng/L) :55Mn2 ,6 3Cu4 ,56 Fe4 ,6 6 Zn9,88Sr1,114 Cd2 ,2 0 8Pb5 ,75As12 ,80 Se6 0。用国家一级标准物质甘兰GBW0 85 0 4验证方法的准确度 ,测定值与标准值吻合较好。并对不确定度的评定程序举例说明     

超级微波ICP-MS法测定食用猪油中5种微量元素

建立了超级微波ICP-MS(电感耦合等离子体质谱)法测定食用猪油中5种微量元素。使用超级微波对食用猪油消化前处理,直接定容,采用ICP-MS法进行分析。结果表明:在0~20μg/L浓度范围内,5种元素标准曲线的线性关系良好,相关系数在0.9998~1.0000之间,检出限在0.003~0.017μg/L,加标回收率在98.3%~109.2%,RSD在2.62%~5.26%之间。相比于传统微波,该方法耗时短,效率高,可以满足日常大量样品分析。     

ICP-MS同时测定地表水中8种金属元素

采用电感耦合等离子体质谱法同时测定地表水中砷、锑、铅、镉、铊、铍、钴、钒8种金属元素含量。对质谱干扰和非质谱干扰进行了校正。外标法定量,8种元素在一定的质量浓度范围内与其信号强度呈线性关系,各元素标准曲线的相关系数均大于0.999,方法检出限为0.000 2~0.12μg/L,实际水样加标回收率为91.0%~105%,相对标准偏差为1.23%~5.69%(n=6)。     

人体粪便中14种微量稀土元素的ICP-MS测定研究

Human feces were collected in acid-washed plastic containers for three consecutive days from 30 subjects of Zhenjiang area, the fecal samples for the three-days period were pooled, weighed and homogenized, then dried, ground and ashed at 相似文献   

ICP-MS测定饮用水中痕量元素

ICP-MS技术目前在我国地面水测定中应用还较少，本文通过对饮用水中微量元素的检出限、精密度、加标回收及对标准内控样品的测定，说明用ICP-MS测定饮用水中痕量元素具有干扰少、检出限低、测定快速、能同时测定多种元素等优点。     

电感耦合等离子体质谱测定稀土矿区儿童血中超痕量稀土元素

Blood rare earth elements (REEs) were determined by inductively coupled plasma mass spectrometry (ICP-MS) in 112 children aged 7-10 years randomly. Samples are from the area containing rare earth ore and the control area in Xunwu County, Jiangxi province. Seen from fifteen kinds of REEs, eleven kinds of REEs increased in children's blood in rare earth ore area, and total light REEs content was 0.85 times higher and total heavy REEs content was 0.50 times higher than that in the control area. The blood REEs content would be higher if living a long time in the environment with high concentration of REEs.     

电感耦合等离子体质谱测定生物样品中超痕量稀土元素(英文)

本文描述了用电感耦合等离子体质谱仪分析生物样品中超痕量稀土元素的方法 ,采用优良的测试方法和合适的样品处理程序 ,对毛发、血清、血液和组织样品的稀土成份分析能够获得高的准确度和精密度 ,检测限达到 7～ 2 6 pg/m L。 GBW 0 91 0 1品稀土元素的回收率为 95～ 1 0 5% ,相对标准偏差为 2 .6～ 4.2 %。     

微波消解-ICP-MS法测定铜合金中的多种微量元素

研究了用微波消解-电感耦合等离子体质谱法同时测定铜合金中的P、Al、Mn、Fe、Cu、Sn、Sb、Pb等8种元素的分析方法。试样用王水溶解，在仪器最优化的条件下同时测定上述元素。考察了两种标准参考物质，各元素的测定值与参考值吻合，相对标准偏差≤2．8％，回收率为91．1％～107．4％。方法准确、快速、简便、重现性良好。     

电感耦合等离子体质谱测定人肝中48种微量元素

采集16例暴死人肝样品，他们死之前是正常健康人，生活在中国不同膳食类型的四个地区。利用HNO3和H2O2微波消解样品，ICP-MS测定人肝中48种微量元素。铼（Re）作为内标元素，用本法分析了国家标准物质GBW（E）081093牛肝和GBW09101人发，P，Cd，Co，Cu，Pb，Rb，REEs，Y等21种元素的测定值和标准值基本吻合。本法简便，快速，灵敏和准确。     

电感耦合等离子体质谱测定人肝中48种微量元素

Human liver samples were obtained in autopsy from 16 subjects died suddenly, who were healthy, normal before death and lived in 4 different areas with different dietary types in China. To determine 48 micro quantity elements in human liver by inductively coupled plasma mass Spectrometry (ICP-MS),samples were microwave digested using HNO₃ and H₂O₂ . Rhenium was used as an internal standard element standard. Reference materials of GBW(E) 080193 bovine liver and GBW09101 human hair were analysed by the described method. The analytical values of two standard reference materials showed close agreement with the reference values. The method is simple ,rapid, sensitive and accurate.     

电感耦合等离子体磁质谱法测定无尘产品中痕量氯

A method of analysis trace element chloride in cleaning products by Inductively Coupled Plasma-Mass Sepctrometry (ICPMS) was studied. It has good precision (RSD<5%). The LOD is 0.06 μg/L (n=7). The recovery is 93.7%-110.0%.     

电感耦合等离子体质谱测量硒的研究进展

近年来,准确测量生物、食品、环境、地质等样品中的硒元素含量、同位素组成及其各种形态受到越来越多的关注。随着质谱技术的发展,电感耦合等离子体质谱(ICP-MS)技术成为硒的各种特性量研究和测量的重要手段,使其在生命科学、环境地球化学、生物、营养等研究中有着广泛的应用前景。本文综述了ICP-MS法应用于硒同位素比值,元素总量以及多种形态测量技术方面的最新研究进展。     

ICP-MS测定硼矿区饮用水和尿样中的硼及多种元素

The application of inductively coupled plasma mass spectrometry (ICP-MS) for determination of boron in water and urine samples was described. The detect limit (3σ) was 0.057 μg/L. The precision of the method was less than 2%. Multi-elements including Cr, Cu, Cd, Ba, Sr, Mn, Co, Tl, Li, Pb, Ca, Fe, K, Na, Mg, P, Si and Zn could be measured simultaneously. The method was successfully used in practice.     

高分辨电感耦合等离子体质谱法测定煤质样品中49种痕量元素

Various trace elements, especially potential toxic trace elements such as As, Cd, Cr, Cu, Hg, Pb, Ni, Se, Tl, Zn, would be concentrated in processing of coal. Determination of these elements in coal is very important for identification of coal quality. A method is developed for determination of 49 trace elements in coal by high resolution inductively coupled plasma mass spectrometry (HR-ICPMS). Microwave acid digestion and low-temperature airproof acid digestion for sample preparation were investigated. It is shown that the low-temperature airproof acid digestion method is of lower blank, and more suitalbe for the coal sample preparation. The on-line internal standard (Rh) sample introduction is applied to compensate matrix effects in measurement by ICPMS. The method gives low detection limits (0.002-1.60 μg/g) and better relative standard deviations (0.60%-4.78%) for the determined 49 elements in coal.