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1.
电感耦合等离子体原子发射光谱(ICP-AES)技术的应用进展 总被引:5,自引:1,他引:5
阮桂色 《中国无机分析化学》2011,1(4):15-18
概述了近年来电感耦合等离子体原子发射光谱技术的发展,并分别详细介绍了近年来电感耦合等离子体原子发射光谱法(ICP-AES)在金属材料、地矿、冶金、水质、环境、食品、农业、石油化工、生物、医药等不同领域的应用进展。最后对电感耦合等离子体原子发射光谱分析法的发展前景做了展望。 相似文献
2.
阮桂色 《中国无机分析化学》2011,1(4)
概述了近年来电感耦合等离子体原子发射光谱技术的发展,并分别详细介绍了近年来电感耦合等离子体原子发射光谱法(ICP-AES)在金属材料、地矿、冶金、水质、环境、食品、农业、石油化工、生物、医药等不同领域的应用进展。最后对电感耦合等离子体原子发射光谱分析法的发展前景做了展望。 相似文献
3.
对不同的样品消解方法及电感耦合等离子体质谱、电感耦合等离子体原子发射光谱、石墨炉原子吸收光谱法测定土壤中铅的测定结果进行比对。采用电热板、微波及水浴3种加热方式,选择硝酸、氢氟酸、双氧水、王水、高氯酸、盐酸的不同组合进行土壤样品消解,通过分析测定值的精密度和准确度,考察消解体系对电感耦合等离子体质谱、电感耦合等离子体发射光谱、石墨炉原子吸收光谱法测定结果的影响。结果表明采用电感耦合等离子体质谱法测定土壤中的铅,最适宜的消解体系是硝酸-氢氟酸-高氯酸(微波加热),采用电感耦合等离子体原子发射光谱法测定最适宜的消解体系是硝酸(电热板加热),采用石墨炉原子吸收光谱法测定最适宜的消解体系是硝酸-盐酸-高氯酸(微波加热)。电感耦合等离子体质谱法的精密度和准确度优于另外两种方法。 相似文献
4.
《理化检验(化学分册)》2017,(2)
综述了地质样品中总锡分析方法(包括容量法、分光光度法、氢化物发生-原子荧光光谱法、原子吸收光谱法、极谱法、原子发射光谱法、电感耦合等离子体原子发射光谱法、电感耦合等离子体质谱法、X射线荧光光谱法)的研究进展。 相似文献
5.
自从1962年Fassel及Gteen field分别独立地探索了电感耦合等离子体作为原子发射光谱分析的新光源以来,经过二十年的实践及发展,电感耦合等离子体原子发射光谱法(以下简称ICP-AES)已经从其幼年发展到成熟的阶段了。根据Fassel的 相似文献
6.
《理化检验(化学分册)》2016,(6)
综述了铁矿石中砷含量的测定方法研究进展,主要包括分光光度法、原子吸收光谱法、原子荧光光谱法、电感耦合等离子体-原子发射光谱法、电感耦合等离子体质谱法和X射线荧光光谱法等(引用文献45篇)。 相似文献
7.
食品中铝检测方法研究进展 总被引:1,自引:0,他引:1
介绍了食品中铝的来源,并综述了近十年中食品中铝测定方法的研究进展,包括电感耦合等离子体原子发射光谱法、电感耦合等离子体质谱法、石墨炉原子吸收光谱法、电化学分析法以及分光光度法等方法(引用文献75篇)。 相似文献
8.
采用电感耦合等离子体原子发射光谱法测定氟铍酸铵中的8种主要杂质元素。以超声辅助溶解样品,然后用电感耦合等离子体原子发射光谱法测定氟铍酸铵中的钠、镁、铝、铬、铁、镍、铜、磷等8种杂质元素,8种元素线性相关系数均大于0.999,测定结果的相对标准偏差为0.65%~1.55%(n=6),检出限在0.2~19.1μg/L之间,定量范围满足氟铍酸铵中8种杂质元素的限量要求。磷的加标回收率为76.7%,其余7种杂质元素的加标回收率在80.9%~95.1%之间,测量准确度满足分析要求。将电感耦合等离子体原子发射光谱法和电感耦合等离子体质谱法进行了比较,两种方法测定结果基本一致。 相似文献
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The flow-based analysis method, discontinuous-flow analysis (DFA), was used for the determination of total calcium in drinking water, milk and wine by titration with ethyleneglycoltetraacetic acid. The detector is a coated-wire calcium-selective electrode. The titration can be cycled continuously with a cycle time of about 1 min. This can be carried out with a single sample or with different samples using an autosampler. The method for waters and wine is simple, fast and highly reproducible. For milk, a back-titration method was used because of the complex matrix of the sample. 相似文献
12.
A review of the applications of electrophoresis to the determination of various compounds in beverage samples, namely beer, hard drinks, juice, milk, soft drinks, tea and wine, is presented. 相似文献
13.
张菊琴 《中国无机分析化学》2018,8(5):45-47
本文针易电离元素铷,采用原子吸收光谱法和电感耦合等离子体多元素测定的两种方法进行了探讨。三酸溶样的原子吸收法需要加入硫酸钾做电离抑制剂,操作繁杂但检出限更低,线性范围窄;四酸溶样的等离子体光谱法方法简便快速,适合大批量多元素快速测定。两种方法结合使用可实现大批量样品中铷的快捷、简单、准确检测。 相似文献
14.
等离子体原子荧光光谱法测定碳酸锂中钠、钾、钙、镁、铜、铁、钴、镍、锰、锌、镉 总被引:2,自引:0,他引:2
建立了用ICP-AFS同时测定碳酸锂中11种微量金属杂质元素的方法。加入甲烷可改善检出限,方法简便,样品分析结果与AAS法结果一致。 相似文献
15.
57Fe Mössbauer, XRD and DTA Study of the Crystallization Behavior of Calcium Aluminate Glass Containing Iron(III) 总被引:1,自引:0,他引:1
T. Nishida K. Goto S. Kubuki T. Tamaki 《Journal of Radioanalytical and Nuclear Chemistry》2000,246(1):51-56
Certifications of trace elements in existing CRMs, especially biological CRMs, are far from satisfactory. Neutron activation analysis (NAA) for its inherent advantages combined with newly established parametric standardization, may contribute to improve this situation. The continuing progress of the hybrid extended k
0-relative NAA technique developed in our laboratory is discussed. Examples are given to show the reliability of the method in certification of multielements. RNAA is still one of the best methods, or even the method of choice, in analysis at sub-g/g concentration levels. The suitability of the technique for this purpose has been studied through the determination of rare earth elements at ng/g concentration level in two Chinese biological CRMs using both RNAA and ICPMS. Sampling behaviors of multielements in CRMs have been studied by INAA in an effort to develop CRMs suitable for analysis with small sample sizes. 相似文献
16.
Weizhi Tian Bangfa Ni Pingsheng Wang Huiling Nie 《Analytical and bioanalytical chemistry》1998,360(3-4):354-355
Taking the advantage of the high precision and accuracy of neutron activation analysis (NAA), sampling constants have been determined for multielements in several international and Chinese reference materials. The suggested technique may be used for finding elements in existing CRMs qualified for quality control (QC) of small size samples (several mg or less), and characterizing sampling behaviors of multielements in new CRMs specifically made for QC of microanalysis. 相似文献
17.
The use of thermometric titrimetry in the determination of acidic substances in red wine is described. The titration curve obtained in the thermometric titration of red wine with strong base presents two inflections. The stoichiometry corresponding to the first inflection presents good agreement with the so-called "total acidity" of wine, and is proposed for its determination. The second inflection is related to the content of phenolic substances in red wine. 相似文献
18.
孙友宝 《中国无机分析化学》2014,4(3)
采用硝酸-盐酸-氢氟酸高压封闭消解样品,电感耦合等离子体光谱法测定锰结核GBW07296和富钴结壳GSMC-1标准物质中的18种常、微量元素。实验过程中确定了最佳工作条件,选择了最佳分析谱线。实验结果表明,该方法线性相关系数良好r>0.999 8,方法检出限低,精密度高,RSD小于2.0%(n=6),可同时测定锰结壳中的多种金属元素,方法完全能满足岩石、土壤、海洋沉积物中多个元素的检测需求。 相似文献
19.
Determination of ink photoinitiators in packaged beverages by gas chromatography-mass spectrometry and liquid chromatography-mass spectrometry 总被引:2,自引:0,他引:2
Sagratini G Caprioli G Cristalli G Giardiná D Ricciutelli M Volpini R Zuo Y Vittori S 《Journal of chromatography. A》2008,1194(2):213-220
A new analytical method, using gas chromatography-mass spectrometry (GC/MS) and liquid chromatography-mass spectrometry (LC/MS) techniques, was developed for the determination in packaged food beverages of five ink photoinitiator residues: 2-isopropylthioxanthone (ITX), benzophenone, 2-ethylhexyl-4-dimethylaminobenzoate (EHDAB), 1-hydroxycyclohexyl-1-phenyl ketone (IRGACURE 184) and ethyl-4-dimethylaminobenzoate (EDAB). Samples were extracted from selected beverages (milk, fruit juices and wine) and relative packagings, using n-hexane and dichloromethane, respectively, purified on solid-phase extraction (SPE) silica gel cartridges, and then analyzed in GC/MS and LC/MS. The recovery percentages, obtained spiking the beverage samples at concentrations of 4 and 10 microgl(-1) with a standard mixture of photoinitiators, were in the range 42-108% (milk), 50-84% (wine), and 48-109% (fruit juices). The repeatability of the method was assessed in all cases by the % of correlation value, that was lower than 19%. The lowest limits of detection (LODs) and limits of quantification (LOQs), obtained using GC/MS, were in the range 0.2-1 and 1-5 microgl(-1), respectively. The method was applied to the analysis of forty packaged food beverages (milk, fruit juices and wine samples). The most significant contamination was that of benzophenone, found in all samples in a concentration range of 5-217mugl(-1). Its presence was confirmed by an LC/Atmospheric-Pressure PhotoIonization (APPI)/MS/MS analysis. The photoinitiator (EHDAB) was found in eleven out of forty beverages in a concentration range of 0.13-0.8 microgl(-1). Less important was the ITX contamination, found in three out of forty samples in a range 0.2-0.24 microgl(-1). The work proposes a new method to analyze ink photoinitiator residues in polycoupled carton packaging and in contained food beverages. 相似文献
20.
多波长叠加近红外吸收光谱法直接测定酒精饮料中的乙醇 总被引:17,自引:0,他引:17
利用乙醇在1382nm,1691nm和1730nm处的吸光度值,采用多波长叠加近红外吸收光谱法测定乙醇的含量。结果表明,乙醇在0%~24%(V/V)浓度范围内呈良好的线性关系;回归方程为: A= 0. 01754+ 0. 04747C;相关系数r=0. 9994。用该法可直接测定葡萄酒、啤酒和黄酒中乙醇的含量,6次平行测定的RSD分别为;葡萄酒4.0%,啤酒2.5%,黄酒2.4%。回收率为97.5%~105.0%,本方法具有操作简便,准确和快速等优点。 相似文献