共查询到20条相似文献,搜索用时 42 毫秒
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ICP-AES法间接测定精盐水中硫酸根含量 总被引:1,自引:0,他引:1
介绍用ICP-AES法间接测定精盐水中硫酸根含量的方法,其平均回收率为98%,相对标准偏差小于0.5%,可视为EDTA容量法的等效方法。 相似文献
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ICP-AES法测定水处理剂中的痕量铅 总被引:3,自引:0,他引:3
采用微波制样技术,用ICP-AES法测定水处理剂中痕量铅。结果表明,方法的线性范围为0-40μg/L,检出限为0.18μg/L,相对标准偏差为1.7%,回收率为98.4%。该法准确、快速、简便,巳用于水处理剂中痕量铅的测定。 相似文献
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以大量相关文献为依据,从化学成分及其含量测定等方面对地骨皮的研究状况做一综述,介绍了近十几年来,我国关于地骨皮的化学成分及含量研究的进展状况。结论是:近年我国在地骨皮化学成分及其含量测定方面取得了一定的成绩,但地骨皮化学成分及含量仍有待进一步的研究。 相似文献
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本介绍了应用能量色散X射线荧光分析仪(The Energy Dispersive X-ray Fluorescence Spectrometry System简称:EDXRF)测定陶瓷产品及其原料中硅酸盐各主量元素(如硅、铝)和次量元素(如钾、钠、钙、镁、铁等)含量的方法,并采用“粉末压片”的快捷方法来制备样品,对硅酸盐原料中的化学成分进行快速的定性分析和定量测定,取得了较满意的结果。 相似文献
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不同种类粉煤灰化学成分快速测定的研究 总被引:3,自引:0,他引:3
本文主要介绍了如何快速测定不同种类粉煤灰的化学成分,研究认为,采用氟硅酸钾容量法测定粉煤灰中二氧化硅含量的准确度与重量法相当,该法既快速方便,药品消耗又少,并指出了在不分离硅酸的条件下迅速测定粉煤灰中铁铝钙镁等氧化物含量应采取的措施和注意的问题。 相似文献
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研究了微波制样,用ICP-AES法(电感耦合等离子体发射光谱法)同时测定珍珠白样品中Mg,Al,Fe,Pb,Cr,NI,Mn,As8种微量元素的新方法,方法的检出限为0.002-0.036μg/mL,回收率为92.8%-107.6%,RSD小于3.19%,该法准确,快速,简便,应用于花岗石的测定,结果满意。 相似文献
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柯卫华 《现代塑料加工应用》2003,15(3):43-45
采用电感耦合等离子发射光谱法测定聚丙烯中的Al和Ti含量。对仪器参数的选择和酸浓度及共存元素的干扰进行研究。研究结果表明,该方法可用于监测丙烯聚合,也可用于聚丙烯产品分析。 相似文献
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E. E. Pressler 《Journal of the American Ceramic Society》1930,13(11):850-855
A method of feldspar analysis is described by which all the major oxides are determined on one sample, and a practical routine procedure is developed on the basis of this method. 相似文献
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Herbert Insley 《Journal of the American Ceramic Society》1927,10(9):651-669
This investigation was undertaken to develop microscopic methods for determining quantitatively the mineral constituents in feldspars used in the ceramic and allied industries. After several methods had been tried, a method of counting the grains and of using liquids of different indices of refraction for distinguishing the constituents was finally adopted. Nineteen commercial feldspars were analyzed by this method and the results compared with the results obtained by computing the chemical analyses to mineral constituents. Another method in which a partially fused sample was examined microscopically was also found suitable. It is concluded that, while neither the counting method nor the fusion method is as accurate as chemical analysis, the counting method gives satisfactory results for plant control in terms of potash feldspar, plagioclase feldspar, and quartz when used by a skilled microscopist, and the fusion method gives satisfactory results in the hands of the plant technologist for estimating quartz. 相似文献
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E. W. KOENIG 《Journal of the American Ceramic Society》1942,25(14):420-422
Formulas are given for the determination of the percentage amounts of microcline, albite, anorthite, kaolinite, muscovite, and free quartz in feldspars. 相似文献
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E. W. Screture Jr. 《Journal of the American Ceramic Society》1927,10(4):238-242
On addition of acids and bases to fine-ground feldspar or flint, the same phenomena are observed as with clays, Le., flocculation, deflocculation, and absorption. The effects are less sharp than with clays, the zone of deflocculation covering a wider range of PH and flocculation occurring at lower pH (greater acidity). The sensitiveness of flint and feldspar to reagents increases with fineness of grinding. 相似文献
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Nugent A. Ragland 《Journal of the American Ceramic Society》1925,8(6):391-392
A simple laboratory test is described wherein successive shipments of feldspar are checked against preceding shipments. This method gives a very accurate idea of variation of feldspar shipments. It outlines a method whereby corrections for relative fluxing values may be made and at the same time body control can be maintained direct from the shop laboratory insuring consistent firing practice from month to month. 相似文献
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C. R. Amberg 《Journal of the American Ceramic Society》1930,13(12):923-926
A discussion of the use and value of the classification of feldspars as proposed by the Feldspar Grinders' Institute is taken up and another classification based on the pounds of fluxing oxodes per ton is proposed. 相似文献
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用等离子发射光谱法测定巴氏合金中杂质元素,试样用硫酸和硫酸氢钾在高温下分解,经过系列试验,选择仪器的工作条件,进行测定,建立了一套分析方法,经标钢分析,分析结果令人满意。本方法快速准确,精密度良好,完全可以满足生产需要。 相似文献
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中温分解钾长石的热力学分析与实验 总被引:15,自引:0,他引:15
综合介绍了利用助剂分解钾长石的研究现状。通过热力学计算预测以碳酸钠、碳酸钾为助剂分解钾长石的分解反应温度在800~890℃之间。分解反应机理的分析表明:随着焙烧温度的升高。钾长石由单一的焙烧分解状态进入分解和烧结同时进行的状态,实验表明:钾长石矿的分解率达98%以上。以碳酸钠、碳酸钾为助剂在820~850℃即可使钾长石分解。 相似文献