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微波溶样ICP-MS测定海产品中十六种元素 总被引:20,自引:1,他引:19
本文利用微波消解ICP-MS法测定了海产品种Na、Mg、Al、P、Cr、Mn、Fe、Ni、Cu、Zn、As、Sr、Mo、Cd、Pb、Hg,并利用国家标准物质贻贝GBW08571验证了方法的准确度,测定值与标准值吻合,同时用多内标法有效地校正了基本干扰。方法简便、快速、准确、可靠。 相似文献
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高效液相色谱法荧光检测测定鱼中痕量硒含量 总被引:4,自引:0,他引:4
,5-benzopiazselenol (NSD)formed by reaction of Se(IV) and 2,3-diaminonaphthalene(DAN) was ex-tracted with cyclohexane and then injected into an HPLC ODS column( 150mm × 5mm)with a moblie phaseof acetonitrile at a flow rate of 1.0mL/min and detected fluorimetrically. The selenium content in fish hasbeen determined by this method with good results and recoveries. The limit of detection was 0.1ng. 相似文献
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人教版八年级物理教材“声现象”一章第三节“动手动脑学物理”中提到了“水瓶琴”,其构造是由八个相同的水瓶中灌入不同高度的水,敲击它们, 相似文献
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人教版八年级物理教材"声现象"一章第三节"动手动脑学物理"中提到了"水瓶琴",其构造是由八个相同的水瓶中灌入不同高度的水,敲击它们,就可以发出"1,2,3,4,5,6,7,i"的声音来(图1). 相似文献
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A hybrid lifting wavelet-like transform scheme is successfully applied to the solution of electric field integral equation using Rao-Wilton-Glisson basis functions. To speed up the matrix transform process, the lifting scheme is adopted. Numerical examples of different three-dimensional perfectly electric conducting objects are considered. Compared with the method of moments, the proposed matrix transform scheme can save considerable CPU time and memory. 相似文献
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