摘要本文建立了用硝酸硫酸预处理除去大量的铜，王水溶解，火焰原子吸收法测定粗铜中金的分析方法。
The gold in blister copper sample was pretreated with nitric acid - sulphuric acid to remove copper, digested with aqua , and determined by flame atom absorbance spectrometry.
对香椿亚硝酸盐的除去方法进行了讨论，选择香椿漂烫和添加抗坏血酸、柠檬酸、茶多酚可以有效去除亚硝酸盐的含量。
In order to weeding out nitrite in Chinese toon, choose water blanching and accretion with ascorbic acid, lemon acid and tea multi-hydroxybenzene.
在氨催化分解、水煤气转化、除去水中硝酸盐的反应中使用钯膜也得到了令人满意的效果。
The satisfying results were also obtained in the reactions for catalytic decomposition of ammonia, water-gas shift and nitrate removal from wate…
用亚硝酸钠和脲素除去外来的氧化剂后，以碘量法测定，全部操作可在几分钟内完成。
The samples are dissolved in aqueous solution of sulphuric acid or alkalis which can be heated if necessary, and the solution thus formed is treated rapidly with large excess of oxidant.
用亚硝酸钠和脲素除去外来的氧化剂后，以碘量法测定，全部操作可在几分钟内完成。
The samples are dissolved in aqueous solution of sulphuric acid or alkalis which can be heated if necessary, and the solution thus formed is treated rapidly with large excess of oxidant.
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