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jiade-gu

铜虫 (小有名气)

[交流] 求助重量法测SiO2含量的翻译

Silica contents of calcined rice husks and rice husk ashes were determined with gravimetric method. The weighed sample was thoroughly moistened in the platinum crucibles with distilled water. Four drops 1+1 H2SO4, followed by 10 ml HF were added. The mixture was slowly evaporated to dryness over a hot plate in a hood. The crucible was ignited to constant weight at 1200℃ and the weight of the crucible and contents were recorded. The weight of crucible and contents after the HF treatment subtracted from the corresponding weight before HF treatment. Silica was determined as loss on volatilization.
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missyoull

木虫 (小有名气)

jiade-gu(金币+5, 翻译EPI+1):1+1硫酸是指什么呢?谢谢~~~ 2010-05-20 18:47:16
用重量法测定了煅烧后的米壳和米壳灰中的二氧化硅含量。称取一定量的样品,在铂坩埚中用蒸馏水完全浸透。 加入4滴1+1硫酸,之后加入10ml 氢氟酸。用罩子罩住在电热板上蒸干。在1200℃下将坩埚烧至恒重,记录坩埚重量和含量。将HF处理前的重量减去HF处理后的重量,作为烧失量,二氧化硅就被测定出来。

自己翻译的,水平有限,请参考。

[ Last edited by missyoull on 2010-5-20 at 15:36 ]
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2楼2010-05-20 15:23:07
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