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jiade-gu銅蟲(chóng) (小有名氣)
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[交流]
求助重量法測(cè)SiO2含量的翻譯
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| 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
木蟲(chóng) (小有名氣)
- 翻譯EPI: 3
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jiade-gu(金幣+5, 翻譯EPI+1):1+1硫酸是指什么呢？謝謝~~~ 2010-05-20 18:47:16
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用重量法測(cè)定了煅燒后的米殼和米殼灰中的二氧化硅含量。稱取一定量的樣品，在鉑坩堝中用蒸餾水完全浸透。 加入4滴1+1硫酸，之后加入10ml 氫氟酸。用罩子罩住在電熱板上蒸干。在1200℃下將坩堝燒至恒重，記錄坩堝重量和含量。將HF處理前的重量減去HF處理后的重量，作為燒失量，二氧化硅就被測(cè)定出來(lái)。 自己翻譯的，水平有限，請(qǐng)參考。  [ Last edited by missyoull on 2010-5-20 at 15:36 ] |
2樓2010-05-20 15:23:07
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