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4635465銅蟲 (小有名氣)
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[求助]
哪位高人能幫我翻譯一段關(guān)于日本藥典關(guān)于氮測(cè)定法的文字~~~
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4. ?????? ?e??????????ΤΤ?????Τη??????? ????(N??14.01)2??3mg???????????????????????? ???????????_????????????`???饹??A??????????????M??????????饹??????????????????????? ???????z????????饹??????????????7mL?????? ?Τ????饹???????????????飬?^?????(30)1mL?? ???????????????????????????饹?????????? ?????????饹???????????????????????????? ?????????U???r????v???????????饹????????? ??????J???????????????????????????????? ?????^?????(30)???????????????????????? 20mL????????????????????? ?Τ????饹??????餫???????????????????????? ??(??1.08??1)???B?Y????????K??????????(1??25)15mL ???????????`????`??・??????????3?Τ???? ?m????????????????J??????????????????F???? ????????????(2??5)30mL????????????10mL ??????z?????????????????????G?Υ???????????]???? ??????????????80??100mL???????????????????J ????????椫???x???????????????β????????z??? 0.005mol/L?????ζ???2.50???????????????ζ??νK???? ?ξv???????????U??????????ˉ????????????? ?η????????Y???Ф????a?????? 0.005mol/L????1mL??0.1401mg N ????????????????????????????????β?????????? ???????????????????Ф??? ??????????????????????????д????????????~~~лл??~~ |
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新蟲 (初入文壇)
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1. Add the sample (2 to 3 mg as Nitrogen) into Kjeldahl flask(A) 2. Also add 分解促進(jìn)剤 to (A) 3. Some amount of sample adhere to the neck of flask, so wash by small amount water. 4. Add 7 mL of 硫酸 to (A) 5. Mix and add 1 mL of H2O2(過(guò)酸化水素) to (A) quietly. 6. Heat (A) gradually. 硫酸 change from gas to solution on the neck of (A) is good condition. 7. The solution which is in (A) change color from blue to green, and (A)里邊沒(méi)有 carbon, then stop heating. 8. Add small amount of H2O2 to (A), and heat again. 9. After stop heating, add 20mL of water to (A) to cool. 10. Equip 蒸留裝置(図1.08-1) with another flask. * 蒸留裝置(図1.08-1) need to wash by 水蒸気. 11. Add 15mL of Boric-acid solution(ホウ酸溶液(1→25)) to (K) 12. Add 3 drops of Bromocresol green, Methyl red solutions, and add water. 13. Immersed in this solution(12) the cooler bottom of the (J) 14. Add 30mL of NaOH(2→5) from Funnel(F), and wash by water. 15. Close pinch cock with rubber tube(G). 16. Distillate and get 80 to 100 mL of 留液. 17. Bottom of (J) take off from surface of the solution, and wash by small amount water bottom of (J). 18. Titrate by 0.005mol/L of 硫酸 <2.50> *change color green → light gray blue → Light gray red purple (this is end point of titration). 19. Conduct control test using same method. and calibrate the value of sample. 0.005mol/L硫酸1mL=0.1401mg N |
銅蟲 (小有名氣)
新蟲 (初入文壇)
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