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lulufantasy

新虫 (小有名气)

[求助] 反应器中的CO2如何收集,而又不会导致反应器内微生物缺氧~

The samples of 45 g soil or loess material with or without BC were incubated in 250-mL Schott jars for 1181 days at 20 C and 70% of WHC. To obtain 70% of WHC, 9.45 and 8.82 mL distilled water were added to soil and loess, respectively. During the incubation, the CO2 evolved from the soil or loesswas trapped in 3 mL of 1.0 M NaOH solution placed in small caps into the incubation jars. Periodically, the NaOH with trapped CO2 was sampled and replaced with new NaOH.
请问文献中CO2是如何收集的~如果是密封装置的话,那么O2就会耗尽~
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lulufantasy

新虫 (小有名气)

引用回帖:
4楼: Originally posted by fayfeifei at 2012-05-28 22:41:46
你那个jar要密封就不会扩散出来,都会被碱液吸收的。
然后像你文献里说的那样,每次取样就换一个新的碱液,这个CO2的释放应当是相当慢的,所以你取样的时候动作麻利一些,不会有太多的误差损失的~...

可是如果密封的话,里面的好氧微生物会不会缺氧~
5楼2012-05-29 21:02:28
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fayfeifei

铁杆木虫 (著名写手)

【答案】应助回帖

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感谢参与,应助指数 +1
gaofeng925: 金币+1, 积极 2012-05-27 12:40:12
在培养土样的 Schott jars 里放一个小烧杯,烧杯里放NaOH吸收CO2
这是测土壤呼吸量?
To be a true scientist!
2楼2012-05-27 11:59:30
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lulufantasy

新虫 (小有名气)

引用回帖:
2楼: Originally posted by fayfeifei at 2012-05-27 11:59:30
在培养土样的 Schott jars 里放一个小烧杯,烧杯里放NaOH吸收CO2
这是测土壤呼吸量?

那CO2不会扩散到空气中吗
3楼2012-05-28 20:43:18
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fayfeifei

铁杆木虫 (著名写手)

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stormxuhao: 金币+1, 积极参与 2012-05-29 09:42:04
引用回帖:
3楼: Originally posted by lulufantasy at 2012-05-28 07:43:18
那CO2不会扩散到空气中吗...

你那个jar要密封就不会扩散出来,都会被碱液吸收的。
然后像你文献里说的那样,每次取样就换一个新的碱液,这个CO2的释放应当是相当慢的,所以你取样的时候动作麻利一些,不会有太多的误差损失的~
To be a true scientist!
4楼2012-05-28 22:41:46
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