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lulufantasy新蟲(chóng) (小有名氣)
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[求助]
反應(yīng)器中的CO2如何收集,而又不會(huì)導(dǎo)致反應(yīng)器內(nèi)微生物缺氧~
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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. 請(qǐng)問(wèn)文獻(xiàn)中CO2是如何收集的~如果是密封裝置的話(huà),那么O2就會(huì)耗盡~ |
鐵桿木蟲(chóng) (著名寫(xiě)手)

新蟲(chóng) (小有名氣)
鐵桿木蟲(chóng) (著名寫(xiě)手)

新蟲(chóng) (小有名氣)
鐵桿木蟲(chóng) (著名寫(xiě)手)
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我是這樣理解的,如果好氧微生物的需氧大,那么你堿液很快就會(huì)吸收飽和,那么你取樣(或者說(shuō)換堿液+換氣)的頻率就會(huì)很快,當(dāng)然這其中的誤差也就較大。 比較好的方案是,土樣在一定的范圍內(nèi),不能太多,而這個(gè)jar相當(dāng)很大,所以在你CO2的收集過(guò)程中,原本罐里的氧氣是足夠多的。而因?yàn)橥亮可伲珻O2釋放慢,所以下一次開(kāi)罐換堿液時(shí)又能夠有足夠的氧氣進(jìn)入到j(luò)ar里供里下一次使用。 不知道這樣解釋你是否理解? |

新蟲(chóng) (小有名氣)
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