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rossoneripq

新虫 (初入文坛)

[求助] 请问butyl septa 是什么?

各位大侠,今天看文献看到以下论述
Glass bottles of 1250 mL containing 500 mL of diluted centrifuged piggery wastewater (1:4 and 1:8 dilutions with tap water)were inoculated with the target microalga species at initial concentrations ranging from 4 to 6 mg DW L-1 (Dry Weight) and activated sludge bacteria at 3 mg DW -1.The bottles were then flushed with He in order to establish an initial bioreaction environment totally deprived from O2, and immediately closed with butyl septa and sealed with plastic caps. Under these conditions, the biodegradation of piggery wastewater can only proceed driven by photosynthetic oxygenation.
针对上段论述中有几个问题想请教各位大侠
1、butyl septa 是什么东西啊?是将这个缠在玻璃瓶口然后用塑料盖密封的意思吗?
2、玻璃瓶密封之后,里面产气会使得瓶内气压变大,不会有瓶子爆裂的危险吗?或者气压变大影响微生物生长吗?
3、论述中提到He气赶氧气,可以用氮气代替吗?

de Godos I, Vargas VA, Blanco S, González MCG, Soto R, García-Encina PA, et al. A
comparative evaluation of microalgae for the degradation of piggery wastewater
under photosynthetic oxygenation. Bioresour Technol 2010;101:5150–8.
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tansongwen

银虫 (正式写手)

未来科学家

【答案】应助回帖

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rossoneripq: 金币+2, ★★★很有帮助, 谢谢!那这种密封材料中文名叫什么啊 2012-05-15 10:41:39
ymnh: 金币+1, 积极参与讨论,欢迎常来环境版 2012-05-15 12:34:40
1.一种材料:
http://www.labhut.com/20mm-ptfe-grey-butyl-septa.html
密封
2.基本上没什么影响吧
3.一般都是用氮气,氦气我们实验室还搞不到
2楼2012-05-15 09:50:53
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