PMID- 25483969
OWN - NLM
STAT- MEDLINE
DCOM- 20150916
LR  - 20240109
IS  - 1614-7499 (Electronic)
IS  - 0944-1344 (Linking)
VI  - 22
IP  - 9
DP  - 2015 May
TI  - Study on the kinetic characteristics of trace harmful gases for a 
      two-person-30-day integrated CELSS test.
PG  - 7020-4
LID - 10.1007/s11356-014-3743-5 [doi]
AB  - A two-person-30-day controlled ecological life support system (CELSS) integrated 
      test was carried out, and more than 30 kinds of trace harmful gases including 
      formaldehyde, benzene, and ammonia were measured and analyzed dynamically. The 
      results showed that the kinds and quantities of the trace harmful gases presented 
      a continuously fluctuating state during the experimental period, but none of them 
      exceed the spacecraft maximum allowable concentration (SMAC). The results of the 
      Pre-Test (with two persons without plants for 3 days) and the Test (with two 
      persons and four kinds of plants for 30 days) showed that there are some notable 
      differences for the compositions of the trace harmful gases; the volatile organic 
      compounds (VOCs) such as toluene, hexane, and acetamide were searched out in the 
      Pre-Test, but were not found in the Test. Moreover, the concentrations of the 
      trace harmful gases such as acetic benzene, formaldehyde, and ammonia decreased 
      greatly in the Test more than those in the Pre-Test, which means that the plants 
      can purify these gases efficiently. In addition, the VOCs such as carbon 
      monoxide, cyclopentane, and dichloroethylene were checked out in the Test but 
      none in the Pre-Test, which indicates that these materials might be from the 
      crew's metabolites or those devices in the platform. Additionally, the ethylene 
      released specially by plants accumulated in the later period and its 
      concentration reached nearly ten times of 0.05 mg m(-3) (maximum allowed 
      concentration for plant growth, which must have promoted the later withering of 
      plants). We hoped that the work can play a referring function for controlling 
      VOCs effectively so that future more CELSS integrating tests can be implemented 
      smoothly with more crew, longer period, and higher closure.
FAU - Guo, Shuangsheng
AU  - Guo S
AD  - National Key laboratory of Human Factors Engineering, China Astronaut Research 
      and Training Center, Beijing, 100094, China, guoshuangsheng@sina.com.
FAU - Ai, Weidang
AU  - Ai W
FAU - Fei, Jinxue
AU  - Fei J
FAU - Xu, Guoxin
AU  - Xu G
FAU - Zeng, Gu
AU  - Zeng G
FAU - Shen, Yunze
AU  - Shen Y
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20141209
PL  - Germany
TA  - Environ Sci Pollut Res Int
JT  - Environmental science and pollution research international
JID - 9441769
RN  - 0 (Ethylenes)
RN  - 0 (Gases)
RN  - 0 (Noxae)
RN  - 0 (Volatile Organic Compounds)
RN  - 7664-41-7 (Ammonia)
RN  - 7U1EE4V452 (Carbon Monoxide)
RN  - 91GW059KN7 (ethylene)
RN  - YY9FVM7NSN (Hydrogen Sulfide)
SB  - IM
MH  - Ammonia/analysis
MH  - Carbon Monoxide/analysis
MH  - Cichorium intybus
MH  - *Ecological Systems, Closed
MH  - Ethylenes/analysis
MH  - Gases/*analysis
MH  - Humans
MH  - Hydrogen Sulfide/analysis
MH  - Kinetics
MH  - Lactuca
MH  - Noxae/*analysis
MH  - *Plants
MH  - Volatile Organic Compounds/analysis
EDAT- 2014/12/09 06:00
MHDA- 2015/09/17 06:00
CRDT- 2014/12/09 06:00
PHST- 2014/07/15 00:00 [received]
PHST- 2014/10/17 00:00 [accepted]
PHST- 2014/12/09 06:00 [entrez]
PHST- 2014/12/09 06:00 [pubmed]
PHST- 2015/09/17 06:00 [medline]
AID - 10.1007/s11356-014-3743-5 [doi]
PST - ppublish
SO  - Environ Sci Pollut Res Int. 2015 May;22(9):7020-4. doi: 
      10.1007/s11356-014-3743-5. Epub 2014 Dec 9.