Capillary method of gas sampling under constant flow rate for the measurement of time average concentration of hydrocarbons in the atmosphere
Steady flow rate of air through a capillary of proper diameter and length was observed, when one end of a capillary was exposed to air while another end was connected to the vessel kept at the pressure ranging from 0 to 0.3 atm. Time average concentration of the substance in air can be obtained by m...
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| Veröffentlicht in: | BUNSEKI KAGAKU 1986/02/05, Vol.35(2), pp.128-133 |
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| Format: | Artikel |
| Sprache: | eng ; jpn |
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| container_end_page | 133 |
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| container_issue | 2 |
| container_start_page | 128 |
| container_title | BUNSEKI KAGAKU |
| container_volume | 35 |
| creator | ICHINOSE, Masao YASUOKA, Takashi SAITO, Akira TAKANO, Jiro MITSUZAWA, Shunmei ZIMMERMAN, Patrick R. |
| description | Steady flow rate of air through a capillary of proper diameter and length was observed, when one end of a capillary was exposed to air while another end was connected to the vessel kept at the pressure ranging from 0 to 0.3 atm. Time average concentration of the substance in air can be obtained by measuring concentrations of the substance collected. To confirm this point the concentrations of ethane and benzene collected through a capillary under time-dependent concentrations were analyzed. The measured average concentration agreed well with calculated one. Such a sampling method of air may be effectively applied to obtain time average concentrations of the gaseous substances in the atmosphere. A chromatogram of actual atmospheric sample was shown as an example. |
| doi_str_mv | 10.2116/bunsekikagaku.35.128 |
| format | Article |
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Time average concentration of the substance in air can be obtained by measuring concentrations of the substance collected. To confirm this point the concentrations of ethane and benzene collected through a capillary under time-dependent concentrations were analyzed. The measured average concentration agreed well with calculated one. Such a sampling method of air may be effectively applied to obtain time average concentrations of the gaseous substances in the atmosphere. 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Time average concentration of the substance in air can be obtained by measuring concentrations of the substance collected. To confirm this point the concentrations of ethane and benzene collected through a capillary under time-dependent concentrations were analyzed. The measured average concentration agreed well with calculated one. Such a sampling method of air may be effectively applied to obtain time average concentrations of the gaseous substances in the atmosphere. 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Time average concentration of the substance in air can be obtained by measuring concentrations of the substance collected. To confirm this point the concentrations of ethane and benzene collected through a capillary under time-dependent concentrations were analyzed. The measured average concentration agreed well with calculated one. Such a sampling method of air may be effectively applied to obtain time average concentrations of the gaseous substances in the atmosphere. A chromatogram of actual atmospheric sample was shown as an example.</abstract><cop>Tokyo</cop><pub>The Japan Society for Analytical Chemistry</pub><doi>10.2116/bunsekikagaku.35.128</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record> |
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| identifier | ISSN: 0525-1931 |
| ispartof | BUNSEKI KAGAKU, 1986/02/05, Vol.35(2), pp.128-133 |
| issn | 0525-1931 |
| language | eng ; jpn |
| recordid | cdi_proquest_journals_1448911488 |
| source | J-STAGE Free; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Freely Accessible Japanese Titles; Free Full-Text Journals in Chemistry |
| subjects | analysis of hydrocarbon by gas chromatography measurement of average concentration of hydrocarbon for period of sampling unifrom flow rate for sampling by vacuum vessel and capillary |
| title | Capillary method of gas sampling under constant flow rate for the measurement of time average concentration of hydrocarbons in the atmosphere |
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