A preliminary experimental study of the boron concentration in vapor and the isotopic fractionation of boron between seawater and vapor during evaporation of seawater
A laboratory experiment was undertaken to investigate the behaviour of boron at the seawater-air interface under air flow conditions. Dried air at 25 and 35°C was passed over or bubbled through seawater at the same temperature. A combination of ice-chilled condensers and KOH impregnated cellulose fi...
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| Veröffentlicht in: | Science China. Chemistry 2001-10, Vol.44 (5), p.540-551 |
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| container_end_page | 551 |
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| container_issue | 5 |
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| container_title | Science China. Chemistry |
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| creator | Xiao, Yingkai Swihart, G. H. Xiao, Yun Vocke, R. D. |
| description | A laboratory experiment was undertaken to investigate the behaviour of boron at the seawater-air interface under air flow conditions. Dried air at 25 and 35°C was passed over or bubbled through seawater at the same temperature. A combination of ice-chilled condensers and KOH impregnated cellulose fibre filters was used to collect boron from the reacted air. When air stripped of boron was passed over the seawater, boron was found in the reacted air, and its concentration was higher in the higher temperature test. In the tests where air was bubbled through seawater the concentration of boron in the reacted air was directly proportional to the air flow rate. In this situation the boron in the reacted air was mainly introduced as a spray of microdroplets. Isotopic analysis of the collected boron in the non-bubbled tests yields fractionation factors which demonstrate that the lighter isotope,10B, is enriched in the reacted air. The size of the fractionation changes with temperature, ruling out a purely kinetic effect. |
| doi_str_mv | 10.1007/BF02880685 |
| format | Article |
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In the tests where air was bubbled through seawater the concentration of boron in the reacted air was directly proportional to the air flow rate. In this situation the boron in the reacted air was mainly introduced as a spray of microdroplets. Isotopic analysis of the collected boron in the non-bubbled tests yields fractionation factors which demonstrate that the lighter isotope,10B, is enriched in the reacted air. The size of the fractionation changes with temperature, ruling out a purely kinetic effect.</description><subject>Air flow</subject><subject>Boron</subject><subject>Cellulose fibers</subject><subject>Condensers (liquefiers)</subject><subject>Fractionation</subject><subject>Seawater</subject><issn>1006-9291</issn><issn>1674-7291</issn><issn>1862-2771</issn><issn>1869-1870</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2001</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNpFkctOwzAQRSMEEqWw4QsssUMKTOw8nGWpKCBVYtN95NgTcNXawXYo_BDfidvw2Hg8mnPvSHeS5DKDmwygur1bAOUcSl4cJZOMlzSlVZUdxz9Amda0zk6TM-_XAHkOHCbJ14z0Djd6q41wnwQ_enR6iyaIDfFhUJ_EdiS8Immts4ZIa2QcOhF07LQh76K3jgijDpD2NtheS9I5IffIyEWLUd5i2CEa4lHsRMBROFqowWnzQvDQ_cl-wfPkpBMbjxc_dZqsFver-WO6fH54ms-WqWSUhbRiXIIoq4KrUtSAXMkKVasywRjNS4Y5VVXOy_jQAoEzBQXL645LCUBbNk2uRtve2bcBfWjWdnAmbmxidDFOShmP1PVISWe9d9g1fcwsxtdk0OzP0PyfgX0D5Y59xg</recordid><startdate>20011001</startdate><enddate>20011001</enddate><creator>Xiao, Yingkai</creator><creator>Swihart, G. 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Chemistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Xiao, Yingkai</au><au>Swihart, G. H.</au><au>Xiao, Yun</au><au>Vocke, R. D.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A preliminary experimental study of the boron concentration in vapor and the isotopic fractionation of boron between seawater and vapor during evaporation of seawater</atitle><jtitle>Science China. Chemistry</jtitle><date>2001-10-01</date><risdate>2001</risdate><volume>44</volume><issue>5</issue><spage>540</spage><epage>551</epage><pages>540-551</pages><issn>1006-9291</issn><issn>1674-7291</issn><eissn>1862-2771</eissn><eissn>1869-1870</eissn><abstract>A laboratory experiment was undertaken to investigate the behaviour of boron at the seawater-air interface under air flow conditions. Dried air at 25 and 35°C was passed over or bubbled through seawater at the same temperature. A combination of ice-chilled condensers and KOH impregnated cellulose fibre filters was used to collect boron from the reacted air. When air stripped of boron was passed over the seawater, boron was found in the reacted air, and its concentration was higher in the higher temperature test. In the tests where air was bubbled through seawater the concentration of boron in the reacted air was directly proportional to the air flow rate. In this situation the boron in the reacted air was mainly introduced as a spray of microdroplets. Isotopic analysis of the collected boron in the non-bubbled tests yields fractionation factors which demonstrate that the lighter isotope,10B, is enriched in the reacted air. The size of the fractionation changes with temperature, ruling out a purely kinetic effect.</abstract><cop>Heidelberg</cop><pub>Springer Nature B.V</pub><doi>10.1007/BF02880685</doi><tpages>12</tpages></addata></record> |
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| subjects | Air flow Boron Cellulose fibers Condensers (liquefiers) Fractionation Seawater |
| title | A preliminary experimental study of the boron concentration in vapor and the isotopic fractionation of boron between seawater and vapor during evaporation of seawater |
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