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| 1 | Potential release of hydrogen fluoride from domestic coal in endemic fluorosis area in Guizhou,China显示文摘Almost half of the total rural area of Guizhou Province and many regions within the 11 adjacent provinces in southwestern China have a long history(at least 70 years) of endemic fluorosis,including dental fluorosis and osteofluorosis along with its associated deformities and disabilities.Over decades of research,this specific type of endemic fluorosis has been defined as coal-burning fluorosis,which is distinct from drinking-water fluorosis.It is generally acknowledged that indoor burning and combustion of high-fluorine coal leads to food contamination,and fluorine then enters the human body.However,the exact chemical form of fluorine during its release and transfer to the body is still unknown.In the present study,21 domestic coal samples from outcrop and semi-outcrop coal collected in five villages with fluorosis were analyzed by time-of-flight secondary ion mass spectrometry(TOF-SIMS).The total mass fraction of sulfur in the samples ranged from 0.24%-5.58% and total fluorine content ranged 90.2-149.2 mg/kg.H3O+,H2SO4+ and HSO4-were detected in the samples by TOF-SIMS,which indicated that sulfuric acid hydrate(H2SO4.H2O) was present in the samples.F-was detected in all of these,which suggested the samples contain ionic fluorine compounds.Under certain circumstances,such as heating or burning,the prevalence and coexistence of the acid(H2SO4.H2O) and base(F-) would lead to a neutralization reaction producing volatile hydrogen fluoride(HF,bp = 19.5℃).This would be the chemical form of fluorine released from the coal.Further studies using HF and SO2 test tubes on headspace gas over coal samples heated to 200℃ in the laboratory and on headspace gas over stoves or chimney tops at rural residences confirmed the release of HF. | LIANG HanDong LIANG YanCi GARDELLA Joseph A. Jr HE Ping YATZOR Brett p | 2011 | Chinese Science Bulletin2011，56，22： | 12 |
| 2 | A comparative study of the effects of the use of mul-timedia on listening comprehension显示文摘 | Brett P | 1997 | System1997，25，1： | 1 |
| 3 | Functional gene polymorphisms in aggressive and chronic periodontitis 显示文摘 | BRETT P M ZYGOGIANNI P GRIFFITHS G S | 2005 | J Dent Res2005，84，12： | 1 |
| 4 | The role of mammalian cardiac t-tubules in excitation-contraction coupling:experimental andcomputational approaches显示文摘 | Orchard CH Pásek M Brette F | | 0，，05： | 1 |
| 5 | Simulation of methane autoignition in a rapid compressionmachine with creviced pistons 显示文摘 | BRETT L MACNAMARA J MUSCH P | 2001 | Combustion andFlame2001，124，12： | 1 |
| 6 | Functional gene polymorphisms in aggressive and chronic periodontitis显示文摘 | Brett PM Zygogianni P Griffiths GS | 2005 | J Dent Res2005，84，12： | 1 |
| 7 | Sequence, cycles, and basin dynamics in the Silurian of the Appalachian foreland basin 显示文摘 | BRETT C E GOODMAN W M LODUCA S P | 1990 | Sedimentary Geology1990，69，34： | 1 |
| 8 | Functional domains of the SYT and SYT-SSX synovial sarcoma translocation proteins and co-localization with the SNF protein BRM in the nucleus显示文摘 | Thaete C Brett D Monaghan P | 1999 | Hum Molec G enet1999，8，： | 1 |
| 9 | New synchronous orbits using the geomagnetieLorenz force显示文摘 | Brett S Mason A P | 2007 | Journal of Guidance Control and Dynamics2007，30，6： | 1 |
| 10 | Functional gene polymor- phisms in aggressive and chronic periodontitis 显示文摘 | Brett PM Zygogianni P Griffiths GS | 2005 | J Dent Res2005，84，： | 1 |
| 11 | Use of temperature programming to im-prove resolution of inorganic anions,haloacetic acids and oxyhalides in drinking water by suppressed ion chromatography显示文摘 | LEON B BRETT P | 2005 | J Chromatography A2005，1072，2： | 1 |
| 12 | Missile longitudinal autopilots: Comparison of multiple three loop topotogies显示文摘 | Curtis P Mraeek D Brett R | 2005 | AIAA Guidance Navigation and Control Conference and Exhibit2005，6380，： | 1 |
| 13 | Solubility of a resinmodified glass ionomer cement显示文摘 | Brett M Kevin J Theodove P | 1998 | ASDC J Dent Child1998，9，： | 1 |
| 14 | An automated handling system for soft compact shaped non-rigid products 显示文摘 | Stone R S Brett P N Evans B S | 1998 | Mechatronics1998，8，2： | 1 |
| 15 | A Genre Analysis of the Results Section of Sociology Articles显示文摘 | Brett P | | 0，，01： | 1 |
| 16 | The type II O-antigenic polysaccharide moiety of Burkholderia pseudomallei li- popolysaccharide is required for serum resistance and virulence显示文摘 | DESHAZER D BRETT P J WOODS D E | 1998 | Mol Microbiol1998，30，： | 1 |
| 17 | An Automated Han dling System for Soft Compact Shaped Non-rigid Prod- ucts显示文摘 | Stone R S Brett P N Evans B S | 1998 | Mechatronics1998，8，2： | 1 |
| 18 | Reducing gain-loss asymmetry: A virtual reality choice experiment valuing land use change 显示文摘 | Bateman I J Brett H Day Andrew P Jones | 2009 | Journal of Environmental Economics and Management2009，58，： | 1 |
| 19 | International entrepreneurship and geographic location: an empirical examination of new venture internationalization 显示文摘 | STEPHANIE A FERNHABER BRETT ANITRA GILBERT PATRICIA P McDOUGALL | 2008 | Journal of International Business Studies2008，39，： | 1 |
| 20 | A genre analysis of the results section of sociology articles 显示文摘 | Brett P | 1994 | English for Specifw Purposes1994，，1： | 1 |
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