【正文】
。g39。si:zj?m] 銫 (Cs) ? 87. Francium [39。t230。 ? Inanic particles Metal oxides ?Radioactive particles Radon ?Organic particles PAH (polycyclic aromatic hydrocarbons): Benzo[a]pyrene Unit 6 Atmospheric Particles(particulates) group 1A. “Alkali metals” (Li, Na, K, Rb, Cs, Fr) ? 3. Lithium [39。 particles with diameter of 10 micrometres or less), fine particles (diameter of micrometres or less), ultrafine particles, and soot. Unit 6 Atmospheric Particles(particulates) Terms ? TSP: Total suspended particulate matter ? RSP: Respirable suspended particulate matter ? PM10: Particulate matter of less than 10 um。 equivalent to RSP. ? : Particulate matter of less than um ? aerosol: suspension in air of solid or liquid particles below 100?m in diameter Particulates play an important role in atmospheric chemistry. Neutralization reactions, which occur most readily in solution, may take place in water droplets suspended in the atmosphere. Unit 6 Atmospheric Particles(particulates) 中和反應(yīng)可以發(fā)生在懸浮在大氣中的水滴上,這種反應(yīng)通常在溶液中最容易發(fā)生。liθi:?m] 鋰 ? 11. Sodium [39。si?m] 鉀 kalium [39。fr230。ni:zi?m] (Mg) ,鎂 ? 20. Calcium [39。b??ri?m] (Ba),鋇 ? 88. Radium [39。meini?m] 鍺 Ge ? 50. Tin [tin] Stannum [39。flu?ri:n] (F), 氟 ? 17. Chlorine [39。230。kript?n] (Kr), 氪 ? 54. Xenon [39。min?m]鋁 Al Aluminium [230。f?sf?r?s] 磷 P ?Oxygen family, oxygen group , Group 16, Oxygen [39。k?ub?:lt] 鈷 Co, ? Nickel [39。tn?m] 鉑 Pt group Ⅵ ? Chromium [39。m230。?:r?m] (Au),金 group 2B (group 12) ? Zinc [zi?k], Zn ? Cadmium [39。drɑ:d?ir?m] 汞 Nomenclature of Inanic Compounds ( 無機(jī)化合物命名法 ) 1. Names of Cations( 陽離子的命名 ) 元素名稱 + ion * 如果某元素能形成一種以上的陽離子 , 則使用斯托克數(shù)字 ( Stock number) 來表示其所帶電荷 ( 只形成一種陽離子的不必用 ) 。 3. tri。 7. hept(a) (sept(a))。5H2O: copper( II) sulfate pentahydrate 科技英語中常見分子式及化學(xué)反應(yīng)式讀法 ?(1)讀分子式時(shí),字母部分均按字母名稱讀出。eitf siks] ?H2SO4: L39。si: double band 39。θ?:mik] reaction 放熱反應(yīng) ?endothermic [39。 Formation and Composition of Innic Particles ? The position of particulate matter reflects both the elemental position of its source and chemical reactions that may change the position. ? 顆粒物的組成不僅反映了顆粒物來源的元素組成,也表明了可能引起組分改變的化學(xué)反應(yīng)。 Organic Particles in the Atmosphere ? The most often cited example of a PAH pounds is benzo[a] pyrene, a pound that the body can metabolize to a carcinogenic form: benzo(a) pyrene. ? 苯并芘是最常引用的多環(huán)芳烴,這種化合物能被身體代謝成為致癌物形式的苯并芘。 Homew