Mercury

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3) Hg: the only metal in the form of liquid under normal temperature;can dissolve many metals and form amalgam ( 汞齐 ) (Na, K, Au, Ag, Zn, Cu, Sn, Pb); 4) Covalence( 共价性 ): Mercury compounds>Znic compounds The high volatility, mobility and covalence of mercury and its compounds make easy their transport and distribution in the environment.
Mercury in the air • come from volatilization of mercury and its compounds • The volatility and forms of mercury compounds are closely related to their solubility in water, surface absorption and atmospheric relative humidity (RH), etc. p300 chart 6-1 • Due to their high volatility, mercury compounds can be easily released into the air through transpiration( 蒸腾作用 ) of soil and plants. • Mercury in the air are mostly absorbed onto particulate matters( 颗粒物 ) • Gaseous mercury finally enter into soil and marine sediments.
Page 1 and 2: Environmental Chemistry Part 5 Typi
Page 3 and 4: • Typical organic pollutants PAHs
Page 5 and 6: Mercury (Hg) 1. Source and Distribu
Page 7: 2. Transport and Transformation of
Page 11 and 12: 4) Hg 2+ can easily form complex co
Page 13 and 14: Mercury in the soil • Over 95% of
Page 15 and 16: The methylation process of mercury
Page 17 and 18: Dimethyl mercury Under anaerobic co
Page 19 and 20: Transport and Transformation of Mer
Page 22 and 23: . Hazards of Mercury Pollution •
Page 24 and 25: . Prevention of Mercury pollution
Page 26 and 27: Environmental Chemistry Part 5 Typi
Page 28 and 29: asic characteristics of PCBs 1) Hig
Page 30 and 31: Transport and transfomation of PCBs
Page 32 and 33: The atmosphere is purified of PCBs
Page 34 and 35: The transport of PCBs in water •
Page 36 and 37: The transformation ways of PCBs in
Page 38 and 39: Degradation of PCBs • Substrate s
Page 40 and 41: 1) Sealing and storage • To seal
Page 42 and 43: Fusion medium method( 熔融介
Page 44 and 45: 4) Biodegradation • A potential m
Page 46 and 47: surface active agent • Definition
Page 48 and 49: Classification and properties of su
Page 50 and 51: 2. Cationic surfactant • The hydr
Page 52 and 53: 4. Nonionic surfactant • Nonionic
Page 54 and 55: 2) the relative position of hydroph
Page 56 and 57: 4) hydrophobic groups • The order
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2. hazards 1) Surface active agent
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4) The sterilization of high-concen
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1. Bio-degradation of surface activ
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4) Oxidation of aromatic compounds
Page 66 and 67:
2) Anionic surfactant • Anionic s
Page 68 and 69:
The relationship between molecular
Page 70 and 71:
3 steps for the photocatalysic degr
Page 72:
One of the key points in the resear
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Mercury

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