Mercury

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Typical Pollutants in the Environment • Typical inorganic pollutants Heavy metals: Hg, Cd, Pb, Cr, Zn, Cu, Sn, Ba; As, etc. Inorganic salts: cyanide、Nitrogen salts(ammonium salts 、nitrates、 nitrites)、 sulfides、 fluoride, etc.; Radioactive species:Natural( 3 H, 235 U, 226 Ra)、 Man-made ( 60 Co, 137 Cs)
• Typical organic pollutants PAHs Organic halides:halogenated hydrocarbon 、 PCBs、Dioxins Surface active agent : anionic surfactant 、 cationic surfactant 、 amphoteric surfactant 、 nonionic surfactant
Page 1: Environmental Chemistry Part 5 Typi
Page 5 and 6: Mercury (Hg) 1. Source and Distribu
Page 7 and 8: 2. Transport and Transformation of
Page 9 and 10: Mercury in the air • come from vo
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
Page 58 and 59:
2. hazards 1) Surface active agent
Page 60 and 61:
4) The sterilization of high-concen
Page 62 and 63:
1. Bio-degradation of surface activ
Page 64 and 65:
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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