Mercury

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<strong>Mercury</strong> in the water • The existing forms of mercury compounds and their transport and transformation in the environment are directly related to solubility in water. 1) Hg solubility at 25 o C: 60 mg/L in pure water,25 mg/L in deoxidized water; 2) Water-soluble salts:HgCl 2 , HgSO 4 , Hg(NO 3 ) 2 , Hg(ClO 3 ) 2 ; 3) Organic mercury: water insoluble: diethyl mercury( 乙基汞 ) (CH 3 CH 2 ) 2 Hg and ethylmercuric chloride( 氯化乙基汞 )CH 3 CH 2 HgCl; slightly soluble:mercury phenylacetate( 乙酸苯基汞 )PhHgAc; mercury acetate( 乙酸汞 )HgAc 2 has the highest solubility.
4) Hg 2+ can easily form complex compounds ( 络合物 ) in the water,ligancy( 配位数 ) is commonly 2 or 4; Hg 2 2+ are much less likely to form complex compounds than Hg 2+ .
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 and 8: 2. Transport and Transformation of
Page 9: Mercury in the air • come from vo
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
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4) The sterilization of high-concen
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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
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One of the key points in the resear
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Mercury

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