Title: Email: yangchg@njau.edu.cn
1??? ??????????
- Email yangchg_at_njau.edu.cn
2??
- ????
- ????????????
- pH
- Eh(??????)
- ????
- ????
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- ??
3- ?????????
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4??? ???????
- ?????
- ?????
- ??????????
- ????????
- ??????(0.5ppm)?????????
- ??????(0.10.5ppm)????????
- ??????(0.1ppm)??????
5B
6?? ??????????
- ????
- ??????
- ??????????????
- ?????
- ??
- ?(???,????)
- ????
7???????
???????? (?)????? ?????????????????,??,??????????
????? ??????????????(anthraquinone)????,?????(qui
nalizarin)??????????????? ?????????? 1960????????
??????????????1930??,??1950??????,????????????????
??????????????(curcumin)??????????????????????????
????,??????????????????
8 1970??,Goldman?(1975)??????????????,?????????????
??????,?????????????,?? ????????????(?620nm),????
????????????( ?550nm),???????????????? ?????BF??
???,??????????,?????????????? ???? 1970????,?????
????????????? ?????????????H???????Schiff?????????
???????????
9(?)??????? ????????,????????????????60????
?????????????? ?????????????????????????,????????
?????????????????,????????????? ?????II??????????
???????,????????????????????????? ???????????????
??????????,????????,?pH????????,??????????????????
?????????0.1-1.0mg/kg?????,??????????????????????
10(?)????? AAS?ICP-AES????????? AAS????????-??-1,
3??????????-??-1,3????????, ?N2O-H2?N2O-C2H2????
?????? ICP-AES????,????????????????????
11?? ???????
???
H?(8-??-1-??- 3,6-???)
?????
12?pH5.15.3???-??????? 3???
H3BO3?????? ???0.051ppm B,????410420nm?
?????F, Al3, Fe3, Cu2 ??????23?,?????,?????
??????2h. ????????,???? ???????? ?????????????
?????
13????????????
14??pH????????????
pH n ?? SD CV ?????
6.5 12 35.71 0.465 1.30 A
7.0 12 32.10 1.54 4.80 B
6.0 12 29.99 1.61 5.37 B
5.5 12 15.41 1.75 11.35 C
5.0 12 5.585 0.70 12.50 D
15EDTA??????????
??SAS??,EDTA????????1mg/kg????????????????,????An
drade(1988)???????
16(No Transcript)
17(?)??????
- ???????????????????????????????(Rosocyanin),???
??????????,??????550nm?
HO-
18???0.00140.06ppm B,????10420nm?
???????? ??????553??????12h? ??????? ???????
,?????????????,?????????????? ???????????????????
?????????
19??? ?????????
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- ???????????????
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- ??-???-???-??
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20Cu
21(No Transcript)
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30????????????????
- ??????
- ??
- 0.1mol/L ??
- ???-??
- ???-??
- DTPA-TEA-???
- EDTA-???
- DTPA-????
- ???
- ???????????????
31????????????
??? DTPA Mehlich-I?III DTPA-AB?0.1mHCl
Cu 0.51.0 0.81.0 1.01.5
Zn 0.2 0.5 0.30.5
?Mehlich-III?(0.015mol/L NH4F-0.001moL/L
EDTA-20g/L NH4NO3-11.5mL/L ??-0.8mL/L??-pH2.5)
DTPA-AB? ????????????????????
32Mehlich-III?????(?????)
- P30 mg/dm3
- K47 mg/dm3
- Mg122 mg/dm3
- Mn4 8mg/dm3 ?CEC?10
- Zn1 mg/dm3
- Cu0.5 mg/dm3
?Buondonno?(1992)Olson-P?Mehlich-III-P??????? ???
?Mehlich-III-P-0.432.72 Olson-P, ?????
Mehlich-III-P 0.5911.42 Olson-P
33???????????
34??? ?????????
- ???????
- ???
- ???
- ????
- ???????
- ?????????
- 1M?????(???2.3ppm)
- 1M?????0.1????(???2565ppm)
- ????
- ???????
- AAS?
- ICP?
35??? ???????
- ???????????(???????)
- ?????????
- Tamm??(pH3.3??-???) (???0.10.2ppm)
- ??
- DTPA-AB
- ?????
- ????
- ????(???)???
- ?????
- ???-AAS?
- ICP?
36(No Transcript)
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38???????
- ????
- ???????,??????NH4SCN(?KSCN)???,???????????
- 2H2MoO4 SnCl2 2HCl ? 2HMoO3 SnCl4 2H2O
- ????CNS-??,????????,Mo(CNS)5?????(
?????????)??????????????470nm? ?????0.515?gmL-1
? - ????????????????????????,Mo5?CNS-???????????
- Mo5 3CNS- Mo(CNS)32
- Mo(CNS)32 2CNS- Mo(CNS)5 (???)
- Mo(CNS)5 CNS- Mo(CNS)6-
39???????
- ????
- ?????,?SnCl2??????????0.81.7molL-1H,????,???,??
???????,???????? - ???????SnCl2??,????1.02.5 molL-1H?
- ??Fe3????CNS-?????????,??????,???Fe3???,???????,
?????????????,???????????, - ????,????????
- ???? (SnCl2)??????
- ?????????????? ?
- ????????????? ?
40?????????
- ???-????(????)???,???????????????????????,??????,?
??????????,????,??????????,????????????,????? - Mo6 ???? e Mo5????
- 6Mo5???? ClO3- 6H
6Mo6???? Cl- 3H2O
41?????????
- ??????0.06 ?gL-1??,?????,?????,????????
- ????-0.1V,????-0.22V ?
- ?????,????? ?
- ???????????????15000? ?2000??,???????????????????,
??????? ??????
42???????
43???
44???????
- (1)????
- (2)?????????
- (3)?????????
45???????????
- 1.????? m2/3t1/6????? ??mK1ptK2p ?? id
kP1/2 kh1/2 - 2.??
- ????????
- 3.????
- ??????????????????
46?????????????
- 1.????
- ????????????
- ???????????(??)
- ????(??)
- ???????????
- 2.????
- ??????????????
- ?????????
47?????????????
- 3.????
- ???????????????
- ???????????
- 4.???
- ????
- (1)??????
- (2)??NaSO3,(???????)
- (3)??NaCO3???(?????)
- 5.??????
- ????(??)?????(Cu2,Fe 3 )
- ??????(??????????????????