197718476 uv vis spektroskopija
TRANSCRIPT
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3. LALJBI3. LALJBIAA IDLJIAAA IDLJIAEKKIJA (EKKIJA ())
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P:
S a a aaa a
Baa a ac a aa a , aaa (a) a a aba
aa a a
Ea a aaa a (/) c (/H)
S (b) a aba (UV), (V) a ac a aa
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()
UV (b) a: 200400 , V a: 400800
UV/V a a a 200800
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UV/V a (E = ) ba
Ra 3 a a: ,
a aa a ba
a UVaa a a a aba
UV a
a a a, a aa a
( aa) a a a a a
aa (, , a)
A / A /
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*
*
*
*
*
*
Pa a b a:
*
, *
, *
*
Ea ba a a a :
* > * > * > *
()
()
()
* ()
* ()
E
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* aa aa aaa
a a a , .U UVa a ab c.
*aa aa a a b aa, a
a ca.Pba a a, a a UV/V aa (
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a baa a aa
K :a , (a aa ), aa baa
Za UV/V aba a:
1. a aa * a a(: , ac, a a...)
2. a , a * *a a (a a a aa a a)
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:
EA
EA
EA
EA
0 a
3 ac0 aca
1 2 ac1 a aca
2 a1 a aca2 ac
3 a0 aca3 ac
2 aa a a baa (H)
3 aa a a baa (L)
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Paa UV/V aa ba a
aa H L
E
*
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aa a ()
a
baca
= 21 000
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A ()
P a aa:
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D a abaa UV/V a aa KF
Aca aa aa LB :
A = (I /I) =
A = abaca
= a ac c(ca a a; L c1 1)
c = caca /L
= a / c
I= a a
I = a a aa a
Ua aba a aa a a (I)a a a a (I) I/I 1.
Kaa I/I= 1, A = 0 EA ACIJE
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() a a ( a
a abaa a ).Za a (> 10 000 a aaa a * aa aa) ba aa (: 105 / L) b (c = 102 / L a 10100)
UV/V a a abac a (A) a ()
[aa a () T = I/ I ]
aa a a :
1. aa a() a abac 2. a ac ca a abac
V aa ab: =
A
.
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Va a, a a a
b aba aa (P = 01)
= 0,87 1020 P a. . P = a aaa = a (c2)
Fa a a aa a .N: * a a * aa, 1000 a. Ra ba aa b
a * ba, a a aa aa. S, *aa ba aa aa, a a aa b1.
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Ea
a
a
E E
H, L , , . .
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abaca
= 20 000
1,3
= 217 = 217
S a a a a ac aa( a a a a ac a b a ba)
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UVa a a a aa aaa a a a ac a 30 (a ). I a a a a .
Ka aa aa . BATOKROMNIPOMAK.
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1. BAKI AK a (c a aa)
aa aa KONJUGIRANOSTI
2. HIKI AK a (a aaa)
3. HIEKI AK (a a)
4. HIKI AK a (a a)
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UVa , a a
ba a ( b b). Tac aaa ab aca a c a( 470 ).
Ba a a a a ac aa b180 ( > 65 000), ab ac a 200 ( > 8 000) ab aca a 254 ( = 240).
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I ac aa 10 10 000, a a
*, * (b c aa a * aba)
UVa a a * ac a 242 , a = 18 000 ab * ac b300 = 100.Za * a ba aa E a * .
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aa
200360
205255
> * > *
b
CX X=BX=I
aa
175,000
275200
> * > *
aN=O
aa
1510,000
290180
> * > *
aaC=O
a10,000180 > *1CC
a15,000171 > *C=C
,
K
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F F
V a a a a aaa a
Oa aa a ac ac
aa
KFAKK
A a b , a aa aa a a (: aa, a, a aa, a)
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Tabca: WaFa aa a a : aa
Ga Kca a ()
Sa aa C=C + 30
Aa a + 5
A (OR) a 0
Eca a + 5
2,41,3
1,3
KF = 217
: 217 3 a : 15
aa a: 232 ;a: 232
RAUN:
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B B
Oa aba a UV aaa (200400 ) BEZBOJNI
P ba aa a
a(ba)
c( aaa)
a( )
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Pa ba a a aa BATOKROMNI EFEKT, a
a aba V .
IDLJII DI EKA
Kaa b a a ba (), a Va aba.
Oa a a, a a a aa ba
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Ba aba
aa / Zaaa ba
baa
aa
aa
a
aaaaa
ca
400
450
500
530
550
600
700
aaaaa
cacbaa
baaaa
a
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::
a
baca
aa a ()
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/ EKFEA/ EKFEA
:
a
ca
a
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I0 a a aa
I a a a a
UV 200400
V 400800
A = I0/ I
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/ :a UV/ V aa
a, aba (A), a a (T)
Oaa aba UV/ V a:a, a, a, CH2C2
K (a a a) a ac aa, a UV/ V a
UV/V a
U a , a a UV/ V a a a () aa aca
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LIEAA:LIEAA:
1. D. A. S, J. J. La, Pc Ia Aa, 4 E.,Sa C Pb, 1992.
2. L.G. Wa, Oac C, 6 E., Pc Ha, N J, 2006.
3. P. Y. Bc, Oac c, 4 E., Pc Ha, N J, 2004.
aa a () a b aaa:://.b.c/ac?=O39aU&a=