GII THIU
CÁC U DÒ IN HÓA
CHNG 6
Lnh vcng dng
• Phân tích (các pp
i
n hóa – c
c ph
, quét th
, …;
các pp ph
nghi
m, s
c ký (detector) …)
• Môi tr
ư
ng
• Y sinh
• V
t li
u
• Giao thông v
n t
I, các ngành công nghi
p,…
• Nông nghi
p, nuôi tr
ng th
y h
I s
n,…
IN CC
   

    
 
  !"#$ 
    %& %
in cc so sánh
           
     
    !
→
 "  #
$%
&    '( ( )*+  ' +  

, (       (  
,- % '  %  %* ' )   
   ( "%
&  
./"  #0"./"1" 2
  
 *    3
)4  #0"&1"2 0&1$
– Các
i
n c
c so sánh k
thu
t (Cu/CuSO
4
…)
Practical Reference Electrodes
Common Name Electrode V (NHE)
SCE Hg/Hg
2
Cl
2
/sat. KCl + 0.241
Calomel Hg/Hg
2
Cl
2
/1M KCl + 0.280
Mercurous sulphate
Hg/Hg
2
SO
4
/sat. K
2
SO
4+ 0.640
Hg/Hg
2
SO
4
/0.5M H
2
SO
4+ 0.680
Mercurous oxide Hg/HgO/1M NaOH + 0.098
Silver chloride Ag/AgCl/sat. KCl + 0.197
Copper sulphate Cu/sat. CuSO
4
+ 0.316
Zinc/Seawater Zn/seawater - 0.8
Note that zinc in seawater is a useful practical reference elect
rode, although it has no theoretical basis for the reference pot
ential.