

J. Jpn. Soc. Soil Phys.
3
No. 30, p. +++2 ,**.

ΐῐ῔ΐῌ῏ῒ῍῎ῑ   *Point of zero charge of soil clays
Katsutoshi SAKURAI** Faculty of Agriculture, Kochi University, B-,**, Monobe, Nankoku 12-῍2/*,, Japan+30, a, b ; Wada and Greenland, +31*0 CxS~   

 

@ ;EPA"MNOdeAT

 ῌ



 
!" #$%

&  '() *+,-. /01 2345 6789-.:;ῌ

Ky#$? @tJN

EPA"

%!K&1 c"de +31* ? Guxg 0  van Raij and Peech /+31,0 ?%!
K&1 2O c"QPQE T
gE&  LR-S E g +32+ ; <=>-.?!

Uehara and Gillman #$  -. @&;AB-%! c"QKE Tg g HI"CA?#D# ##Q%! c"K?  G

E!FCA-% GH"? I# /Morisaki et al.,EPA"

#%!T.AG U/>Oux S@VTsxS / ,**+0

+33-0

J$ 

%!K&1LMNOI#2O S C#WdP'(E)Q? G*; RS@euxSsuME"AA@  deN7 SCA " +T,U#D-SVW#-X" SYZ

[!.\

RS@ PZC E/>"CAG@0E1]"CA?

^_!2E3`"4#a'#$ /b5 ῌ 
X pH R F5KYGZDR F[ῌ? 1" J pH - +3320

A}gCA@$ G 






 2O /Point of zero charge,  PZC A\ 0c "  d e  Mattoson?a'-0]A-  ^Y /s*0/+3-,0 ?6fTg7&18 G9E" ?

 Gouy-Chapman 3P ¡rSgz ῌ ¢# eh&1E:igAD   ?j(klA;mEnS @A@<o-=>#$ /pH
p10



s*p/,nekTῌp0+ῌ,qrsASt@#$ TuT +3/* ? 
m@

t

% SYZ;de?Ew -g G
gQ X AvBC

£sinh¤+.+/£z£/PZC¥pH0¦-g X AvBCD

F#D-S;de?o1" +30* ?

§§ῌ¢CC# n j5KY e _F` k ¨©ª5F` T a+[Y z j5>Gux#$ H`#$ «¬­¨+®¯°5 /ypsinh /x00 I#@2MNO2345L6789A

x ]?¥+ ux + ±# ²³ ypx ?K%b@

Sg:;ῌ ;

A´| S % PZCc"JgdeKy?

z_AL {g /M|} Yoshinaga and Aomine,* µfZg( ¶12-῍2/*, µf·h¸¹(º ,** : »  2O 1  a¼iI#

%µS pH c#

[d  eS pH c#[d+l¹ º 30 » ,**.

12

ῌ+

ῌ,



+¯°±²³´µgV¶·¸$fg:!

 

 PZCpH  *./

!"#$%

 ῌ &'( )*+,'-./01,.
+234567!$ pH +89:!;<=9>?@$A('>?

BCD Sakurai etfg:!pOg~~ s* g

cq$e. b<Y1K. MN , )Of u?
PZNCSPoint of zero net charge : 456stY Wada
and Okamura, +32- 1K. ῌ456

TeU$e.b<eZhU>?

al., +322
PZC 1EFGHIJ J ,KLM  O ῌ+891,ῌZh$% pH U>? . -῍. xqm7!>b<e L

N . )O1PQR-.

U7!1(TeIEPSIsoelectric Point TU : VWXY1K

U$e.  PZSE @$?



Z[\]^6_`ab<1cd.;<efg

e +?(' + M

KCl,

Zh pH U> i1jk%lmb<nNH. Cl %o$£4562¤R u+fg:! pOg>? sd gcq$e. fg1rst%uZhU$vw
PZCS+ + x yzlTfgZh$% pH U {|}<Y~456stY>b<e> ZhU$D-

!23>>¡¢e +ste.r¥¦>§%PZSESPoint of zero salt effect : {|}<Y1K

. 7!z1K.¨©ª% pH U 
O e/0> «¬­§R®Zh$% pH U

van Raij

K¼ : "LM

ῌ-

6

and Peech, +31,  LM 

13

PZC !

of exchangeable bases V+u CEC^_Bst^_B Al Q e#ective CEC, ECEC ,v +-)

PZSEPZNCIEP  ,  

/E Soil Survey Sta#, +33, w%  B !"#$%&"#'"()%&xH./ yo/0 \z{hi|-?n*"+,-./ %&"0123 45

n 1}~+[ ./E ῌ

 67894:#678+,-./ s [ &2 +320 ( w3 + 

esu g;+ < s* = sH >? 0123

~

 sIS @ABC3  sOS ABC

pH +O 7G!CB

3  sD %&" Sposito, +32+

 pH +@ 456

kP 8k pH 9l: RnDE.FG %&" H

ECEC ; <*r=(m;

012I+J+ "KLMj) Rj  !CBB; PZC N2 OC3

678 + P./  kP;/`a  (Q R sd  9SLM PQ

.TT:/;j sH 9SLM./ T IEP   LM[ +yo/45U/(VV#$WXYI9S
 Z./&45[PZNC  >?nb@' [ n kP`a 3 ./@J


^_Bezghi@J.T Sakurai
et al., +323 c R/A sB & C

 [ ./\]12^_ Cation Exchange Capacity, CEC  pH 1 `a + M b'

Y+ 0123

Ecd e2fghi () 0Dj kP@' `a
M

[

*.*/

Ej() ezghi@J+j) +5 kP`a(

123 [ ./ ( !CB"mc8  E.+ pH V012)/ T 45! j kP pH #l BI94:J-§¨©ª«+ /¬[$  ­8K®¯O p°±²5P³

j O$() j%&

CEC  kP



')/

(m

I ( +E kBF ¡+'¢Gῌ pH £ ¡  ¤¥ H¦V

9L¥´M

E£Nµ¶ ) Sakurai et al., +322 Rn CEC )o45o·6   ¸¹

Ipq+*r^_BstQ sumB"+º»OWXn !CB"  & C 30 ¼ ,**.

14
  

Oxisols  

1 
  (&*+,B







 low activity clay  

 23 HI 0' *+,1(   CEC  +0 cmol ! g clay"+ #$ ῌ-./B ? JECEC  +, cmol ! g clay"+ #$%&'(Soil Survey Sta#, +33,) *+, -./0' &1.#$234567'8

#\*kl:K]2SLM+ 9: ; .2 *+,NO,.Vg  .2 LP+45 <= +32, a, b ; Sakurai et al., +322,

BFQ( 1  HL

+323 aa ;s F= F T Rῌmno, 9:> ? Sakurai et al., +323-

pqr : E

Al     

*+,.@ABCD

UVklW.27'kl8 F( . ^_* , : + R

Sakurai et al., +323 cL. ῌE !FG*+, Sakurai et al.,)*# Sakurai et al., +33+

Saha et al., ,**-

Hydroxyaluminosilicate-Mt !F+*,

PZC Y0'45Z%&

Sakurai and Huang, +33/, +330, +332 ; Taniguchi&

et al., +333, ,***, ,**+ ; Saha et al., ,**+, ,**,, ,**-

0'\45 +30* ]$.X/ , $I= +330 ; Y0ῌ$I+332 ; Y0= +332
et al., +330, +332 ; Ishizuka et al., ,*** ; Kadir et=[#$.f0']g F7E ,D
T=¡1Z%&'(' {]JK [145^¢%&']

5£45Zg

#$. ¤_¥¦

3 *+,1(23 - Sakurai

N, PZC    

0 JK%LM& *+, NEOP' (2 &Q R  @S*,T=UV-WNOg UVklW.

27'klX+33*/  H" *+,# $I +33*

1

S Iwasaki et al., +331 a,\= 0'TB

b

=&

`§. ¨©1aª

fB+  b)*,#c«¬+ Innersphere complex ­7.27'

al., ,**+

&=Z445.27' 5  ,

PZC x*,#B

T 0'*+,-[    /4L NO,\  PZC VgB 5#\* ]2S^_ῌ#\6*`7 a£. NEw®Ead90kl 3

*+,1(-b a-c8=& VNO,\  PZC gB 5£.¯

1 Z9 0'd ῌ ef0']g$I

1B+33* 2Z9h#

,  e7  ,f 0'°g ±²,

*+,if!FeῌAl : E !jCa"^_*"klmnopqr";s "<t=SiO,
ῌ e *+,VgB " f0'Uehara and Gillman, +32+



uuῌe

! gB

>6B.&' FeῌAl : E ?@ .Av0^_*wklmnopqrxByzB

07'  *+,dC.Vg pH 1 D{.E -³ /4e7.

#B

7'(

)*]2S PZC

$I +33*

- hb´ ij &kµRE .2 lm.27'  b &Q µ#B  hb´n0ijo¶nB

Rhoton et al., ,**-·,²p¸N¹]2S<tqrMQ-°µ ;sV s.2

Z5 j Ca w;s  (| F}~.] ##0 PZC wº»t#B (  ./PG( 

,***

)*

Schwarz et al.,º» :¼ kl. ῌ



15

S., Hirota, M., Priantna, S. J. and Juairiah (,**+) :Characteristics of Ultisols under di#erent wild- ῌῌ ﬁre history in South Sumatra, Indonesia : I.

 !"#$%&'()*+,-./0$1&

Physico-chemical properties. Tropics, +* : /0/῍'()*+,-.2345 6789:

/2*.

;<=>!=?

ῌ  +332 : Kn gBh;<=@ABC /D&.EFGH1.

klc! ¡¢£¤¥? Rashid et al., ,**,

/ IJKLMῌ§¨©ῌNOP QGRST/,UVA $1./W$1.XMYZC[PAB\Q]

 PZC Y

ZC Korah et al., ,**-^

¤¥

¦{

Kn 03 : .22῍.31.
 +332 :¡¢£ª >« { ¬­®¯%n ., :31῍+*0.
Korah, J., Spieker, W.A. and Regalbuto, J.R. (,**-) :_/`abP Q>cdCef.gBh

Why ion-doped, PZC-altered silica and alumina

GRSTij

fail to inﬂuence platinum adsorption. Catalysis!ef.]kl

mn oUGpURAB\Q PZC P pH 
qAMrQ sC Boisvert et al., ,***^Letters, 2/ : +,-῍+,1.

  ,**+ : ῌ῍. °±²
{  n °±

ῌ ῏ ῎ ῍P³´µ

Kn pp. +++῍+-*n ¶·K¸¹zn ¶{Boisvert, J-P., Persello, J., Foissy, A., Castaing, J-C.

Mattoson, S. (+3-,) : The laws of soil colloidal behav-

and Cabane, B. (,***) : E#ect of surface charge

ior, IX. Amphoteric reactions and isoelectricon the adsorption mode of sodium poly (acrylate)weathering. Soil Sci., -. : ,*3῍,.*.

on alumina-coated TiO, used as coating pigment.

Morisaki, H., Kasahara, Y. and Hattori, T. (+33-) : The

Colloids Surfaces. A : Physicochem. Eng. As-

cell surface charge of fast- and slow-growing

pects, +02 : ,21῍,30.

bacteria isolated from grassland soil. J. Gen.

tu ῌ vw

xyz

+320 :tuῌvw { p. 1,n |}n ~{ῌ pH *.  ῌ  +32, a : Appl. Microbiol., -3 : 0/῍1..
Rashid, Md. M., Kang, Y. and Sakurai, K. (,**,) :Kn /- : -*0῍-+,.

Selenium chemistry in amorphous iron (hydr)oxide-applied soil as inﬂuenced by redox poten-ῌ ῌ +32, b : Agtial (Eh) and pH. Soil Sci. Plant Nutr., .2 : ,0+῍,03.

Cῌ kl { Rhoton, F.E., Romkens, M. J.M., Bigham, J.M., Zobeck,Kn /- : -1/῍-13.
Ishizuka, S., Tanaka, S., Sakurai, K., Hirai, H.,
Hirotani, H., Ogino, K., Lee, H.S. and Kendawang,

T.M. and Upchurch, D.R. (,**-) : Ferrihydrite inﬂuence on inﬁltration, runo# and soil loss. Soil
Sci. Soc. Am. J., 01 : +,,*῍+,,0.

J. J. (+332) : Characterization and distribution of

Saha, U.K., Taniguchi, S. and Sakurai, K. (,**+) : Ad-soils at Lambir Hills National Park in Sarawak,

sorption behavior of cadmium, zinc and lead on

Malaysia, with special reference to soil hardness

Hydroxyaluminium - and Hydroxyaluminosili-

and soil texture. Tropics, 2 : -+῍...

cate - Montmorillonite omplexes. Soil Sci. Soc.

Ishizuka, S., Sakurai, K., Sabang, J., Kendawang, J. J.

Am. J., 0/ : 03.῍1*-.

and Lee, H.S. (,***) : Soil characteristics of an

Saha, U.K., Taniguchi, S. and Sakurai, K. (,**,) : Si-abandoned shifting cultivation land in Sarawak,

multaneous adsorption of cadmium, zinc andMalaysia. Tropics, +* : ,/+῍,0-.

lead from their mixed solutions on hydro-

Iwasaki, K., Tsuji, M. and Sakurai, K. (+331) : Frac-

xyaluminum- hydroxyaluminosilicate- montmo-

tionation of copper and manganese in agricultur-

rillonite complexes. Soil Sci. Soc. Am. J., 00 : ++1῍al soils near an abandoned copper mine. Soil Sci.
Plant Nutr., .-, +/1῍+03.
Kadir, S., Sakurai, K., Ishizuka, S., Tanaka, S., Kubota,+,2.
Saha, U.K., Iwasaki, K. and Sakurai K. (,**-) : Desorption behavior of cadmium, zinc and lead sorbed 789 : 30 ; ,**.

16

on hydroxyaluminum- and hydroxyaluminosilicate- montmorillonite. Clays and Clay Miner-

charge (ZPC). Soil Sci. Plant Nutr., ., : 3-ῌ+*-.

ῌῌ +330 : ZPC!"#$%&'()*+ ,-./0 12,

als, /+ (/) : .2+ῌ.3,.
Sakurai, K., Ohdate, Y. and Kyuma, K. (+322) : Com-3456 01 : -,ῌ-3.

parison of salt titration and potentiometric titra-

Sakurai, K. and Huang, P.M. (+330) : Inﬂuence of po-tion methods for the determination of zero pointtassium chloride on desorption of cadmiumof charge (ZPC). Soil Sci. Plant Nutr., -. : +1+ῌ+2,.

sorbed on hydroxyaluminosilicate- montmo-

Sakurai, K., Ohdate, Y. and Kyuma, K. (+323 a) :rillonite complex. Soil Sci. Plant Nutr., ., : .1/ῌPotentiometric automatic titration (PAT) method to evaluate zero point of charge (ZPC) of.2+.
Sakurai, K. and Huang, P.M. (+332) : Intercalation ofvariable charge soils. Soil Sci. Plant Nutr., -/ :hydroxy-aluminosilicate

23ῌ+**.

num in montmorillonite and resultant phy-

Sakurai, K., Ohdate, Y. and Kyuma, K. (+323 b) :Factors a#ecting zero point of charge (ZPC) of
variable charge soils. Soil Sci. Plant Nutr., -/ : ,+
ῌ-+.

and

hydroxy-alumi-

sicochemical properties. Soil Sci. Soc. Am. J., 0, :-0,ῌ-02.
Sakurai, K., Tanaka, T., Ishizuka, S. and Kanzaki, M.
(+332) : Di#erences in soil properties of dry ever-

Sakurai, K., Nakayama, A., Watanabe, T. and K.

green and dry deciduous forests in the Sakaerat

Kyuma (+323 c) : Inﬂuences of aluminum ions on

Environmental Research Station. Tropics, 2 : 0+ῌ

the determination of ZPC (zero point of charge)of variable charge soils. Soil Sci. Plant Nutr., -/ :2*.
Schwarz, S., Lunkwitz, K., Kessler, B., Spiegler, U.,
Killmann, E. and Jaeger, W. (,***) : Adsorption0,-ῌ0--.
Sakurai, K., Teshima, A. and Kyuma, K. (+33*) :Changes in zero point of charge (ZPC), speciﬁc
surface area (SSA), and cation exchange capacity

and stability of colloidal silica. Colloids and Surfaces A, +0- : +1ῌ,1.
Soil Survey Sta# (+33,) : Keys to Soil Taxonomy, /th(CEC) of kaolinite and montmorillonite andedition. SMSS technical monograph No. +3.

strongly weathered soils caused by Fe and Al

Blacksburg, Virginia : Pocahontas Press, Inc. p.

coatings. Soil Sci. Plant Nutr., -0 : 1-ῌ2,.

 +33* : 

 ZPC

 

 -. : ,ῌ+..
Sakurai, K., Nakamura, Y. and Kyuma, K. (+33+) ://0.
Sposito, G. (+32+) : The operational deﬁnition of thezero point of charge in soils. Soil Sci. Soc. Am. J.,./ : ,3,ῌ,31.

Changes in zero point of charge (ZPC), phosphate

Taniguchi, S., Hiradate, S. and Sakurai, K. (+333) :retention and speciﬁc surface area of some vari-Speciation of aluminum in hydroxyaluminum

able charge soils after several chemical treat-and hydroxyalumino- silicate ions ﬁxed by Mt,

ments. Soil Sci. Plant Nutr., -1 : .-/ῌ....

using ,1Al-NMR and ICP-AES. Clay Sci., +* : ..-ῌ

Sakurai, K. and Huang, P.M. (+33/) : Chapter .. Cad-.//.

mium adsorption on the hydroxyaluminum-

Taniguchi, S., Yamagata, N. and Sakurai, K. (,***) :montmorillonite complexes inﬂuenced by oxa-

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17

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