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E*"?0.- .0"2&-(()" $/(/."&"20$<()" D&"20,/1) 1&- $+*","($- 2/(#"(0,%#$4 Na+, Li+, K+ $ Ag+.

K/*$..$- ELFMK ,"2/*"(15"0 $.!/&'+/<%0' !/(-0$" /9 /9,%+#%6

.,%<("($- (.0%(1%,0()6 /9,%+#%6) $ 95B",()6 ,%.0</,%6 $+ $(1$<$15%&'()6 2/*!/("(0/< $ $6 .*"."4 1&- ./+1%($- /!,"1"&"((/4 2$.&/0(/.0$ $ (%.0,/42$ ,8-*"0,/<.

 

 

 

 

>(";($4

 

 

 

 

 

 

 

 

 

 

 

>(50,"(($4

 

 

 

 

 

 

 

D&"20,/1

 

 

 

D&"20,/1

 

 

 

 

.,%<"("($-

 

 

.,%<("($-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

>(";($4

 

 

 

 

 

 

 

0,1 C HCl

 

,%.0</,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

>(50,"(($4

 

0"2&-((%-

 

 

 

 

 

 

 

 

 

 

 

F/,$.0)4

 

 

,%.0</,

 

*"*9,%(%

 

 

 

 

 

 

 

 

 

 

!,$!/4

 

 

 

 

 

 

 

Ag/AgCl

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0"2&-((%-

 

 

 

 

 

 

 

 

 

*"*9,%(%

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0"2&-(()4 D&"20,/1

K/*9$($,/<%(()4 .0"2&-(()4 D&"20,/1

 

=$.. 2.2. ,8-35<.0<$0"&'()4 D&"20,/1

F",<$3()4 .0%(1%,0()4 /9,%+"# ,8 (primary pH standard). J0/ <"@".0</ 1/&:(/ /0<"3%0' .&"15?@$* 2,$0",$-*: </.!,/$+</1$*/.0' !,$7/0/<&"($- < <)./2/3$.0/* ./.0/-($$; 1/.05!(/.0' < 2%3".0<"

.",0$B$#$,/<%((/7/ /9,%+#% .,%<("($- (certified reference material, CRM);

29

!,$7/0/<&"(()" $+ ("7/ ,%.0</,) 1/&:() 9)0' 5.0/43$<)*$ 1&$0"&'(/"

<,"*- $ $*"0' ($+2$4 /.0%0/3()4 !/0"(#$%& :$12/.0(/7/ ./"1$("($-; $*"0' ,8 < $(0",<%&" 3 - 11. =%.0</,) /!,"1"&"((/4 2/(#"(0,%#$$,

!,$7/0/<&"(()" $+ !",<$3(/7/ .0%(1%,0(/7/ /9,%+#% < </1",

,"2/*"(1/<%(/ (%+)<%0' !",<$3()*$ /9,%+#%*$ .,%<("($- (primary reference standards, PS), % $+*","((5? < ($6 <"&$3$(5 ,8 ,"2/*"(1/<%(/ /9/+(%3%0' ,8PS. K/(#"(0,%#$$ 2/*!/("(0/< < ,%.0</,%6 <),%:%?0 < */&-&'(/.0-6 (*/&'·27, m).

> 2%3".0<" !",<$3(/7/ .0%(1%,0(/7/ /9,%+#% 3%.0/ $.!/&'+5?0

7$1,/B0%&%0 2%&$-, % < 2%3".0<" !",<$3(/7/ /9,%+#% .,%<("($- – "7/ 0,05 C ,%.0</,, ,8 D0/7/ ,%.0</,% (reference value pH standard, RVS) /9/+(%3%?0 ,8RVS, % $+*",-?0 < -3"42" 9"+ :$12/.0(/7/ ./"1$("($-. J0$ <"&$3$() ,8 !,$ ,%+&$3(/4 0"*!",%05," (!/ ;2%&" N"&'.$-) < </1" !,$<"1"() < 0%9&.2.1.

&"15"0 !/13",2(50', 30/ < .0%(1%,0(/* </1/,/1(/* D&"20,/1" 1%<&"($" </1/,/1% ./.0%<$&/ 1 %0*. (101325 F%), % (" 1 9%, (105 F%), 2%2 D0/

9)&/ ,"2/*"(1/<%(/ 2/*$..$"4 ELFMK < 1981 7.

 

 

O%9&$#%

2.1.

!"#$#%&

'(RVS 0,05 )

*+,%+-+

'./0*+'.

-#,'+10.".0. 2."#3 4'# '.5"#$%&6 0!74!'.08'.6

 

 

 

 

 

 

 

 

 

 

 

 

t, ûC

 

pH

 

t, ûC

 

pH

 

t, ûC

pH

 

 

 

 

 

 

 

 

 

 

0

 

4,000

 

35

 

4,018

 

65

4,097

 

 

 

 

 

 

 

 

 

 

5

 

3,998

 

37

 

4,022

 

70

4,116

 

 

 

 

 

 

 

 

 

 

10

 

3,997

 

40

 

4,027

 

75

4,137

 

 

 

 

 

 

 

 

 

 

15

 

3,998

 

45

 

4,038

 

80

4,159

 

 

 

 

 

 

 

 

 

 

20

 

4,001

 

50

 

4,050

 

85

4,183

 

 

 

 

 

 

 

 

 

 

25

 

4,005

 

55

 

4,064

 

90

4,21

 

 

 

 

 

 

 

 

 

 

30

 

4,011

 

60

 

4,060

 

95

4,24

 

 

 

 

 

 

 

 

 

 

8%,-15 . 52%+%(()*$ 0",*$(%*$ ELFMK ,"2/*"(15"0.- 0",*$(

"&$#'() #$"&*+, "&-.+.(/ "0 (operational pH standard, pHOS). P7/ 7/0/<-0

30

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