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PENENTUAN KADAR SULFAT DENGAN METODE TURBIDIMETRI

RescyRachmatia (G441100!"1 #$%a&S$ci Pam$&'as)

De*a+teme& Kimia, Fa$%tasMatematia Da& I%m$Pe&'etah$a&A%am

I&stit$tPe+ta&ia& B-'-+

ABSTRAK

Kee+$ha& (t$+.i/ity"

a/a%ahea/aa&/ima&at+a&s*a+a&sis$at$atcai+.e+$+a&'ai.ateha/i+a&atattate+%a+$t (ISO,

1222"3 Ti&'at ee+$ha& ai+ (t$+.i/itas" /a*at/ite&t$a&me&''$&aa&a%at$$+ ya&'

/ise.$tt$+.i/imete+3 Met-/e t$+.i/imet+i /a*at /i'$&aa& $&t$ me&e&t$a& a/a+ s$%at /a%am

s$at$ %a+$ta&3 5asi% /ata ya&' /i*e+-%eh *a/a met-+e t$+.i/imet+i i&i te+/a*at *a/a Lam*i+a&

Ta.e% 13 Pe+samaa& 'a+is /i*e+-%eh yait$ y 6 ),708 0,424 /e&'a& R9 6 0,2:;3 Pe+samaa&

'a+is i&i /a*at /i'$&aa& $&t$ me&e&t$a& -&se&t+asi s$%at *a/a sam*e% ya&' te%ah /i.e+ia&3

Te+/a*at *e+.e/aa& &i%ai t$+.i/itas *a/a a&a%at 13 5a% i&i m$&'i& /ise.a.a& a+e&a $+a&'

te%iti&ya /a%am me&'-c- Ba

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/i$$+? cahaya ya&' /ite+$sa& (t+a&smitte/", cahaya ya&' /iham.$+a& (scatte+e/", ata$e/$a

/$a&ya (Lam.+-$et a%, )00:"3

Pe&e&t$a& a/a+ s$%at /a%am %a+$ta& /a*at me&''$&aa& met-/e t$+.i/imet+i3 S$%at

me+$*aa& se&ya>a ya&' sta.i% seca+a imia a+e&a me+$*aa& .e&t$ -si/a *a%i&' ti&''i /a+i

$&s$+ .e%e+a&'(#i/=a=a&ti )004"3

METODE

A%at /a& Baha&

A%at ya&' /i'$&aa& a/a%ah t$+.i/imete+, 'e%as *ia%a, 'e%as $$+, %a.$ taa+ 100 m%, /a& .$+et3

Baha& ya&' /i'$&aa& a/a%ah %a+$ta& sta&/a+ s$%at (1**m" (13:14 ' K)SO4 e+i&' /i%a+$ta&

/a%am 1 L ai+", Na

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-*a%ese& (.e+*e&/a+se*e+tim$tia+a" /ise.a.a&-%eh*a&t$%a&cahaya/a+i*a+tie%*a+tie% s$s*e&se

it$ (ee Ty&/a%%"3

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0 10 20 30 40 50 60

0

20

40

60

80

100

120

140

f(x) = 2.36x - 0.49

R = 0.99

Konsentrasi Sulfat (ppm)

Turbidans Terkoreksi (NTU)

G+ai 1 $+@a h$.$&'a& -&se&t+asi s$%at /e&'a& NTU

SIMPULAN

Met-/e t$+.i/imet+i /a*at /i'$&aa& $&t$ me&e&t$a& a/a+ s$%at /a%am s$at$ %a+$ta&3

T$+.i/imete+ me+$*aa& a%at a&a%isis *a/a met-/e i&i3 Be.e+a*a *e+%a$a& /i'$&aa& $&t$

me&=a'a esta.i%a& ee+$ha&3 Te+/a*at *e+.e/aa& &i%ai t$+.i/itas *a/a a&a%at 1 $%a&'a& 1

hi&''a 73 5a% i&i /ise.a.a& -%eh $+a&' te%iti&ya /a%am me&'-c- Ba

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5e&/+i-& /a& #i%/ia&3 )01)3 Ra&ca&' .a&'$& a%at $$+ ti&'at ee+$ha& at cai+ .e+.asis

mi+--&t+-%%e+ AT:2S;1 me&''$&aa& se&s-+ -t-t+a&sist-+ /a& *e&am*i% L

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K-&se&t+asi%a+$ta&st-s$%at (**m" 6 0301 m-%L 8 1!4 'm-% 8 107 m'1'

6 1!40 **m

Pe&'e&ce+a&? (N"1 6 (N")

031); mL 8 1!40 **m 6 ); mL 8 N)

N) 6 :3!000 **m

Ta.e%) Pe&'$$+a&-&se&t+asis$%at*a/asam*e%/e&'a&t$+.i/imet+i

La+$ta&

T$+.i/itaste+$$+

(NTU"

T$+.i/itaste+-+esi

(NTU"K-&se&t+asi (**m"

1 ) 7 1 ) 7 1 ) 7 Re+ata

Sam*e%

1

230

0

2731

0:430 213!! ::3:! :037!

723027

;

7!3:4

:

743)7

)7!30!7:

Sam*e%

)

;34

0

)3!

0)340 ;)31! ;:34! ;:31!

))3714

)432:7

2

)43:;

:)430;1:

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6(39.0935+37.8648+34.2632)ppm

3

6 7!30!7: **m

Sta&/a+ /e@iasi sam*e% 1 6 i=1

n

(xxratarata)2

n1

6

(39.093537.0738 )2+(37.864837.0738 )2+(37.073834.2632 )2

31

6)3;104

Sta&/a+ /e@iasi sam*e% ) 6 i=1

n

(xxratarata)2

n1

6 1,;0;:

Kete%itia& sam*e% 1 6(1( StandarDeviasir erata ))x100

6(1( 2.510437.0738 )) x100

6 273)2

Kete%itia& sam*e% ) 6(1( StandarDeviasirerata ))x100

6(1

( 1.5058

24.0518

))x100

6 273!4

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