Lampiran Tambahan.docx

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10.

LAMPIRAN 10.1

Perhitungan Kurva Baku Dapar HCl pH 1,2

10.1.1 Larutan Induk Kaffein 500 ppm π‘šπ‘”

500 π‘π‘π‘š = 0,1 𝐿 π‘šπ‘” = 500 π‘π‘π‘š . 0,1 𝐿 = 50 π‘šπ‘” 10.1.2 Perhitungan Pengenceran a. 75 ppm V1 . C1 = V2 . C2 V1. 500 = 10 . 75 V1 = 1,5 mL b. 100 ppm V1 . C1 = V2 . C2 V1. 500 = 10 . 100 V1 = 2 mL c. 125 ppm V1 . C1 = V2 . C2 V1. 500 = 10 . 125 V1 = 2,5 mL d. 150 ppm V1 . C1 = V2 . C2 V1. 500 = 10 . 150 V1 = 3 mL

e. 175 ppm V1 . C1 = V2 . C2 V1. 500 = 10 . 175 V1 = 3,5 mL 10.2

Perhitungan Kurva Baku Dapar Fosfat pH 7,4 10.1.1 Larutan Induk Kaffein 100 ppm π‘šπ‘”

500 π‘π‘π‘š = 0,1 𝐿 π‘šπ‘” = 500 π‘π‘π‘š . 0,1 𝐿 = 50 π‘šπ‘” 10.1.2 Perhitungan Pengenceran 100 ppm V1 . C1 = V2 . C2 V1. 500 = 100 . 100 V1 = 20 mL 10.1.3 Perhitungan Pengenceran a. 2 ppm V1 . C1 = V2 . C2 V1. 100 = 10 . 2 V1 = 0,2 mL b. 3 ppm V1 . C1 = V2 . C2 V1. 100 = 10 . 3 V1 = 0,3 mL

c. 4 ppm V1 . C1 = V2 . C2 V1. 100 = 10 . 4 V1 = 0,4 mL d. 5 ppm V1 . C1 = V2 . C2 V1. 100 = 10 . 5 V1 = 0,5 mL e. 6 ppm V1 . C1 = V2 . C2 V1. 100 = 10 . 6 V1 = 0,6 mL 10.3

Perhitungan Permeabilitas (pm) Kaffein dalam Dapar HCl pH 1,2 𝐢𝑔 = π‘ƒπ‘š =

145,6 π‘šπ‘” 75 π‘šπΏ π‘š 𝐢𝑔

=

= 1,94 π‘šπ‘”/π‘šπΏ

βˆ’0,001 1,94

= βˆ’0,00051

Lag Time Y=0 Y = -0,001x + 7,605 0 = -0,001x + 7,605 𝑋=

7,605 0,001

= 7.605

10.4

Perhitungan Permeabilitas (pm) Kaffein dalam Dapar Fosfat pH 7,4 𝐢𝑔 = π‘ƒπ‘š =

145,6 π‘šπ‘” 75 π‘šπΏ π‘š 𝐢𝑔

=

= 1,94 π‘šπ‘”/π‘šπΏ

0,086 1,94

= 0,044

Lag Time Y=0 Y = 0,086x + 0,155 0 = 0,086x + 0,155 𝑋=

0,155 0,086

= 1,802

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