vi
PENETAPAN KADAR KALSIUM DAN KALIUM SERTA NATRIUM PADA HERBA MENIRAN MUDA DAN HERBA MENIRAN TUA (Phyllanthus urinaria Linn) SECARA SPEKTROFOTOMETRI SERAPAN
ATOM ABSTRAK
Meniran (Phyllanthus urinaria Linn) adalah salah satu tumbuhan obat indonesia yang telah lama digunakan untuk pengobatan berbagai penyakit. Salah satu khasiat meniran adalah sebagai penurun tekanan darah. Mineral yang sangat berkaitan dengan tekanan darah adalah kalsium, kalium dan natrium. Tujuan dari penelitian ini adalah Untuk mengetahui perbedaan kadar mineral kalsium, kalium, dan natrium dalam herba meniran muda dan herba meniran tua.
Metode penelitian yang dilakukan adalah destruksi kering. Penetapan kadar ketiga mineral dilakukan dengan menggunakan alat spektrofotometer serapan atom menggunakan nyala udara-asetilen pada panjang gelombang 422,7 nm untuk kalsium, kalium pada panjang gelombang 766,5 nm, dan natrium pada panjang gelombang 589,0 nm.
Hasil penelitian menunjukkan kadar kalsium dalam herba meniran muda dan herba meniran tua adalah (80,1711 ± 1,8324)mg/100 g dan (99,7375 ± 1,6991) mg/100 g; kadar kalium dalam herba meniran muda dan herba meniran tua adalah (555,1935 ± 2,4085) mg/100 g dan (1667,5193 ± 10,8758) mg/100 g; dan kadar natrium dalam herba meniran muda dan herba meniran tua adalah (28,3571 ± 0,2733) mg/100g dan (80,1890 ± 0,5471) mg/100 g.
Berdasarkan hasil penelitian, maka dapat disimpulkan terdapat perbedaan signifikan terhadap kadar kalsium, kalium, dan natrium antara herba meniran muda dan herba meniran tua dimana kadar kalsium, kalium, dan natrium herba meniran tua lebih tinggi daripada herba meniran muda.
Kata Kunci: Meniran (Phyllanthus urinaria, Linn.), Kalsium (Ca), Kalium (K), Natrium (Na), Spektrofotometer Serapan Atom
vii
DETERMINATION OF CALCIUM AND POTASSIUM AND SODIUM IN YOUNG HERB OF MENIRAN AND OLD HERB OF MENIRAN
(Phyllanthus urinaria Linn) BY ATOMIC ABSORPTION SPECTROPHOTOMETRY
ABSTRACT
Meniran (Phyllanthus urinaria Linn) is one of the Indonesian medicinal plant that has long been used for the treatment of various diseases. One of the properties of meniran is lowering blood pressure. Minerals that are associated with blood pressure is calcium, potassium and sodium. The purpose of this study was to know the level of calcium, potassium, and sodium in young herb of meniran and old herb of meniran.
The method which is used in this research is dry ashing. Determination of the three levels of minerals were performed using an atomic absorption spectrophotometer using air-acetylene flame at a wavelength of 422.7 nm for calcium, potassium at a wavelength of 766.5 nm and sodium at a wavelength of 589.0 nm.
The result showed that the levels of calcium in young herb of meniran and old herb of meniran were (80.1711 ± 1.8324) mg/100 g and (99.7375 ± 1.6991) mg/100 g. The levels of potassium in young herb of meniran and old herb of meniran were (555.1935 ± 2.4085) mg/100 g and (1667.5193 ± 10.8758) mg/100 g. The levels of sodium in young herb of meniran and old herb of meniran were (28.3571 ± 0.2733) mg/100 g and (80.1890±0.5471) mg/100 g.
Based on the result of this research, it can be concluded that there is a significantly difference of the levels of calcium, potassium, and sodium among young herb of meniran and old herb of meniran that the levels of calcium, potassium, and sodium in old herb of meniran was higher than young herb of meniran.
Key words: Meniran (Phyllanthus urinaria, Linn.), Calcium (Ca), Potassium (K),
Sodium (Na), Atomic Absorption Spectrophotometry
