%0 Generic
%A WIDYA , PUTRI ANDESA
%C UNIVERSITAS LAMPUNG
%D 2023
%F eprints:76097
%I FAKULTAS MATEMATIKA DAN ILMU PENGETAHUAN ALAM
%T ANALISIS KEMOMETRIK KEMURNIAN AIR ZAMZAM YANG  BEREDAR DI PASARAN BANDAR LAMPUNG MENGGUNAKAN  METODE Principal Component Analysis (PCA) DAN Partial Least Square  (PLS) BERBASIS DATA SPEKTROFOTOMETRI FTIR
%U http://digilib.unila.ac.id/76097/
%X Dalam penelitian ini dilakukan analisis kadar kemurnian air zamzam di pasaran  Bandar Lampung menggunakan metode analisis statistik kemometrik, Principal  Component Analysis (PCA) dan Partial Least Square (PLS) berbasis data  spektrofotometri Infrared, dan metode pendukung lainnya metode MPAES, serta  pengukuran nilai TDS. Spektra FTIR air zamzam murni dan air zamzam  campuran menunjukkan bahwa adanya vibrasi ulur dari ikatan O-H pada daerah  gugus fungsi dengan bilangan gelombang 3700-3100 cm-1 dan vibrasi tekuk dari  ikatan H-O-H pada daerah sidik jari pada bilangan gelombang 1640 cm-1, pola  serapan nya identik dan hanya berbeda pada nilai kuantitatif absorbansi, dimana  air zamzam lebih rendah dibandingkan dengan air jenis lain. Hasil analisis PCA  data gabungan dari nilai FTIR, MP-AES, dan TDS menunjukkan bahwa adanya  perbedaan pola, dimana sampel A hampir berdekatan dengan pola air zamzam  murni, dan sampel lain berdekatan dengan pola air mineral. Hasil prediksi metode  PLS menunjukkan Kadar campuran air mineral dalam air zamzam yang beredar di  pasaran Bandar Lampung adalah sebesar 35% hingga 55%.  Kata Kunci: Air zamzam, FTIR, Kemometrik, MP-AES, PCA, PLS, TDS    In this research, analysis the purity of zamzam water in the Bandar Lampung  market was carried out using chemometric methods, Principal Component  Analysis (PCA) and Partial Least Square (PLS) based on Infra red  spectrophotometry data, and other supporting data are MPAES data, and TDS  values. The FTIR spectra of pure Zamzam water and mixed Zamzam water show  that there are stretching vibrations of the O-H bonds in the functional group region  with wave numbers 3700-3100 cm-1 and bending vibrations of the H-O-H bonds  in the fingerprint region at wave numbers of 1640 cm-1, the absorption pattern is  identical and differs only in the quantitative value of absorbance, where Zamzam  water is lower compared to other types of water. The results of the combined PCA  data analysis of FTIR, MP-AES, and TDS values show that there are different  patterns, where sample A is almost close to the pure Zamzam water pattern, and  the other samples are close to the mineral water pattern. The prediction results of  the PLS method show that the mineral water mixture content in Zamzam water  circulating on the Bandar Lampung market is 35% to 55%.  Keywords: Chemometrics, FTIR, MP-AES, PCA, PLS, TDS, Zamzam water