scholarly journals KARAKTERISASI MIKROPLASTIK DARI SEDIMEN PADANG LAMUN, PULAU PANJANG, JEPARA, DENGAN FT-IR INFRA RED

2021 ◽  
Vol 13 (2) ◽  
Author(s):  
Kamelia Lestari ◽  
Haeruddin Haeruddin ◽  
Oktavianto Eka Jati
Keyword(s):  
Infra Red ◽  
Ft Ir

Milk acetone determination by the photometrical method after microdiffusion and via FT infra-red spectroscopy

2011 ◽  
Vol 28 (1) ◽  
pp. 33-48 ◽  
Author(s):  
Oto Hanuš ◽  
Václava Genčurová ◽  
Yunhai Zhang ◽  
Pavel Hering ◽  
Jaroslav Kopecký ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Indirect Method ◽  
Geometric Mean ◽  
Mid Infrared ◽  
Subclinical Ketosis ◽  
Infra Red ◽  
Variation Range ◽  
Ft Ir ◽  
Infrared Method ◽  
Photometrical Method

Milk acetone determination by the photometrical method after microdiffusion and via FT infra-red spectroscopyMilk acetone (AC) and betahydroxybutyrate (BHB) are important indicators of the energy metabolism of cows (ketosis occurrence) and an effective method for their determination, with reliable results, is of great importance. The goal of this work was to investigate the infrared method MIR-FT in terms of its calibration for milk AC and to develop a usable procedure. The microdiffusion photometric (485 nm; Spekol 11) method was used with salicylaldehyde as a reference (Re) and mid infrared spectroscopy FT (MIR-FT: Lactoscope FT-IR, Delta; MilkoScan FT 6000, M-Sc) as an indirect method. The acetone addition to milk had no recovery using MIR-FT (Delta). The reference AC set must have acceptable statistics for good MIR-FT calibration (M-Sc) and they were: 10.1 ± 9.74 at a geometric mean of 7.26 mg l-1, and a variation range from 1.98 to 33.66 mg l-1. The AC correlation between Re and MIR-FT (Delta) was low at 0.32 (P>0.05 but the Log AC relationship between Re and MIR-FT (M-Sc) was markedly better at 0.80 (P<0.01). The conversion of >10 mg l-1 as an AC subclinical ketosis limit could be > -0.80 (feedback 0.158 mmol l-1 = 9.25 mg l-1) and > -1.66. This could be important for ketosis monitoring (using M-Sc).

A study on using expanded perlite with hydroxyapatite: Reinforced bio-composites

2021 ◽  
pp. 095441192199656
Author(s):  
Erdoğan Karip ◽  
Mehtap Muratoğlu
Keyword(s):  
Body Fluid ◽  
Xrd Analysis ◽  
Cold Isostatic Pressing ◽  
Expanded Perlite ◽  
X Ray Diffraction ◽  
Pressing Method ◽  
X Ray ◽  
Infra Red ◽  
Ft Ir

People are exposed to different kinds of diseases or various accidents in life. Hydroxyapatite (HA) has been widely employed for bone treatment applications. In this study, HA was extracted from sheep bones. Bio-composites were doped with 1, 5, and 10 wt.% of expanded perlite and 5 wt.% of ZrO2–MgO-P2O5. The bio-composites were prepared by the cold isostatic pressing method (250 MPa) and sintered at 900°C for 1 h. In order to evaluate the characteristics of the bio-composites, microhardness, density, X-ray diffraction (XRD), Fourier transform infra-red spectroscopy (FT-IR), scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS) analyses were carried out on them. Additionally, the specimens whose characteristics were determined were kept in synthetic body fluid (SBF), and their in vitro behavior was examined. As a result, it was observed that microhardness increased as both the weight and the grain size of the expanded perlite were increased. Calcium silicate, tri-calcium phosphate, and hydroxyapatite were observed in the XRD analysis of all samples, and the formation of apatite structures was increased by addition of ZrO2–MgO–P2O5.

The Characteristic Evaluation of Hydroxyapatite Powders Synthesized from CaCO3 Refined from Oyster Shell and H3PO4

2006 ◽  
Vol 118 ◽  
pp. 639-644
Author(s):  
Hye Sung Kim ◽  
Su Chak Ryu
Keyword(s):  
Bone Density ◽  
Inductively Coupled Plasma ◽  
Oyster Shell ◽  
Atomic Emission ◽  
Xrd Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Inductively Coupled ◽  
Infra Red ◽  
Ft Ir

Hydroxyapatite (Ca10(PO4)6(OH)2, HAp) powders is synthesized using the mixed powders of CaCO3 refined from oyster shells and phosphoric acid (H3PO4-98%, Daejung) as starting materials. The characteristic evaluation and chemical analysis of the synthesized powders is performed by X-ray diffraction (XRD), Fourier-transformed infra-red spectroscopy (FT-IR), and inductively-coupled plasma atomic emission spectroscopy (ICPAES). XRD analysis of synthetic powder by heat treatment at 1300°C for 2hrs shows only HAp peaks corresponding to stoichiometric HAp. It is confirmed by ICP-AES test that impurities such as Zn, In, Ti, Ba, Cd, Pb, and Mn, is not detected at all, but small amounts of Ti and Be is observed (0.099ppm Ti and 0.002ppm Ba). Variation of bone density is measured by giving medication of HAp powder with drinking water into human body continuously for three month. After the medication, the bone density is higher than the medication before. This means that HAp powder made from this process can be used as improver of bone density.

scholarly journals An Application of Fourier Transform Infra-red (FT-IR) Microspectroscopy to the Study of Cigarette Manufacturing Defects

1992 ◽  
Vol 15 (2) ◽  
pp. 59-64
Author(s):  
MM Thompson ◽  
MS Ireland
Keyword(s):  
Fourier Transform ◽  
Common Type ◽  
Manufacturing Defects ◽  
Infra Red ◽  
Ft Ir ◽  
Ir Microspectroscopy ◽  
Cigarette Manufacturing

AbstractFT-IR microspectroscopy was used to investigate a common type of cigarette defect in which the filter separates from the tobacco rod. Infra-red imagings of the adhesive located at this junction on the tipping papers from both defective and acceptable cigarettes were obtained. A comparison of these data revealed that although adhesive was present in the seam area of the defective cigarettes, the amount of adhesive was significantly less and its distribution was not uniform.

scholarly journals P-066. Fourier transform infra-red (FT-IR) spectroscopy of follicular fluids from antral follicles

1999 ◽  
Vol 14 (Suppl_3) ◽  
pp. 173-174
Author(s):  
N. Thomas ◽  
R. Goodacre ◽  
É.M. Timmins ◽  
P. Mitchell ◽  
M. Jamieson ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Ir Spectroscopy ◽  
Antral Follicles ◽  
Infra Red ◽  
Ft Ir ◽  
Ft Ir Spectroscopy ◽  
Follicular Fluids

Characterizations of Newly Fabricated Composite Materials Based on Organoclay Incorporated Polymeric Matrix

2017 ◽  
Vol 902 ◽  
pp. 79-82
Author(s):  
Bhajan Lal ◽  
Attaullah ◽  
Shafique Ahmed Arain ◽  
Sajid Haleem ◽  
Sagar Kumar
Keyword(s):  
Composite Materials ◽  
Polyacrylic Acid ◽  
Characteristic Peak ◽  
Sem Images ◽  
Porosity Distribution ◽  
Infra Red ◽  
Ft Ir ◽  
Organic Clay ◽  
Ir Analysis ◽  
Scanning Electron

This article reports the synthesis of engineered materials i.e. composite materials based on matrix (polymeric polyacrylic acid) and reinforcement (organic clay) through 6-hour and 12-hour ultrasonication at different intervals. All the precursors and desired composite materials were characterized by Fourier transform infra-red (FT-IR) and scanning electron microscopy (SEM) techniques. The disappearance of Si-O characteristic peak after ultrasonication justifies the fabrication and incorporation of organoclay in the polymeric structure of polyacrylic acid as revealed by FT-IR analysis. The SEM images interpreted the surface morphology, porosity, distribution and compatibility of matrix and reinforcement in it, which has been achieved successfully in this study for exfoliation form.

scholarly journals ISOLASI LIKOPEN DARI BUAH TOMAT (LYCOPERSICUM ESCULENTUM) DENGAN PELARUT HEKSANA

2018 ◽  
Vol 5 (2) ◽  
pp. 123
Author(s):  
Earlyna Sinthia Dewi
Keyword(s):  
Fourier Transform ◽  
Lycopersicum Esculentum ◽  
Infra Red ◽  
Ft Ir

Penelitian ini bertujuan untuk mengembangkan metode sederhana dan efektif  dengan menggunakan ekstraksi pelarut heksana dan methanol sebagai anti pelarut untuk isolasi likopen dari buah tomat (Lycopersicum esculentum). Tomat merupakan  sumber utama likopen. Likopen adalah  zat pigmen golongan karotenoid yang menyebabkan warna merah pada tomat. Penelitian ini telah berhasil mengisolasi likopen dengan metode maserasi. Hasil penelitian menunjukkan dengan pelarut heksana kadar likopen yang diperoleh 2,25 mg/100 g. Analisa gugus fungsi dengan menggunakan spektroskopi Fourier Transform Infra Red (FT-IR) terdeteksi gugus C=C pada panjang gelombang 1537,09 cm-1, gugus CH2 terdeteksi pada panjang gelombang 1498,86 cm-1, gugus R-CH=CH-R terdeteksi pada panjang gelombang 959,27 cm-1. Sedangkan gugus regangan C-C dan C-C-H (streching)masing-masing terjadi pada panjang gelombang 1262,15 cm-1 dan 1378,71 cm-1.

scholarly journals Hydrothermal sulfonation of palm empty fruit bunch carbon as solid acid catalyst and its hydrolysis catalytic activity

2020 ◽  
Author(s):  
Iryanti F. Nata ◽  
Chairul Irawan ◽  
Meilana D. Putra ◽  
Cheng-Kang Lee
Keyword(s):  
Catalytic Activity ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Reducing Sugar ◽  
Empty Fruit Bunch ◽  
Wide Range ◽  
Infra Red ◽  
Ft Ir ◽  
Cassava Peel

Abstract The sulfonated carbon solid acid catalyst (C-SO3H) was successfully generated from palm empty fruit bunch (PEFB) carbon via hydrothermal sulfonation by addition of hydroxyethylsulfonic acid and citric acid. The C-SO3H was identified contain of 1.75 mmol/g of acidity and 40.2% of sulphur. The surface morphology of C-SO3H showed pores with diameters of 3-6 µm and crystalline index (CrI) of material was decreased to 63.8% due to changed structure become carbon. The surface area of carbon was increased significantly from 11.5 to 239.65 m2 g- 1 after hydrothermal treatment. The identification of functional groups of -SO3H, COOH and -OH were detected by Fourier Transform Infra-Red (FT-IR). The optimum catalytic activity of C-SO3H was achieved via hydrolysis reaction with 60.4% of total reducing sugar (TRS) yield. The both concentrations of C-SO3H and cassava peel starch are 5% (w v- 1) at 100 oC for 1 h. Stability of C-SO3H showed good performance for 4th repeated used; it showed insignificant of activity that decreased only of 6%. Thus, the C-SO3H is a candidate for green and potential sulfonated solid acid catalyst for wide range applications.

scholarly journals Hydrothermal Sulfonation of Palm Empty Fruit Bunch Carbon as Solid Acid Catalyst and Its Hydrolysis Catalytic Activity

2020 ◽  
Author(s):  
Iryanti F. Nata ◽  
Chairul Irawan ◽  
Meilana D. Putra ◽  
Cheng-Kang Lee
Keyword(s):  
Catalytic Activity ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Reducing Sugar ◽  
Empty Fruit Bunch ◽  
Wide Range ◽  
Infra Red ◽  
Ft Ir ◽  
Cassava Peel

Abstract The sulfonated carbon solid acid catalyst (C-SO3H) was successfully generated from palm empty fruit bunch (PEFB) carbon via hydrothermal sulfonation by addition of hydroxyethylsulfonic acid and citric acid. The C-SO3H was identified contain of 1.75 mmol/g of acidity and 40.2% of sulphur. The surface morphology of C-SO3H showed pores with diameters of 3-6 µm and crystalline index (CrI) of material was decreased to 63.8% due to changed structure become carbon. The surface area of carbon was increased significantly from 11.5 to 239.65 m2g-1 after hydrothermal treatment. The identification of functional groups of -SO3H, COOH and -OH were detected by Fourier Transform Infra-Red (FT-IR). The optimum catalytic activity of C-SO3H was achieved via hydrolysis reaction with 60.4% of total reducing sugar (TRS) yield. The both concentrations of C-SO3H and cassava peel starch is 5% at 100 oC for 1 h. Stability of C-SO3H showed good performance for 4th repeated used; it showed insignificant of activity that decreased only of 6%. Thus, the C-SO3H is a candidate for green and potential sulfonated solid acid catalyst for wide range applications.

scholarly journals SINTESIS DAN KARAKTERISASI N DOPED TiO2 (N/TiO2) NANOTUBE SERTA UJI AKTIVITAS FOTOKATALISIS TERHADAP ZAT WARNA RHODAMIN B

2021 ◽  
Vol 19 (1) ◽  
pp. 27-32
Author(s):  
Ida Nur Apriani Apriani ◽  
Jarnuzi Gunlazuardi
Keyword(s):  
Fourier Transform ◽  
Tio2 Nanotube ◽  
X Ray Diffraction ◽  
Linear Sweep ◽  
Doped Tio2 ◽  
X Ray ◽  
Infra Red ◽  
Ft Ir ◽  
Rhodamin B ◽  
Scanning Electron

Telah dilakukan sintesis fotokatalis N/TiO2 bermofologi nanotube dengan metode anodisasi  menggunakan ammonium nitrat (NH4NO3) sebagai sumber dopan pada berbagai variasi konsentrasi (0,5M , 1M, 2M), dilanjutkan dengan kalisinasi pada suhu 4500C selama 2 jam untuk mendapatkan fasa kristal anatase. Karakterisasi dilakukan menggunakan Scanning Electron Miscroscopy (SEM), Fourier Transform Infra Red (FT-IR), X-ray Diffraction (XRD), dan DRS (Diffused Reflectant Spectrometry) UV-Vis. Pengujian Linear Sweep Voltametri dan Multi Pulse Anperiometri pada fotokatalis­ N/TiO2 telah berhasil diterapkan untuk degradasi senyawa Rhodamin B menggunakan sinar UV maupun sinar tampak. Aplikasi dari uji fotoelektrokatalisis menggunakan sinar tampak untuk N/TiO2-NT memberikan hasil eliminasi sebesar 47,86%, sedangkan bila menggunakan TiO2 nanotube tanpa dopan eleminasi hanya sebesar 25,49%. Hal ini menunjukkan bahwa proses doping yang dilakukan telah berhasil menyisipkan nitrogen kedalam matrik TiO2 nanotube dan memperbaiki kinerja fotokatalisis nya di daerah sinar tampak.

Sign in / Sign up

Export Citation Format

Share Document