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

scholarly journals Identification of a Glass Substrate to Study Cells Using Fourier Transform Infrared Spectroscopy: Are We Closer to Spectral Pathology?

2019 ◽  
Vol 74 (2) ◽  
pp. 178-186 ◽  
Author(s):  
Abigail V. Rutter ◽  
Jamie Crees ◽  
Helen Wright ◽  
Marko Raseta ◽  
Daniel G. van Pittius ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Cancer Cells ◽  
Cell Line ◽  
Glass Substrate ◽  
Fourier Transform Infrared ◽  
Leukemia Cell Line ◽  
Different Types ◽  
Ft Ir ◽  
Fingerprint Region ◽  
Ir Microspectroscopy

The rising incidence of cancer worldwide is causing an increase in the workload in pathology departments. This, coupled with advanced analysis methodologies, supports a developing need for techniques that could identify the presence of cancer cells in cytology and tissue samples in an objective, fast, and automated way. Fourier transform infrared (FT-IR) microspectroscopy can identify cancer cells in such samples objectively. Thus, it has the potential to become another tool to help pathologists in their daily work. However, one of the main drawbacks is the use of glass substrates by pathologists. Glass absorbs IR radiation, removing important mid-IR spectral data in the fingerprint region (1800 cm−1 to 900 cm−1). In this work, we hypothesized that, using glass coverslips of differing compositions, some regions within the fingerprint area could still be analyzed. We studied three different types of cells (peripheral blood mononuclear cells, a leukemia cell line, and a lung cancer cell line) and lymph node tissue placed on four different types of glass coverslips. The data presented here show that depending of the type of glass substrate used, information within the fingerprint region down to 1350 cm−1 can be obtained. Furthermore, using principal component analysis, separation between the different cell lines was possible using both the lipid region and the fingerprint region between 1800 cm−1 and 1350 cm−1. This work represents a further step towards the application of FT-IR microspectroscopy in histopathology departments.

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 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.

scholarly journals Sintesis dan Karakterisasi CNT (Carbon Nanotube) Berdopan Logam Kobalt

2014 ◽  
Vol 17 (3) ◽  
pp. 80-85
Author(s):  
Nur Dwi Lestari ◽  
Pardoyo Pardoyo ◽  
Agus Subagio
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Fourier Transform ◽  
Carbon Nanotube ◽  
Energy Dispersive ◽  
Gas Sorption ◽  
X Ray ◽  
Infra Red ◽  
Ft Ir ◽  
Scanning Electron

Telah dilakukan penelitian sintesis dan karakterisasi CNT (Carbon Nanotube) dengan doping logam kobalt. Penelitian ini bertujuan untuk menentukan karakter CNT sebelum dan setelah didoping dengan variasi konsentrasi logam 10%, 20%, 30%, 40% dan 50%. Metode yang digunakan pada penelitian ini adalah impregnasi basah yang meliputi perendaman pada larutan logam dan kalsinasi. Hasil impregnasi dianalisis menggunakan Fourier Transform-Infra Red (FT-IR), GSA (Gas Sorption Analysis), Scanning Electron Microscopy (SEM) dan Energy Dispersive X-Ray Spectroscopy (EDS). Analisis FT-IR menunjukkan adanya vibrasi ulur dari ikatan Co-C dan Co-O.  Hasil GSA menunjukkan bahwa CNT loading 30% mempunyai luas permukaan tertinggi yaitu 69,192 m2/g. Hasil SEM-EDS menunjukkan bahwa morfologi permukaan dinding CNT ditutupi aggregat-aggregat kobalt. Pada hasil EDS fraksi kobalt dihasilkan adalah 1,96 % yang nilainya tidak jauh berbeda dari fraksi Fe yaitu 1,49%. Hal ini menunjukkan bahwa CNT doping logam Co menggunakan metode impregnasi basah tidak efektif.

scholarly journals The Commercial Development of FT-IR Microspectroscopy

1993 ◽  
Vol 1 (3) ◽  
pp. 6-7
Author(s):  
John A. Reffner
Keyword(s):  
Fourier Transform ◽  
World War Ii ◽  
World War ◽  
Commercial Development ◽  
10Th Anniversary ◽  
Infrared Microspectroscopy ◽  
Fourier Transform Infrared Microspectroscopy ◽  
Ft Ir ◽  
Ir Microspectroscopy ◽  
Ft Ir Spectroscopy

Pittcon ‘93 marked the 10th anniversary of the introduction of a microscope attachment designed specifically for Fourier transform infrared microspectroscopy. The first commercial microscope developed for FT-IR spectroscopy was designed by Spectra-Tech, Inc., under the direction of then-owner D. W. Sting, in fulfillment of a contract with C. T. Foskett of the Digilab Division of BioRad. Digilab recognized a growing interest in the market for an FT-IR microscope and contracted with Spectra-Tech to design and build a microscope accessory for Digilab's FT-IR spectrometers. This microscope was introduced at the 1983 Pittsburgh Conference.Linking microscopy with Fourier transform spectroscopy was a very significant event, but the foundation of infrared microspectroscopy can be traced back to 1949. The explosive growth in the use of infrared-absorption spectroscopy following World War II led researchers R. Gore (in the U.S.A.), and R. Barer, A. R. Cole, and H. W. Thompson (in England), to investigate (in 1949) the possibility of recording infrared spectra of microscopic samples.

A Method For Analysis Of Clinical Tissue Samples Using Ft-Ir Microspectroscopic Imaging

1999 ◽  
Vol 5 (S2) ◽  
pp. 68-69
Author(s):  
Gloria M. Story ◽  
Curtis Marcott ◽  
Rina K. Dukor
Keyword(s):  
Fourier Transform ◽  
Focal Plane ◽  
Mercury Cadmium Telluride ◽  
Single Element ◽  
Imaging Studies ◽  
Pathology Laboratory ◽  
Tissue Samples ◽  
The Past ◽  
Ft Ir ◽  
Ir Microspectroscopy

During the past decade, Fourier transform infrared (FT-IR) microspectroscopy has been used successfully in many studies to differentiate normal and diseased tissue samples obtained from a variety of organs, including colon, cervix, prostate, and breast. IR images were constructed by collecting spectra point-by-point using a mapping stage on a FT-IR microscope equipped with a single-element detector. Five years ago, in collaboration with NIH scientists Dr. Neil Lewis and Dr. Ira Levin, Procter and Gamble researchers developed a technique for performing vibrational spectroscopic imaging microscopy using a liquid-nitrogen-cooled focal-plane array (FPA) detector and a step-scanning FT-IR spectrometer coupled to a refractive microscope. With this configuration, equipped with a new 64-pixel x 64-pixel Mercury-Cadmium-Telluride (MCT) FPA detector, we are able to image an 800-μm x 800-μm area of a specimen without moving the sample.For all of these IR imaging studies, the tissue samples were prepared in a manner that was special and different from that commonly used in a pathology laboratory, i.e.,the histopathology sample was not identical to the spectroscopic sample.

Fourier Transform Infrared (FT-IR) Microspectroscopy of 20th Century Russian Oil Paintings: Problem of Dating

2016 ◽  
Vol 70 (7) ◽  
pp. 1150-1156 ◽  
Author(s):  
Irina A. Balakhnina ◽  
Nikolay N. Brandt ◽  
Andrey Yu Chikishev ◽  
Yurii I. Grenberg ◽  
Irina A. Grigorieva ◽  
...  
Keyword(s):  
Fourier Transform ◽  
20Th Century ◽  
Fourier Transform Infrared ◽  
Oil Paintings ◽  
Ft Ir ◽  
Ir Microspectroscopy

scholarly journals Identifikasi Senyawa Kimia Aktif Antioksidan Dari Ekstrak Etil Asetat Buah Andaliman (Zanthoxylum acanthopodium DC)

2018 ◽  
Vol 1 (3) ◽  
pp. 162-166
Author(s):  
Wiwi Winarti ◽  
Partomuan Simanjuntak ◽  
Muhammad Fahmi Syahidin
Keyword(s):  
Antioxidant Activity ◽  
Fourier Transform ◽  
Free Radical ◽  
Vitamin C ◽  
Ethyl Acetate ◽  
Positive Control ◽  
Fruit Extract ◽  
Stomach Pain ◽  
Infra Red ◽  
Ft Ir

Buah andaliman, (Zanthoxylum acanthopodium DC),banyak dikonsumsi oleh masyarakat sebagai bumbu makanan dan obat tradisional seperti obat sakit perut, tonikum, dan anti mikroba. Penelitian ini bertujuan untuk mengidentifikasi senyawa yang berkhasiat sebagai antioksidan dari ekstrak buah andaliman. Ekstraksi dilakukan secara maserasi kinetik menggunakan pelarut n-heksan, dan etil asetat. Ekstrak kental yang diperoleh kemudian diuji aktivitas antioksidan dengan metode peredaman radikal bebas menggunakan DPPH. Sebagai kontrol positif digunakan vitamin C. Selanjutnya dilakukan pemurnian dengan kromatografi kolom sampai diperoleh isolat EA.X.6.1 yang mempunyai aktivitas antioksidan tertinggi. Hasil uji aktivitas antioksidan dengan metode peredaman radikal bebas DPPH (1,1-difenil-2-pikrilhidrazil) menunjukkan bahwa ekstrak etil asetat buah andaliman mempunyai aktivitas antioksidan dengan nilai IC50 sebesar 66,91 bpj, dan isolat EA.X.6.1 yang memiliki aktivitas antioksidan tertinggi dengan nilai IC50 sebesar 135,58 bpj. Berdasarkan hasil analisis dengan spektrofotometri UV-Vis, spektrofotometri Fourier Transform Infra Red (FT- IR) dan Kromatografi Gas-Spektrometri Massa (KG-SM) diduga senyawa aktif antioksidan yang terdapat dalam ekstrak etil asetat buah andaliman adalah 2-metoksi-4-vinilfenol.   Andaliman fruit, (Zanthoxylum acanthopodium DC), is widely consumed by people as a food spice and traditional medicine to treat stomach pain, tonic, and as anti-microbial drugs. This study aimed to identify compounds that wereefficacious as antioxidants of andaliman fruit extract. The extraction was performed by kinetic maceration method using n-hexane and ethyl acetate. Then, the crude was tested for its antioxidant activity by free radical DPPH scavenging method. Vitamin C was used as  a positive control. Furthermore, the extract was purified by column chromatography to obtain isolate  EA.X.6.1 which has the highest antioxidant activity. The results of evaluation on antioxidant activity by free radical DPPH (1,1-difenil-2-pikrilhidrazil)scavenging method showed that ethyl acetate andaliman fruit extract revelaed antioxidant activity with IC50value of 66,91 bpj and isolate EA.X.6.1 which showed the highest antioxidant activity with IC50value of 135,58 bpj. Based on analysis using UV-Vis spectrophotometer, spectrophotometer Fourier Transform Infra Red (FT- IR) and Gas Chromatography- Mass Spectrophotometry (GC-MS), it was considered that antioxidant chemical active compound in ethyl acetate andaliman fruit extract was 2-methoxy-4-vinylphenol

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