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Wyświetlanie 1-2 z 2
Tytuł:
A Validated Reverse Phase HPLC Technique for the Determination of TATB Assay
Autorzy:
Bhattacharyya, S. C.
Patil, R. S.
Santosh, M. S. S. N. M.
Bhattacharya, B.
Malik, R. K.
Mehra, A.
Powiązania:
https://bibliotekanauki.pl/articles/951496.pdf
Data publikacji:
2016
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
TATB
HPLC
HPTLC
explosive
LOQ
LOD
Opis:
The main hurdle for the estimation of the purity of 1,3,5-triamino-2,4,6-trinitrobenzene (TATB) is its insolubility in most of the known organic solvents. In the conventional method, TATB is digested with steam in a modified Kjeldahl digester and the ammonia evolved is estimated quantitatively. To do away with this cumbersome method, a simple, rapid HPLC technique using a reverse phase C-18 column has been established for quantitative determination of the purity of TATB. A sharp and symmetrical peak with a retention time of 2.92 min at 355 nm is obtained for pure TATB when the flow rate is 2.0 mL/min. The linearity of the detector response has been studied with sample concentrations ranging from 10 to 50 mg/L. The method addresses two important issues of sample preparation and the precision of measurement. Unlike the previously reported HPLC techniques which mainly aimed at the detection of TATB, the present work is a validated account of a quantitative estimation of purity. Regular production batch samples have been assayed by this method and the results are compared with those obtained from the conventional analysis. The HPLC method is convenient and reliable for quality control of the product at the plant level.
Źródło:
Central European Journal of Energetic Materials; 2016, 13, 3; 641-657
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quantification of triazine herbicides using chloroplasts in conjunction with thin-layer chromatography
Autorzy:
Broszat, M.
Ernst, H.
Spangenberg, B.
Powiązania:
https://bibliotekanauki.pl/articles/363070.pdf
Data publikacji:
2011
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
połączone analizy bioefektywne
derywatyzacja
HPTLC
liniowy zakres kalibracji
kwantyfikacja
TLC
herbicydy triazynowe
video densytometria
bioeffective-linked analysis
derivatization
linear calibration range
quantification
triazine herbicides
videodensitometry
Opis:
We present a video-densitometric quantification method for the triazine herbicides atraton, terbumeton, simazine, atrazine and terbutylazine. Triazine herbicides were separated on silica gel using methyl-t-butyl ether, cyclohexane (1+1, v/v) as mobile phase. The quantification was based on a bioeffective-linked analysis using chloroplast and 2,6-dichlorophenolindophenol. Within 1-2 minutes HILL-reaction inhibitor substances show blue-grey zones on a pale yellowgreen background. To increase the contrast, the moist plate can be dipped into a solution of PEG-600 (10% PEG-600 in methanol) for 2s. Measurements were carried out using a 16 bit ST-1603ME CCD camera with 1.56 megapixels (from Santa Barbara Instrument Group, Inc., Santa Barbara, USA). A white LED was used for illumination purposes. The range of linearity covers more than one magnitude using the (1/R) - 1 expression data transformation. The method can be used for herbicide screenings in environmental samples, because not spectral sensitivity but herbicide activity is measured. The separation method is cheap, fast and reliable.
Źródło:
Environmental Biotechnology; 2011, 7, 2; 47-52
1734-4964
Pojawia się w:
Environmental Biotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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