Determination of Cu, Fe and Zn in Silybum marianum seeds after digested using microwave oven by FAAS

A simple and convenient method for the determination of μ g/l level in the real drinking water bromate overcome traditional methods of defects. Argentina by electrolyzing the smallest electrode interference and then focus on extra chlorine use microwave technology foundation evaporation and concentration, the proposed method is very sensitive to the determination of trace level of the sales of the drinking water. And a microwave oven, drinking water ten times the sample can be concentrated in 10 minutes can get and good recovery. Treatment of the silver electrode, the method of interference, and can effectively eliminate the Cl- This method is successfully applied to the detection in water sample level in the trace. It is the advantage of the operation is simple, fast, high sensitivity, accurate results. This method can be applied widely, suitable for trace analysis of water samples.

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Determination of boron in cordierite base composite ceramic powders by ICP-AES after acid decomposition using a microwave oven.

BUNSEKI KAGAKU ◽

10.2116/bunsekikagaku.43.351 ◽

1994 ◽

Vol 43 (4) ◽

pp. 351-354 ◽

Cited By ~ 2

Author(s):

Toshihisa MARUTA ◽

Shigeru YOKOYAMA ◽

Koichi NINOMIYA ◽

Takeshi YAMANE

Keyword(s):

Composite Ceramic ◽

Microwave Oven ◽

Ceramic Powders ◽

Acid Decomposition ◽

Base Composite

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Determination of water content in clay and organic soil using microwave oven

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/43/1/012029 ◽

2016 ◽

Vol 43 ◽

pp. 012029

Author(s):

V V Kramarenko ◽

A N Nikitenkov ◽

I A Matveenko ◽

V Yu Molokov ◽

Ye S Vasilenko

Keyword(s):

Water Content ◽

Organic Soil ◽

Microwave Oven

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Microwave Oven Method for Rapid Determination of Moisture in Meat

Journal of AOAC INTERNATIONAL ◽

10.1093/jaoac/58.6.1188 ◽

1975 ◽

Vol 58 (6) ◽

pp. 1188-1193 ◽

Cited By ~ 1

Author(s):

Julio D Pettinati

Keyword(s):

Rapid Determination ◽

Linear Regression Analysis ◽

Microwave Oven ◽

Moisture Determination ◽

Oven Method ◽

Sources Of Variation ◽

Aoac Method ◽

Air Blower ◽

Meat Samples

Abstract A new, rapid procedure was developed for moisture determination in meat. Results with the method were evaluated by comparative analysis with AOAC method 24.003(b). The new method is accurate, precise, and simple. Samples were prepared for drying by admixture with ferrous oxide and sodium chloride in glass weighing bottles and heating 2.5 mill in a domestic-type 1000 watt microwave oven. After heating, the residues were exposed 1 min in the stream of the oven chamber air blower, then covered and weighed. From comparative determinations on 67 meat samples containing from 3.5 to 77.9% moisture, meat type and moisture level were not significant (P = 0.05) sources of variation as determined by t-tests. Mean moisture content was 0.05% higher by the microwave oven method than by the AOAC method. Repeatability between duplicates was ± 0.47% moisture by microwave oven and ±0.45% by the AOAC method. Precision between paired determinations by the 2 methods was ±0.57% moisture. Both the t-test for significance (P = 0.05) and linear regression analysis of the comparative determinations indicated that the 2 methods were equivalent for determining moisture. Continued study of the method is recommended.

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Rapid determination of calcium, magnesium, sodium and potassium in milk by flame atomic spectrometry after microwave oven digestion

The Analyst ◽

10.1039/an9952000107 ◽

1995 ◽

Vol 120 (1) ◽

pp. 107-111 ◽

Cited By ~ 22

Author(s):

Miguel Angel de la Fuente ◽

Manuela Juárez

Keyword(s):

Rapid Determination ◽

Microwave Oven ◽

Atomic Spectrometry ◽

Calcium Magnesium ◽

Sodium And Potassium

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Simple and Rapid HPLC Separation and Quantification of Flavonoid, Flavonolignans, and 2,3-Dehydroflavonolignans in Silymarin

Foods ◽

10.3390/foods9020116 ◽

2020 ◽

Vol 9 (2) ◽

pp. 116 ◽

Cited By ~ 3

Author(s):

Petrásková ◽

Káňová ◽

Biedermann ◽

Křen ◽

Valentová

Keyword(s):

Analytical Methods ◽

Fourth Century ◽

Preparative Chromatography ◽

Hplc Separation ◽

Silybum Marianum ◽

Chiral Column ◽

Disease Treatment ◽

First Time ◽

Analytical Separation

Herbal preparations from Silybum marianum have been used since the fourth century BC in liver disease treatment and against numerous other pathologies. Consumption of silymarin containing drugs and food supplements continues to increase. Precise, fast, reliable, and complex determination of all components of silymarin preparations is paramount for assessing its pharmacological quality. We present here simple and fast HPLC-DAD and LC-MS analytical methods for the determination and quantification of all known silymarin components, including 2,3-dehydroflavonolignans that has not been achieved so far. The first method, using a common C18 column, allows baseline separation of previously inseparable silychristin A, B, isosilychristin, and silydianin. Moreover, this method allowed detection of three so far unknown silymarin components. In addition, the first analytical separation of enantiomers of 2,3-dehydrosilybin was achieved using a Lux 3μ Cellulose-4 chiral column, providing even more accurate description of silymarin composition. 2,3-Dehydroflavonolignans were isolated for the first time from silymarin using preparative chromatography on C18 and ASAHIPAK columns, and 2,3-dehydrosilychristin and 2,3-dehydrosilybin were for the first time conclusively confirmed by HPLC, MS, and NMR to be silymarin components. Using the optimized analytical methods, six various silymarin preparations were analyzed showing substantial differences in the composition.

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