Rapid method suitable for liquids and powders for determination of relative permittivities in the microwave region

1973 ◽  
Vol 9 (2) ◽  
pp. 39 ◽  
Author(s):  
M. Kent
Keyword(s):  
Rapid Method ◽  
Microwave Region

A Rapid Method for Determination of Buprenorphine and Norbuprenorphine in Urine by UPLC-MS/MS

2020 ◽  
Vol 16 ◽  
Author(s):  
Aykut Kul ◽  
Murat Ozdemir ◽  
Selma Ozilhan ◽  
Olcay Sagirli
Keyword(s):  
Forensic Science ◽  
Rapid Method ◽  
Proficiency Testing ◽  
Mass Spectrometer ◽  
Illicit Market ◽  
Analysis Methods ◽  
Accuracy And Precision ◽  
Lower Limits

Background: Buprenorphine is quite common in the illicit market. Buprenorphine-containing drugs abuse is frequently encountered in patients. The analysis methods used to determine the abuse of buprenorphine and norbuprenorphine are important for forensic science. Buprenorphine is metabolized to norbuprenorphine by the liver. Objective: Therefore, the determination of buprenorphine and norbuprenorphine in urine is one of the methods to determine the abuse of buprenorphine. Methods: In this study, we have developed a precise, simple, and rapid ultra-performance liquid chromatographytandem mass spectrometer method for the determination of buprenorphine and norbuprenorphine simultaneously. Results: The developed method was validated in terms of selectivity and linearity, which was in the range of 9–1800 ng/mL for both buprenorphine and norbuprenorphine. The intra-assay and inter-assay accuracy and precision were found within acceptable limits of the EMA guideline. Lower limits of quantitation were 9 ng/mL for both buprenorphine and norbuprenorphine. Conclusion: The developed method was successfully applied for the determination of both analytes in the proficiency testing samples.

Determination of Dimetridazole and Ipronidazole in Feeds at Cross-Contamination Levels

1988 ◽  
Vol 71 (3) ◽  
pp. 474-477 ◽  
Author(s):  
Duane D Hughes
Keyword(s):  
Thin Layer ◽  
Rapid Method ◽  
Aqueous Phase ◽  
Borate Buffer ◽  
Cross Contamination ◽  
Chromatographic System ◽  
Arsanilic Acid ◽  
Contamination Levels ◽  
Benzene Extract

Abstract A rapid method for the determination of dimetridazole and ipronidazole in feeds is described. The compounds are extracted from a borate buffer (pH 8.65) with benzene, partitioned into IN HC1, and then partitioned back into benzene from a basic aqueous phase. The benzene extract is concentrated and injected onto a nonpolar (Apiezon L) gas chromatographic column for determination by 63Ni electroncapture detection. Recoveries from feeds of various composition, spiked at 0.2 ppm with both dimetridazole and ipronidazole, ranged from 70 to 115%; for the same feeds spiked at 1 ppm or more, the recoveries were greater than 80%. Carbadox, furazolidone, levamisole, oxytetracycline, chlortetracycline, sulfamethazine, sulfaquinoxaline, arsanilic acid, piperazine, penicillin, and commonly added vitamins and minerals do not interfere. A 2-dimensional thin layer chromatographic system is presented as a means of additional identification.

scholarly journals A RAPID METHOD FOR THE DETERMINATION OF CITRIC ACID

1948 ◽  
Vol 175 (2) ◽  
pp. 849-855 ◽  
Author(s):  
Murray. Saffran ◽  
Orville F. Denstedt
Keyword(s):  
Citric Acid ◽  
Rapid Method

A SIMPLE, RAPID METHOD FOR DETERMINATION OF METAL CHELATE STABILITY CONSTANTS

1956 ◽  
Vol 78 (12) ◽  
pp. 2910-2911 ◽  
Author(s):  
R. W. Schmid ◽  
Charles N. Reilley
Keyword(s):  
Rapid Method ◽  
Stability Constants ◽  
Metal Chelate

A rapid method for the determination of glycerophosphorylcholine in rabbit and bull seminal plasma

1974 ◽  
Vol 58 (1) ◽  
pp. 272-275 ◽  
Author(s):  
Roy H. Hammerstedt
Keyword(s):  
Rapid Method ◽  
Seminal Plasma

A Rapid Method for Determination of Progesterone By Reversed-Phase Liquid Chromatography from Aqueous Media

2000 ◽  
Vol 33 (5) ◽  
pp. 881-889 ◽  
Author(s):  
G. R. Pereira ◽  
J. M. Marchetti ◽  
M. V. L. B. Bentley*
Keyword(s):  
Liquid Chromatography ◽  
Rapid Method ◽  
Aqueous Media ◽  
Reversed Phase ◽  
Reversed Phase Liquid Chromatography ◽  
Phase Liquid

Rapid method for the determination of abscisic acid applied to apple leaves

1981 ◽  
Vol 205 (1) ◽  
pp. 199-201 ◽  
Author(s):  
J.G. Allen ◽  
Kathleen J. Hall
Keyword(s):  
Abscisic Acid ◽  
Rapid Method ◽  
Apple Leaves

A rapid method for the determination of palladium by the ring-oven technique

1978 ◽  
Vol 98 (1) ◽  
pp. 145-146 ◽  
Author(s):  
Muhammad Hanif ◽  
Manzoor Ahmad Chaudhry ◽  
Shahnaz Hamdani
Keyword(s):  
Rapid Method ◽  
Ring Oven
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