Flow injection analysis method

Duarte and colleagues used a factorial design to optimize a flow injection analysis method for determining penicillin potentiometricallyd Three factors were studied—reactor length, carrier flow rate, and sample volume, with the high and low values summarized in the following table. 

The various methods that have been outlined in the previous sections are not exclusive and other analytical methods have been used for the determination of methylxanthines in food systems. One of the most widely used methods for food analysis is flow injection analysis (FIA). In a study by Numata,43 a flow injection analysis method for the determination of hypoxanthine in meat was described. 

Methods for determination of thiol drugs (i.e., captopril [21-25], penicillamine [26-28], hydrochlorothiazide [24, 25, 29, 30], and tiopronin [31, 32]) have been developed. These methods are based on CL from a cerium (IV) oxidation system sensitized by adequate fluorophores such as quinine and rhodamine B. By using HPLC-coupled CL-flow-injection analysis method, tiopronin and its metabolite 2-mercaptopropionic acid in human urine were sensitively determined with the detection limits of 0.8 and 1 pM, respectively [32],... 

Tecator Ltd. [16] have described a flow injection analysis method for the determination of 0.2 -1.4 mg/1 (as NH3N) of ammonia nitrogen in soil samples extractable by 2 M potassium chloride. The soil suspension in 2 M potassium chloride is centrifuged and filtered and introduced into the flow injection system for the analysis of ammonia (and nitrate) one parameter at a time. Ammonia is determined by the gas diffusion principle, in which a PTFE membrane is mounted in the gas diffusion cell. 

Espinosa-MansUla A, Mimoz de la Pena A, Salinas F. Semiautomatic determination of furanic aldehydes in food and pharmaceutical samples by a stopped-flow injection analysis method. JAOAC Int 1993 76 1255-1261. 

G.W. Zou, Z. Liu, C.X. Wang, Flow injection analysis methods for determination of diffusion coefficients, Anal. Chim. Acta 350 (1997) 359. 

Spielman A, Garn M B, Aellen T, Haemmerlil S and Widmer H M 1992 Flow injection analysis methods for on-line bioprocess monitoring the automated measurement of some basic medium components and an enzymic product Microbial Principles in Bioprocesses Cell Culture Technology, Downstream Processing and Recovery (DECHEMA Biotechnology Conf. 5, Pt A) pp 367-70... 

Toshiba Corp., Flow-Injection Analysis Method [in Japanese]. Jpn. Kokai Tokkyo Koho, Pat. No. 8561646 (1985). 

T. Korenaga, T. Moriwake, and T. Takahashi, Evaluation of Three Flow Injection Analysis Methods for the Determination of Chemical Oxygen Demand. Mem. Sch. Eng., Okayama Univ., 19 (1984) 53. 

A. G. Fogg, Reverse Flow Injection Formation of Monitorands in Direct and Indirect On-Line Flow Injection Analysis Methods. Analyst, 111 (1986) 859. 

B. Olsson, Immobilized Enzymes in Flow Injection Analysis. Methods with Hydrogen Peroxide Detection. Univ. of Lund, Sweden (1985). (Ph.D. Thesis). 

Flow Injection Analysis Methods for Ascorbic Acid Determination 300... 

Wada, M., M. Kira, H. Kido, R. Ikeda, N. Kuroda, T. Nishigaki, and K. Nakashima. 2011. Semi-micro flow injection analysis method for evaluation of quenching effect of health foods or food additive antioxidants on peroxynitrite. Luminescence 26 191-195. 

Zeng, S. and H. Tan. 2000. Stopped-flow injection analysis method for simultaneous determination of ascorbic acid and L-cysteine. Huaxue Fence 36 439-441. 

Ivekovic, D., S. MilardoviC, M. Roboz et al. 2005. Evaluation of the antioxidant activity by flow injection analysis method with electrochemically generated ABTS radical cation. Analyst 130 708-714. 

A flow injection analysis method for determining low parts per million levels of an amine ethoxylate was based on the chemiluminescence reaction of tertiary amines with hypochlorite ion (129). Because of the low intensity of the chemiluminescence, Rhodamine B is added as a sensitizer. 

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