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Journal articles on the topic 'FIA method'

Author: Grafiati

Published: 4 June 2021

Last updated: 2 February 2022

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1

Carpenter, A. B., and C. D. Bartkowiak. "Rheumatoid factors determined by fluorescence immunoassay: comparison with qualitative and quantitative methods." Clinical Chemistry 35, no. 3 (1989): 464–66. http://dx.doi.org/10.1093/clinchem/35.3.464.

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Abstract Fluorescence immunoassay (FIA), a relatively new technique for measuring rheumatoid factors (RF), is automated, quantitative, and calibrated against the Centers for Disease Control reference material for RF. We studied the FIA method in relation to a panel of RF methods, both qualitative [latex (LA) and sheep cell agglutination (SSCA)], and quantitative [nephelometry and enzyme-linked immunoassay (ELISA)]. Regression analysis revealed a highly significant correlation between FIA and either LA (r = 0.90) or nephelometry (r = 0.87). The correlation between FIA and either SSCA (r = 0.62)

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2

Motomizu, Shoji. "Computer-controlled fluid-flow chemical analysis (CC-FCA) and its application to environmental analytical chemistry." Pure and Applied Chemistry 84, no. 10 (2012): 1999–2013. http://dx.doi.org/10.1351/pac-con-12-02-09.

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Computer-controlled fluid-flow chemical analysis (CC-FCA) was investigated for the determination of trace amounts of toxic pollutants in the environment. For CC-FCA, automated chemical analysis systems were developed by using computer-controllable pumping and valve modules, and polytetrafluorethylene (PTFE) tubing and connectors. The systems demonstrated in this work were a flow injection-type system, a sequential injection-type system, a mini-column pretreatment system (Auto-Pret system), and an Auto-Pret hyphenated with flow injection analysis (FIA) system. Such systems were fully controlled

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3

Sullivan, John J., Thomas A. Hollingworth, Marleen M. Wekell, et al. "Determination of Free (pH 2.2) Sulfite in Wines by Flow Injection Analysis: Collaborative Study." Journal of AOAC INTERNATIONAL 73, no. 2 (1990): 223–26. http://dx.doi.org/10.1093/jaoac/73.2.223.

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Abstract A method for the determination of free sulfite In wine by flow injection analysis (FIA) is described. The method Involves liberation of sulfur dioxide from the wine at pH 2.2, with detection by decolorlzation of a malachite green solution. The method was collaboratively studied, and the results indicated an average reproducibility of 12% for white wine samples (average level 12.1 ppm S02) and 26% for red wine samples (average level 3.1 ppm). When the FIA method was compared to an aeration/oxidation method, the results Indicated a high degree of correlation between the 2 methods. The F

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4

Jericó, Márcia Marques, Berenice Bilharino de Mendonça, Mary Otsuka, Aristides Maganin Jr, and Carlos Eduardo Larsson. "NON-RADIOMETRIC IMMUNOASSAYS [FLUOROIMMUNOASSAY (FIA) AND FLUOROMETRIC ENZYME IMMUNOASSAY (FEIA)] WITH RADIOIMMUNOASSAY (RIA) FOR EVALUATION OF ADRENAL FUNCTION IN NORMAL AND HYPERCORTISOLEMIC DOGS." Ciência Rural 32, no. 2 (2002): 259–62. http://dx.doi.org/10.1590/s0103-84782002000200012.

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Non-radiometric immunoassays offer many advantages over radiometric assays, such as higher stability of kit compounds and absence of potential hazardous effects for users and environment. The comparison of cortisol measurements by fluoroimmunoassay (FIA) and fluorometric enzyme immunoassay (FEIA) with radioimmunoassay (RIA) in adrenal function evaluation of normal (n=50) and hypercortisolemic dogs (n=12) was proposed. Serum concentrations of cortisol were measured in basal conditions and 8 hours after dexamethasone (DEX) suppression (0.01mg/kg/IV). All our reference values were based on the 5t

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Wang, Jing Fang. "Recursive PLS Modeling of Aromatics and Olefins in Gasoline." Advanced Materials Research 740 (August 2013): 267–72. http://dx.doi.org/10.4028/www.scientific.net/amr.740.267.

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The separate calibration models of aromatics and olefins were established for gasoline through recursive partial least square (R-PLS) method in this paper.The some oil refining enterprise application has achieved better effect on the software being realized by R-PLS method. The calibration models were validated through comparison of the results determined by fluorescent indicator adsorption (FIA) and near infrared spectroscopy (NIR) methods.The NIR analysis results were well coincident with those of FIA method.The NIR can not only raise the analysis efficiency and lower the analysis cost,but a

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6

Campı́ns-Falcó, P., F. Bosch-Reig, and F. Blasco-Gómez. "Standard addition method in FIA. Comparison between different assemblies." Analytica Chimica Acta 379, no. 1-2 (1999): 89–97. http://dx.doi.org/10.1016/s0003-2670(98)00658-8.

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7

Sullivan, John J., Thomas A. Hollingworth, Marleen M. Wekell, Richard T. Newton, and Jack E. Larose. "Determination of Sulfite in Food by Flow Injection Analysis." Journal of AOAC INTERNATIONAL 69, no. 3 (1986): 542–46. http://dx.doi.org/10.1093/jaoac/69.3.542.

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Abstract A method is described for the determination of sulfite levels in food products by flow injection analysis (FIA). The method is based on the decolorization of malachite green by S02, which is isolated from the flowing sample stream by means of a gas diffusion cell. The FIA method has a detection limit in food sample extracts of 0.1 ppm S02 (3 times peak height of blank), which corresponds to 1-10 ppm S02 in a food product, depending on the extraction procedure used. At the 5 ppm SO2 level in a food extract, the precision of replicate injections is ± 1-2%. The method was tested on a var

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8

王, 效妍. "The Tax VAT Planning of Power Engineering Business from General Taxation Method Visual Angle." Frontiers of International Accounting 05, no. 04 (2016): 33–37. http://dx.doi.org/10.12677/fia.2016.54005.

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9

Bendtsen, Anders Broe, and Søren Storgaard Jørgensen. "Determination of Total and Free Sulfite in Unstabilized Beer by Flow Injection Analysis." Journal of AOAC INTERNATIONAL 77, no. 4 (1994): 948–51. http://dx.doi.org/10.1093/jaoac/77.4.948.

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Abstract The AOAC methods for the determination of total and free sulfite by flow injection analysis (FIA) were modified for the analysis of unstabilized beer. Suggested improvements to the methods include stabilizing the sulfite standards with EDTA, changing the FIA manifold to decrease the system dispersion, and using a nonlinear calibration curve. The modifications are simple to implement and provide a more stable, sensitive, and accurate method. The method for the determination of free sulfite is criticized, because the dynamic range of the method is very limited. Analysis of several beer

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10

Dekker, L., D. D. E. Zimmerman, R. M. Smeenk, R. Schouten, and I. J. M. Han-Geurts. "Management of cryptoglandular fistula-in-ano among gastrointestinal surgeons in the Netherlands." Techniques in Coloproctology 25, no. 6 (2021): 709–19. http://dx.doi.org/10.1007/s10151-021-02446-3.

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Abstract Background Management of cryptoglandular fistula-in-ano (FIA) can be challenging. Despite Dutch and international guidelines determining optimal therapy is still quite difficult. The aim of this study was to report current practices in the management of cryptoglandular FIA among gastrointestinal surgeons in the Netherlands. Methods Dutch surgeons and residents who are treating FIA regularly were sent a survey invitation by email. The survey was available online from September 19 to December 1 2019. The questionnaire consisted of 28 questions concerning diagnostic and surgical techniqu

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Croci, Luciana, Elisabetta Delibato, Giulia Volpe, Dario De Medici, and Giuseppe Palleschi. "Comparison of PCR, Electrochemical Enzyme-Linked Immunosorbent Assays, and the Standard Culture Method for Detecting Salmonella in Meat Products." Applied and Environmental Microbiology 70, no. 3 (2004): 1393–96. http://dx.doi.org/10.1128/aem.70.3.1393-1396.2004.

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ABSTRACT An electrochemical enzyme-linked immunosorbent assay (ELISA) coupled with flow injection analysis (ELISA-FIA) and a PCR-based method using ST11 and ST15 primers for detecting salmonellae in meat were evaluated in comparison with the International Organization for Standardization (ISO) culture method. The methods were applied to experimentally contaminated and naturally contaminated meat samples. The results showed that both ELISA-FIA and PCR allowed detection of salmonella in a product contaminated with a low number of the microorganisms (1 to 10 salmonellae/25 g) after only 5 h of in

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Piovan, Anna, Raffaella Filippini, and Rosy Caniato. "A Semiquantitative FIA-ESI-MS Method for the Rapid Screening of Hypericum perforatum Crude Extracts." Natural Product Communications 5, no. 3 (2010): 1934578X1000500. http://dx.doi.org/10.1177/1934578x1000500319.

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A method based on FIA-ESI-MS has been developed to profile the major constituents of Hypericum perforatum extracts. The objective was to obtain simultaneous semi-quantitative data on hypericin, chlorogenic acid, rutin, quercitrin, quercetin and hyperforin contents for a high-throughput screening of the raw plant material. The principal drawback of FIA-ESI analysis of complex mixtures involves ion suppression effects: the ionization of some components of the mixture can be severely suppressed by ionization of others. The results show that this problem can be alleviated using a new approach to g

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Changsiripun, Chidsanu, and Darin Pativetpinyo. "Masticatory function after bite-raising with light-cured orthodontic band cement in healthy adults." Angle Orthodontist 90, no. 2 (2019): 263–68. http://dx.doi.org/10.2319/021519-112.1.

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ABSTRACT Objectives: To evaluate the effects of bite-raising with light-cured orthodontic band cement, a method commonly used in contemporary orthodontic treatment, on masticatory function, as assessed by objective and subjective methods. Materials and Methods: The objective evaluation of masticatory performance and subjective evaluation of masticatory ability were performed on 30 healthy volunteers (19 females and 11 males, 22.3 ± 1.56 years) with a normal occlusion. Assessment was performed before and immediately after bite-raising. The bite-raising was done by adding light-cured orthodontic

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14

Spatny, Nina, Stephen J. Haswell, and Manfred Grasserbauer. "FIA method for the determination of vitamin A by iodine." Analytical Proceedings including Analytical Communications 32, no. 4 (1995): 141. http://dx.doi.org/10.1039/ai9953200141.

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15

HOLLINGWORTH, THOMAS A., JAMES M. HUNGERFORD, JAMES D. BARNETT, and MARLEEN M. WEKELL. "Total Volatile Acids: Temperature Dependent Decomposition Indicator in Halibut Determined by Flow Injection Analysis." Journal of Food Protection 57, no. 6 (1994): 505–8. http://dx.doi.org/10.4315/0362-028x-57.6.505.

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Total volatile acids (TVA) is a well known indicator for the decomposition of seafood products. A flow injection analysis (FIA) method, using a gas diffusion cell at elevated temperature, was developed for the determination of TVA in fish and applied to halibut. The FIA method is simple and rapid. The results of this study indicate that the correlation between levels of TVA and degree of decomposition is temperature dependent.

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16

Sullivan, John J., Thomas A. Hollingworth, Marleen M. Wekell, et al. "Determination Of Total Sulfite In Shrimp, Potatoes, Dried Pineapple, And White Wine By Flow Injection Analysis: Collaborative Study." Journal of AOAC INTERNATIONAL 73, no. 1 (1990): 35–42. http://dx.doi.org/10.1093/jaoac/73.1.35.

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Abstract A method for the determination of total sulfite in shrimp, potatoes, dried pineapple, and white wine by flow injection analysis (FIA) was collaboratively studied by 8 laboratories. In the method, the sample solution Is reacted with sodium hydroxide to liberate aldehyde-bound sulfite. The sample stream is acidified to produce S02 gas, which diffuses across a Teflon membrane in the gas diffusion cell into a flowing stream of malachite green. The degree of discoloration of the malachite green is proportional to the amount of sulfite in the sample solution. Red wine was included in the st

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17

Kubáň, Vlastimil, and Dimitrii Borisovich Gladilovich. "Simultaneous determination of iron and copper in waters by multiligand flow injection analysis." Collection of Czechoslovak Chemical Communications 53, no. 7 (1988): 1461–75. http://dx.doi.org/10.1135/cccc19881461.

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Optical characteristics were measured and optimum conditions established for the simultaneous spectrophotometric determination of iron and copper with reagent mixtures of disodium bathocuproinedisulfonate (I) with disodium bathofenanthrolinedisulfonate (II) or ferrospectral (III) in static or dynamic (FIA) conditions. In the FIA method suggested, 30μl water samples containing Fe and Cu in concentration ratios 1 : 10 to 10 : 1 are injected into a stream of I-II mixed reagent at c(I) = 0·6 mmol l-1 and c(II) = 0·2 mmol l-1 in a medium of 0·1M formate buffer pH 3·5 and 0·01M ascorbic acid; for th

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18

Grünhut, Marcos, Miriam E. Palomeque, Adriana G. Lista, and Beatriz S. Fernández Band. "Enzymatic reverse FIA method for total phenols determination in urine samples." Talanta 71, no. 4 (2007): 1520–23. http://dx.doi.org/10.1016/j.talanta.2006.07.032.

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19

Hassan, R. O., and A. T. Faizullah. "Reverse-FIA with spectrophotometric detection method for determination of vitamin C." Journal of the Iranian Chemical Society 8, no. 3 (2011): 662–73. http://dx.doi.org/10.1007/bf03245898.

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20

Lolic, Aleksandar, Snezana Nikolic-Mandic, and Predrag Polic. "Optimization and application of the gas-diffusion flow injection method for the determination of chloride." Journal of the Serbian Chemical Society 66, no. 9 (2001): 637–46. http://dx.doi.org/10.2298/jsc0109637l.

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A selective and sensitive procedure for the fast and indirect determination of chloride by the gas-diffusion FIA method has been optimized and applied for the determination of chloride in water samples which contained different amounts of the analyte. The examined samples were: seawater, tap water and very pure water from the water- steam system of the power plant ?Nikola Tesla B? in Obrenovac. Application of an amperometric detector (model LC-17A; BAS, West Lafayette, USA) enables the detection limit to be decreased down to 0.05 ?mol/dm3 of chloride, which corresponds to 35.5 pg, and adjustme

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21

Archontaki, H. A., and S. R. Crouch. "Evaluation of an Isolated Droplet Sample Introduction System for Laser-Induced Breakdown Spectroscopy." Applied Spectroscopy 42, no. 5 (1988): 741–46. http://dx.doi.org/10.1366/0003702884429049.

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An isolated droplet generator (IDG) has been used as a novel solution sample introduction system for laser-induced breakdown spectroscopy (LIBS). The IDG converts liquid samples to equally-spaced, uniform-sized droplets. The droplets are introduced into the region where a high-powered Nd:YAG laser beam is focused. The resulting analyte emission is spectrally and temporally resolved. The dependence of analyte emission intensity on several parameters (droplet radius, droplet production frequency, etc.) is examined. A flow injection analysis (FIA) manifold has been used to introduce samples to th

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22

Ljunggren, Esbjörn, and Bo Karlberg. "Determination of total carbon dioxide in beer and soft drinks by gas diffusion and flow injection analysis." Journal of Automatic Chemistry 17, no. 3 (1995): 105–8. http://dx.doi.org/10.1155/s1463924695000186.

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A gas diffusion FIA method for determination of total CO2in beer and in soft drinks is described. The composition of the acceptor stream for diffused carbon dioxide is critical. Bromocresol purple has been selecled among a large number of tested pH indicators and if the detection is made at a wavelength of 430 nm, stable baseline conditions and positive deflections of the resulting FIA peaks are obtained. The selected indicator is combined with a linear pH buffer. A simple and practical graphical method for determining a suitable starting pH of the acceptor stream, as well as the expected dyna

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Johnson, Sarah E., E. L. Mudrak, E. A. Beever, S. Sanders, and D. M. Waller. "Comparing power among three sampling methods for monitoring forest vegetation." Canadian Journal of Forest Research 38, no. 1 (2008): 143–56. http://dx.doi.org/10.1139/x07-121.

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We compared three methods of sampling forest vegetation for their ability to reliably estimate changes in species richness, plant abundance, and overstory basal area and composition. Methods include the US Forest Service’s Forest Inventory and Analysis (FIA) method and two other methods being considered for use in monitoring National Parks in the Northern Great Lakes ecoregion. All methods were successful at detecting changes in composite variables but lacked sufficient enough power to detect a 20% change in the abundance of most individual species. All three methods had high power for detecti

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OZAKI, Shigeko, Ryosuke MORIUCHI, and Eiko NAKAMURA. "Distillation Method Using Miniature Apparatus for Determination of Total Cyanide by FIA." BUNSEKI KAGAKU 61, no. 11 (2012): 953–57. http://dx.doi.org/10.2116/bunsekikagaku.61.953.

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Bompadre, Stefano, Luciana Leone, Alessia Politi, and Maurizio Battino. "Improved FIA-ABTS Method for Antioxidant Capacity Determination in Different Biological Samples." Free Radical Research 38, no. 8 (2004): 831–38. http://dx.doi.org/10.1080/10715760410001715158.

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Osborne, Owen D., Allan Pring, and Claire E. Lenehan. "A simple colorimetric FIA method for the determination of pyrite oxidation rates." Talanta 82, no. 5 (2010): 1809–13. http://dx.doi.org/10.1016/j.talanta.2010.07.086.

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AOYAGI, Masaya, Yoshiaki YASUMASA, and Akemi NISHIDA. "Digestion method for FIA of phosphorus and nitrogen in hydrogen peroxide solution." Bunseki kagaku 39, no. 2 (1990): 131–33. http://dx.doi.org/10.2116/bunsekikagaku.39.2_131.

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Richter, P., J. M. Fernández-Romero, M. D. Luque de Castro, and M. Valcárcel. "Integrated FIA/HPLC method for preconcentration and determination of transition metal ions." Chromatographia 34, no. 9-10 (1992): 445–49. http://dx.doi.org/10.1007/bf02290233.

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Fraser, Jacob S., Wen J. Wang, Hong S. He, and Frank R. Thompson. "Modeling Post-Fire Tree Mortality Using a Logistic Regression Method within a Forest Landscape Model." Forests 10, no. 1 (2019): 25. http://dx.doi.org/10.3390/f10010025.

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Fire is a multi-scale process that is an important component in determining ecosystem age structures and successional trajectories across forested landscapes. In order to address questions regarding fire effects over large spatial scales and long temporal scales researchers often employ forest landscape models which can model fire as a spatially explicit disturbance. Within forest landscape models site-level fire effects are often simplified to the species, functional type, or cohort level due to time or computational resource limitations. In this study we used a subset of publicly available U

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Hadad, Ghada, Randa Abdel-Salam, and Samy Emara. "Optimized and validated flow-injection spectrophotometric analysis of topiramate, piracetam and levetiracetam in pharmaceutical formulations." Acta Pharmaceutica 61, no. 4 (2011): 377–89. http://dx.doi.org/10.2478/v10007-011-0038-y.

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Optimized and validated flow-injection spectrophotometric analysis of topiramate, piracetam and levetiracetam in pharmaceutical formulationsApplication of a sensitive and rapid flow injection analysis (FIA) method for determination of topiramate, piracetam, and levetiracetam in pharmaceutical formulations has been investigated. The method is based on the reaction withortho-phtalaldehyde and 2-mercaptoethanol in a basic buffer and measurement of absorbance at 295 nm under flow conditions. Variables affecting the determination such as sample injection volume, pH, ionic strength, reagent concentr

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31

Koch, Sarah, Sean Michael Sinden, and Michael Stephen Koehle. "Inconsistent calculation methodology for the eucapnic voluntary hyperpnoea test affects the diagnosis of exercise-induced bronchoconstriction." BMJ Open Respiratory Research 5, no. 1 (2018): e000358. http://dx.doi.org/10.1136/bmjresp-2018-000358.

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IntroductionThe eucapnic voluntary hyperpnoea (EVH) challenge is used to screen for exercise-induced bronchoconstriction. Several criteria have been proposed to determine the decrease in lung function (fall index, FI) following EVH. We compared three published FI calculation methods to determine if they affect the diagnostic classification.MethodsThe three FIs were calculated for 126 EVH tests. Spirometry was performed in duplicate at baseline and repeated 3, 5, 10, 15 and 20 min following 6 min of EVH. The higher of the two forced expiratory volume in 1 s (FEV1) measures at all time-points po

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32

Zhang, Hong, and Wen Fa Xiao. "Pour Point Depressant(PPD) and Flow Improver Additives (FIA) of Crude Oil and its Study Method Progress." Advanced Materials Research 524-527 (May 2012): 1844–47. http://dx.doi.org/10.4028/www.scientific.net/amr.524-527.1844.

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The situation of low temperature crude oil pipeline carrying is universal. The rapid developing of pipe line supposes higher asking on new carrying technology. The problem of long distance carrying at normal temperature of high waxy crude oil is impel to resolve and its potential social economic profit is obvious. As the pipeline is designed at high production period of field so there must have low carrying situation at beginning and ending time. At the situation the high waxy crude oil and high pour point crude oil will face on great resistance and blockage problem. Further more the pipeline

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Kholifa, Mulik, Tri Mulyono, and Yeni Maulidah Muflihah. "Simultaneous Determination of Magnesium (Mg2+) and Ammonium (NH4+) by Flow Injection Analysis." Jurnal ILMU DASAR 19, no. 1 (2018): 1. http://dx.doi.org/10.19184/jid.v19i1.5483.

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An automatic method for the simultaneous determination of magnesium and ammoniun by flow injection analysis is described. This analysis used two detectors, potentiometry and spectrophotometry, for the determination of magnesium and ammonium simultaneously. Potentiometric detectors are used to detect ammonium ions, whereas spectrophotometer detectors are used to detect the presence of magnesium ions. The performance of the FIA system includes linear range linearity, limit of detection, sensitivity, reproducibility and recovery test. Spectrophotometry FIA showed good performance with several cri

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Ferreira, Edilene C., Gilberto B. Souza, and Ana Rita A. Nogueira. "FIA-FAAS method for tannin determination based on a precipitation reaction with hemoglobin." Journal of the Brazilian Chemical Society 14, no. 2 (2003): 329–33. http://dx.doi.org/10.1590/s0103-50532003000200023.

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Journal, Baghdad Science. "New Method for the Determination of DL-Histidine by FIA and Chemiluminometric Detection." Baghdad Science Journal 7, no. 2 (2010): 927–38. http://dx.doi.org/10.21123/bsj.7.2.927-938.

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This paper present a simple and sensitive method for the determination of DL-Histidine using FIA-Chemiluminometric measurement resulted from oxidation of luminol molecule by hydrogen peroxide in alkaline medium in the presence of DL-Histidine. Using 70?l. sample linear plot with a coefficient of determination 95.79% for (5-60) mmol.L-1 while for a quadratic relation C.O.D = 96.44% for (5-80) mmol.L-1 and found that guadratic plot in more representative. Limit of detection was 31.93 ?g DL-Histidine (S/N = 3), repeatability of measurement was less that 5% (n=6). Positive and negative ion interfe

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GOTO, Masashi, and Mikio KOBAYASHI. "Development of a determination method for acetylcholinesterase activity by FIA with electrochemical detection." Bunseki kagaku 46, no. 4 (1997): 293–96. http://dx.doi.org/10.2116/bunsekikagaku.46.293.

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WATANABE, Kunihiro, Takashi OSAWA, Junichi IWATA, and Masayuki ITAGAKI. "Spectrophotometric Determination of Arsenic in Steels by FIA Using Filter-Tube Concentration Method." BUNSEKI KAGAKU 55, no. 4 (2006): 251–57. http://dx.doi.org/10.2116/bunsekikagaku.55.251.

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Alonso, J., J. Bartroli, J. Coello, and M. del Valle. "Simultaneous Optimization of Variables in Fia Systems by Means of the Simplex Method." Analytical Letters 20, no. 8 (1987): 1247–63. http://dx.doi.org/10.1080/00032718708064606.

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Pfaffen, Valeria, Sonia N. Faudone, Norma R. Sperandeo, Silvia L. Cuffini, and Patricia I. Ortiz. "Determination of Azithromycin by an Alternative FIA Amperometric Method for Different Pharmaceutical Applications." Industrial & Engineering Chemistry Research 52, no. 14 (2013): 4973–77. http://dx.doi.org/10.1021/ie3027845.

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40

Tripathi, A. N., S. ehikhalikar, and K. S. Patel. "Flow injection analysis of iron in rain water with thiocyanate and surfactant." Journal of Automatic Chemistry 19, no. 2 (1997): 45–50. http://dx.doi.org/10.1155/s1463924697000072.

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This paper explains a new procedure for flow injection analysis (FIA) determination of iron in rain water based on the colour reaction of Fe3+with thiocyanate ions in the presence of the cationic surfactant cetylpyridinium chloride (CPC). The value of apparent molar absorptivity of the complex in terms of iron is (2.00) x 104l mole-1cm-1at an absorption maximum of 490 nm. The detection limit of the method is 8 ppb Fe. The sample throughput is 90 samples/h at a flow rate of 4.0 ml/min. The reaction mechanism, optimization of FIA variables, and effect of various types of surfactant are described

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41

Abreu Jr., Cassio Hamilton, Takashi Muraoka, and André Fernando Lavorante. "Exchangeable aluminum evaluation in acid soils." Scientia Agricola 60, no. 3 (2003): 543–48. http://dx.doi.org/10.1590/s0103-90162003000300020.

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One of the main factors limiting agricultural production in tropical climate regions is mainly related to the presence of exchangeable aluminum (Al3+) in highly weathered acid soils. Four methods of Al3+ determination extracted with neutral 1 mol L¹ KCl solution were evaluated: three colorimetric methods (aluminon plus ascorbic acid, and eriochrome cyanine R by FIA) and the usual titrimetric method with back-titration. Surface samples from 20 soils of different Brazilian regions, with active acidity (0.01 mol L¹ CaCl2 pH) ranging from very high to medium (3.82 to 5.52), were used. The variance

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Journal, Baghdad Science. "Batch and Flow-Injection Spectrophotometric Determination of Procaine HCl in Pharmaceutical Preparations Via Using Diazotization and Coupling Reaction." Baghdad Science Journal 9, no. 3 (2012): 521–31. http://dx.doi.org/10.21123/bsj.9.3.521-531.

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Simple and sensitive batch and Flow-injection spectrophotometric methods for the determination of Procaine HCl in pure form and in injections were proposed. These methods were based on a diazotization reaction of procaine HCl with sodium nitrite and hydrochloric acid to form diazonium salt, which is coupled with chromatropic acid in alkaline medium to form an intense pink water-soluble dye that is stable and has a maximum absorption at 508 nm. A graphs of absorbance versus concentration show that Beer’s law is obeyed over the concentration range of 1-40 and 5-400 µg.ml-1 of Procaine HCl, with

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Finster, P., J. Hollweg, E. Kausch, and U. Burmester. "Automated Tobacco Investigation Using Flow-Injection Analysis (FIA) - AutomatisierteTabakuntersuchungmittelsFliessinjektionsanalyse (FlA)." Beiträge zur Tabakforschung International/Contributions to Tobacco Research 14, no. 2 (1988): 105–18. http://dx.doi.org/10.2478/cttr-2013-0590.

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AbstractWatery tobacco extracts were examined with the aid of flow-injection analysis (FIA) for the substances nicotine, nitrate, chloride, ammonium and phosphate. The results proved to be exact and reproducible for the most part and the speed of analysis was between 37 and 113 measurements per hour. Because of its simple modular design the appliance is flexible in its application and is above all suited for the analysis for several components in small series of samples. A special FIA technique (stopped-flow method) enables the undersurface absorption stemming from the sample matrix to be excl

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Catarino, Rita I. L., M. Beatriz Q. Garcia, Rui A. S. Lapa, José L. F. C. Lima, and Enrique Barrado. "Sequential Determination of Salicylic and Acetylsalicylic Acids by Amperometric Multisite Detection Flow Injection Analysis." Journal of AOAC INTERNATIONAL 85, no. 6 (2002): 1253–59. http://dx.doi.org/10.1093/jaoac/85.6.1253.

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Abstract An amperometric multisite detection flow injection analysis (FIA) system was developed for sequential determination of 2 analytes with a single sample injection and single detector. Tubular composite carbon electrodes with an inner diameter similar to that of the FIA manifold tubing were constructed so that measurements could be made without impairing the sample plug hydrodynamic characteristics. The electrochemical behavior of the tubular voltammetric cell in a low-dispersion FIA manifold and the behavior of the FIA system incorporating this type of voltammetric cell intended for mul

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Palomeque, M. E., A. G. Lista, and B. S. Fernández Band. "Determination of V(V) by a kinetic stopped-flow FIA method with spectrophotometric detection." Analytica Chimica Acta 366, no. 1-3 (1998): 287–93. http://dx.doi.org/10.1016/s0003-2670(98)00116-0.

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NISHIKAWA, Yasuhiko, Fujio MORISHITA, and Tsugio KOJIMA. "Determination of urate by a FIA method using a uricase-immobilized open-tubular reactor." Bunseki kagaku 35, no. 7 (1986): 575–78. http://dx.doi.org/10.2116/bunsekikagaku.35.7_575.

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Hu, Bin, Yong Huang, and Fang Wang. "FIA method for LBO limit predictions of aero-engine combustors based on FV model." Aerospace Science and Technology 28, no. 1 (2013): 435–46. http://dx.doi.org/10.1016/j.ast.2013.01.002.

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Pistón, Mariela, and Moisés Knochen. "Determination of Total Selenium in Infant Formulas: Comparison of the Performance of FIA and MCFA Flow Systems." International Journal of Analytical Chemistry 2012 (2012): 1–7. http://dx.doi.org/10.1155/2012/918292.

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Two flow methods, based, respectively, on flow-injection analysis (FIA) and on multicommutated flow analysis (MCFA), were compared with regard to their use for the determination of total selenium in infant formulas by hydride-generation atomic absorption spectrometry. The method based on multicommutation provided lower detection and quantification limits (0.08 and 0.27 μg L−1compared to 0.59 and 1.95 μ L−1, resp.), higher sampling frequency (160versus. 70 samples per hour), and reduced reagent consumption. Linearity, precision, and accuracy were similar for the two methods compared. It was con

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Goudar, Bhimanagouda V., and Nawaz M. Dakhani. "A comparative study of Ligation of Intesphincteric Fistula Tract versus conventional fistulectomy in management of low fistula in ano: a randomized control trial." International Surgery Journal 8, no. 1 (2020): 261. http://dx.doi.org/10.18203/2349-2902.isj20205890.

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Background: Fistula in ano (FIA) is a chronic complex condition of ano-rectal sepsis characterized by cylical-pain and intermittent chronic purulent discharge. The management of fistula is challenging. In spite of all the advances in the management of FIA, no single method is univresally applicable to all types of FIA due to incontinence and recurrences associated with the individual procedures.Methods: Aims of this study were to compare the outcomes between ligation of intersphincteric fistula tract (LIFT) and conventional fistulectomy (CF) with 60 patients randomized into 2 groups, 30 in eac

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Dantan, N. "Determination of water traces in various organic solvents using Karl Fischer method under FIA conditions." Talanta 52, no. 1 (2000): 101–9. http://dx.doi.org/10.1016/s0039-9140(00)00328-3.

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