scholarly journals Simple Design Flow Analysis System for Determination of Iron by Spectrophotometric method

2016 ◽  
Vol 16 (2) ◽  
pp. 89
Author(s):  
Wiwin Setiani ◽  
Tri Mulyono ◽  
Asnawati Asnawati
Keyword(s):  
Flow Rate ◽  
Spectrophotometric Method ◽  
Systems Analysis ◽  
System Analysis ◽  
Flow System ◽  
Analysis Method ◽  
Batch Method ◽  
Flow Systems ◽  
Simple Flow

The purpose of this research is to make a series of analyzes using a flow system with a bottle Marriote as pump and spectrophotometric method for determining the content of iron in water samples. Determination of iron by this method used 1,10-fenantrolin complexing or 2,2-bipyridyl. In this method, Fe3+ is reduced to Fe2+ prior complexed with iron to form a specific color and then flowed it through a marriote bottle next to the spectrophotometer detector. The average flow rate of the liquid in the bottle Marriote amounted to 0.037 mL / sec. Limit detection obtained in the batch is 0.00017 ppm and 0.00023 ppm in simple flow systems analysis methods. Sensitivity obtained in the batch method is 0.027 and the simple flow system analysis method is 0.035. Flow rate precision values are expressed Marriote bottle with Kv values <5%. Values accuracy expreced percenting of recovery was 99% in the batch method, whereas the simple flow system analysis method was 98.5%. Results of t-test analysts suggest that iron determination using flow systems analysis (FIA) with the replacement pump bottle Marriote not differ significantly from the results obtained with the batch system.   Keywords: batch method, bottle Marriote, Flow Injection Analysis, spectrofotometry

Groundwater flow systems analysis on a regional and nation-wide scale in the Netherlands; the use of flow systems analysis in wetland management

1995 ◽  
Vol 31 (8) ◽  
pp. 375-378 ◽  
Author(s):  
F. H. Kloosterman ◽  
R. J. Stuurman ◽  
R. van der Meijden
Keyword(s):  
The Netherlands ◽  
Groundwater Flow ◽  
Systems Analysis ◽  
System Analysis ◽  
Drainage Basin ◽  
Flow System ◽  
Wetland Management ◽  
Groundwater Flow Systems ◽  
Flow Systems ◽  
Strong Relation

The project “National Groundwater Flow System Analysis” in The Netherlands was initiated in 1991 and will last until 1995. Financed by three Dutch Ministries, the project aims at the mapping of the regional groundwater flow systems to support policy makers at national levels and water/nature resources management. Much emphasis is put on biotic aspects such as the relation between groundwater and patterns in vegetation. The results are used in a detailed flow system analysis of the eco-hydrological valuable drainage basin of the brooks Beerze and Reusel in the southern parts of the country. In this study vegetation patterns and hydrological situations were analyzed in present and in historical settings to unravel the changes in the last decades leading to severe deterioration of habitats and wetlands. Historical data on flora from the beginning of this century on the basis of km-grid cells show a strong relation with the historical exfiltration areas where deep alkaline groundwaters rich in calcium-carbonate emerged. Agriculture and man-made changes to the natural drainage systems have led to diminishing nature values. Combining a sound understanding of the groundwater flow systems and the changes in the last decades produced a number of practical and viable measures to restore historical wetland settings and to preserve existing ones.

Research on Fire Engine Layout Design Based on System Analysis and Equipment Correlation

2012 ◽  
Vol 271-272 ◽  
pp. 1100-1104
Author(s):  
Lan Yao ◽  
Sui Huai Yu ◽  
Chao Jiang
Keyword(s):  
Systems Analysis ◽  
System Analysis ◽  
Feasible Solution ◽  
Layout Design ◽  
Analysis Method ◽  
Interior Space ◽  
Scientific Equipment ◽  
Practical Operation ◽  
Fire Engine ◽  
Design Options

Reasonable and scientific equipment layout design can adequately use the interior space to arrange and divide vehicle equipments, and the practical operation can be convenient, quick and safe. Take the anti-chemical fire engine as an example, the systems analysis method of vehicle equipment layout design especially for fire engine was proposed, and the correlation matrix and net were established according to the correlation table method in order to make sure the importance degree of equipments. Finally, three design options are evaluated, and the result proves that this method is a feasible solution.

An automated in-chip-catalytic–spectrophotometric method for determination of copper(ii) using a multisyringe flow injection analysis-multipumping flow system

2014 ◽  
Vol 6 (21) ◽  
pp. 8494-8504 ◽  
Author(s):  
Piyawan Phansi ◽  
Camelia Henríquez ◽  
Edwin Palacio ◽  
Duangjai Nacapricha ◽  
Víctor Cerdà
Keyword(s):  
Flow Injection ◽  
Flow Injection Analysis ◽  
Spectrophotometric Method ◽  
Flow System ◽  
Multisyringe Flow Injection Analysis ◽  
System P ◽  
Determination Of Copper

An automated in-chip-catalytic–spectrophotometric method for determination of copper(ii) using a multisyringe flow injection analysis-multipumping flow system (Chip–MSFIA–MPFS).

Determination of Trace Chromium (VI) in Tanning Wastewater by Flow Injection Spectrophotometry

2010 ◽  
Vol 113-116 ◽  
pp. 1732-1734
Author(s):  
Xin Zhao ◽  
Zhi Hui Sui ◽  
Jing Bin Zhang
Keyword(s):  
Standard Deviation ◽  
Relative Standard Deviation ◽  
Flow Injection ◽  
Spectrophotometric Method ◽  
H2so4 Solution ◽  
Optimum Conditions ◽  
Chromium Vi ◽  
Relative Standard ◽  
Simple Flow

In 1.0 mol/L H2SO4 solution, a rapid and simple flow—injection spectrophotometric method has been developed for Cr(Ⅵ) determination, based on the violet—red Cr(Ⅵ)—diphenylcarbazide chelates formed by reactions. The results show, under optimum conditions, the maximum absorption of the complex is at 540 nm and the detection limits of the method is 0.0136mg/L for Cr(Ⅵ) and Beer’s law is obeyed for Cr(Ⅵ) in the range of 0.03—1.60mg/L. The determination frequency is l00 times/h. The relative standard deviation of eleven replicates is less than 4.0%. The method has been applied to the determination of trace Cr(Ⅵ) in tanning wastewater with satisfactory results.

Simultaneous determination of vanadium and lead in unsegmented flow systems of variable flow rate

1992 ◽  
Vol 342 (1-2) ◽  
pp. 76-79 ◽  
Author(s):  
Juliana Marcos ◽  
Gloria del Campo ◽  
Angel Ríos ◽  
Miguel Valcárcel
Keyword(s):  
Simultaneous Determination ◽  
Flow Rate ◽  
Variable Flow ◽  
Flow Systems

scholarly journals Design of Multi Syringe Pump for Flow System Analysis

2013 ◽  
Vol 14 (1) ◽  
pp. 17
Author(s):  
Tri Mulyono ◽  
Asnawati Asnawati ◽  
Umarul Faruq
Keyword(s):  
Research Design ◽  
Flow Rate ◽  
Time Variation ◽  
System Analysis ◽  
Flow System ◽  
Syringe Pump ◽  
Pump Speed ◽  
Labview Software

The aims of this work were to research: design of the multi syringe pumps, volume consistency of ISAB and the correlation of the PWM to the flow rate of carrier. Pump speed was set by PWM. Controlling the pump speed and time were performed with a computer using Labview software. It was found that based on the time variation of time then the volume of ISAB has a consistency of the injected volume with Kv 0.25% to 2.53% and the rate of carrier based on multi syringe velocity have a good correlation with the regression value of 0.998 and the value of Kv 0.27% to 1.2%. Keywords : Multi syringe pump, MSFIA methods, PWM

Simple flow system with in-line gas-diffusion unit for determination of ethanol employing hypsochromic shift of visible absorbance band of methyl orange

Talanta ◽  
2020 ◽  
Vol 206 ◽  
pp. 120234
Author(s):  
Nuanlaor Ratanawimarnwong ◽  
Montatip Sinpun ◽  
Panuwat Chankaw ◽  
Nathawut Choengchan ◽  
Duangjai Nacapricha
Keyword(s):  
Methyl Orange ◽  
Flow System ◽  
Gas Diffusion ◽  
Hypsochromic Shift ◽  
Simple Flow ◽  
Absorbance Band

scholarly journals Utilização dos métodos automáticos em fluxos com detecção espectrofotométrica na determinação de diclofenaco de sódio em formulações farmacêuticas e fluidos corporais

2019 ◽  
Vol 48 (1) ◽  
pp. 29-43
Author(s):  
Paulo Roberto Barrros Gomes ◽  
Victor Elias Mouchrek Filho ◽  
Rayone Wesly Santos de Oliveira ◽  
Adriana Pereira Everton ◽  
Jonas Batista Reis ◽  
...  
Keyword(s):  
Spectrophotometric Determination ◽  
Spectrophotometric Method ◽  
Flow System ◽  
Diclofenac Sodium ◽  
Pharmaceutical Preparations ◽  
Pharmaceutical Formulations ◽  
Sequential Injection Analysis ◽  
Sequential Injection ◽  
Para Determinar

Este trabalho descreveu e comparou quatro estudos entre si que utilizaram métodos automáticos em fluxo com detecção espectrofotométrica e a reação de oxidação do diclofenaco para determinar diclofenaco em formulações farmacêuticas e fluidos corporais. Para isso, utilizamos os seguintes artigos: Versatility of a multicommuted flow system in the spectrometric determination of three analytes, Sequential injection spectrophotometric method for the assay of anti-inflammatory diclofenac sodium in pharmaceutical preparations, Screening of conditions controlling spectrophotometric sequential injection analysis e Sequential injection spectrophotometric determination of diclofenac in urine and pharmaceutical formulations e detalhamos as metodologias empregadas, os resultados, conclusões obtidas e comparamos entre eles os limites de detecção, desvio padrão relativo e a frequência analítica. Os resultados mostraram diferenças significativas entre métodos empregados e a utilização do Sistema automático do tipo Análise por Injeção Sequencial, apesar deste possuir menor frequência analítica.

scholarly journals A Rapid and Direct Sensitive Spectrophotometric Method for the Determination of Molybdenum(VI) using Gallacetophenone Phenylhydrazone with Application to Alloy Steel Samples

2011 ◽  
Vol 8 (3) ◽  
pp. 1362-1370 ◽  
Author(s):  
D. Venkataramana Reddy ◽  
P. V. Chalapathi ◽  
A. Varada Reddy
Keyword(s):  
Alloy Steel ◽  
Spectrophotometric Method ◽  
Room Temperature ◽  
Molar Absorptivity ◽  
Analysis Method ◽  
Slope Analysis ◽  
Relative Standard ◽  
Analytical Reagent ◽  
Ph Range

A rapid, sensitive and fairly selective spectrophotometric method has been developed for the determination of molybdenum(VI) using gallacetophenone phenylhydrazone (GPPH) as an analytical reagent. The GPPH forms an orange red species of molybdenum(VI) at a pH range of 3.0-4.0 and the complex is soluble in 20% ethanol. The Mo(VI)-GPPH complex shows maximum absorbance at 375 nm with molar absorptivity and Sandellʼs sensitivity being 1.539x104L/mol cm and 1.5x10-3μg cm-2respectively. The system obeys Beerʼs law in the range of 1.0-6.0 μg/mL. The repeatability of the method was checked by finding the relative standard deviation. The composition of the Mo(VI)-GPPH complex is established as 1:2 by slope analysis method. The instability constant of the complex calculated from Edmond and Birnbaumʼs method is 6.785x10-8at room temperature. The interfering effect of various cations and anions has also been studied. The method has been applied for the determination of Mo(VI) in alloy steel samples.

Simple flow system for the rapid pre-concentration and potentiometric determination of fluoride using a micro-column and a wall-jet electrode

The Analyst ◽  
1989 ◽  
Vol 114 (10) ◽  
pp. 1267 ◽  
Author(s):  
Yoshito Okabayashi ◽  
Michiyo Hikawa ◽  
Terumichi Nakagawa ◽  
Hisashi Tanaka ◽  
Masahiko Chikuma
Keyword(s):  
Flow System ◽  
Potentiometric Determination ◽  
Wall Jet ◽  
Simple Flow
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