[PDF] Top 20 Analisis y Diseño Sismico de Estructuras Especiales. Puentes
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Preconcentration and Determination of Chromium Species Using Octadecyl Silica Membrane Disks and Flame Atomic Absorption Spectrometry
... the species in which it is ...of chromium in industrial effluent, natural and drinking ...of chromium in environmental samples is of prime ...concerning chromium speciation and ... See full document
7
Assessment of the trace Levels of Lead (II) Using Solid Phase Extraction and Flame Atomic Absorption Spectrometry
... The present report is an attempt to develop a facile and quantitative method for concentrative separation and subsequent assessment of the ppb and sub-ppb levels of lead in some water samples collected in different ... See full document
60
Preconcentration and Determination of Trace Amounts of Heavy Metals in Water Samples Using Membrane Disk and Flame Atomic Absorption Spectrometry
... for preconcentration and determination of copper, zinc, cadmium, cobalt, nickel and lead in natural waters, using flame atomic absorption spectrometric detection, after chelation ... See full document
8
Solid Phase Extraction of Ultra Traces Copper (II) Using Octadecyl Silica Membrane Disks Modified by a New Schiff Base Prior to Determination by Flame Atomic Absorption
... and determination of copper ions from some water ...confirmed using addition method, which indicates the capability of the system in determination of ... See full document
15
Use of 2-hydroxy-3-methoxybenzaldehyde functionalized amberlite xad-16 for preconcentration and determination of trace metal ions by flame atomic absorption spectrometry
... high preconcentration factor and recovery, rapid phase separation, low cost, easy regeneration for multiple quantitative sorption–desorption cycles and good reproducibility in the sorption characteristics and the ... See full document
36
Linde Type a Zeolite and Type Y Faujasite as a Solid Phase for Lead, Cadmium, Nickel and Cobalt Preconcentration and Determination Using a Flow Injection System Coupled to Flame Atomic Absorption Spectrometry
... prepared using KBr pellet technique for FTIR and by the IR-ATR tech- nique; the samples were placed directly into the diamond crystal with KRS-5 (mixture of bromide and thallium iodide) at ATR ...performed ... See full document
186
On-line pre-concentration of arsenic compounds by dynamic ph junction-capillary electrophoresis
... Capillary electrophoresis (CE) is an evolution of traditional slab gel electrophoretic technique. All commercially available CE is usually equipped with UV/VIS detector due to its ease of operation. However, CE suffers ... See full document
8
The Application of Flame Atomic Absorption Spectrometry for Gold Determination in Some of Its Bearing Rocks
... Temperature has effective results on gold concentrations in sulphide minerals, where using direct leaching without a preliminary roasting resulted in low gold concentrations. Several explanations were given; first ... See full document
256
Preconcentration of ultra-traces of Cu(II) in water samples using SBA-15 sorbent modified with a thiocarbohydrazide ligand prior to determination by flame atomic absorption spectrometry
... The preconcentration (or enrichment) factor can be calculated as the ratio of the breakthrough volume and the eluent ...higher preconcentration factor (PCF) could be obtained by increasing the ratio of ... See full document
6
Mucor pusillus immobilized Amberlite XAD-4 biocomposites for preconcentration of heavy metal ions by solid-phase extraction method
... the determination of Cd, Cu, and Pb by High Resolution – Continuum Source Flame Atomic Absorption Spectrometry HR-CS FAAS using a mini-column of Mucor pusillus ...resulting ... See full document
13
Atomic absorption spectrometry and flame photometry for determination of minerals elements in fresh pomegranate fruit juice
... The composition of pomegranate Juice depends on the cultivar type, soil type, environmental conditions and bioavailability of trace elements, have been implicated in the variability of trace elements and heavy metals in ... See full document
200
Application of ultrasonic-assisted enzymatic digestion system for digestion of cockles
... This research is carried out to investigate the digestion of solid biological sample by using Ultrasonic-Assisted Enzymatic Digestion System (USAED) method. This project covered the optimization of parameters by ... See full document
61
Simultaneous determination of Zinc(II) and Cobalt(II) by First order derivative Spectrophotometry in Triton X-100 Micellar Media
... spectrophotometric determination of Zn(II) and Co(II): Derivative spectrophotometry is a useful technique because it decreases the interference ...the determination of metal ion having overlapping ...the ... See full document
12
Determination of Total Mercury in Muscle Tissues of Marine Fish Species by Ultrasonic Assisted Extraction Followed by Cold Vapor Atomic Absorption Spectrometry
... standard deviation of 10 measurements of a reagent blank and m is the slope of the calibration graph corresponding to Hg and good precision could be seen for the calibration. The calculated LOD was 0.133µg/kg and LOQ was ... See full document
28
Application of Sulfur Nanoparticles as a Solid Phase Extraction Sorbent for the Preconcentration of Lead(II) and Palladium(II) in Environmental Samples Prior to Flame Atomic Absorption Spectrometry Determination
... the determination of Pb and Pd was ...palladium preconcentration possessed several advantages such as simplicity, high preconcentration factor and low ... See full document
534
Selective Preconcentration of Ultra Trace Amounts of Cobalt and Nickel on Octadecyl Bonded Silica Membrane Disk Modified with Thioridazine?Hcl and Determination by Inductively Coupled Plasma-Optical Emission Spectrometry
... samples using C 18 -silica extraction disks modified by 2- [(isopropoxycarbothioyl) disul fanyl] ethane and its determination by inductively coupled plasma- optical emission spectro- metry ... See full document
16
Optimize Determination of Calcium Using Flame Atomic Absorption
... Ionization interferences: an appreciable fraction of alkali, alkaline earth element may be ionized in the flame. Since we are measuring the unionized atoms, either emission or absorption signals will be ... See full document
87
Preconcentration of Silver Using Solidification of Floating Organic Drop and Its Determination by Flame Atomic Absorption Spectroscopy
... In this paper, a DLLME-SFO method was described for preconcentration and determination of silver. This technique provides good precision, simplicity, ease of operation, low LOD, linearity over a wide range, ... See full document
8
ON-LINE PRECONCENTRATION AND DETERMINATION OF LEAD IN WATER BY FLOW INJECTION- FLAME ATOMIC ABSORPTION SPECTROSCOPY USING AMBERLITE XAD-16 FUNCTIONALIZED WITH XYLENOL ORANGE
... online preconcentration and determination of Pb(II) in water sample using flow injection with flame atomic absorption spectrometry (FAAS) for ...of using this resin ... See full document
16
Review of procedures involving separation and Solid Phase Extraction for the determination of cadmium using spectrometric techniques
... optical spectrometry is an appropriate analytical method that is often used to determine most heavy metals such as cadmium in different types of specimens ...Therefore, preconcentration and separation ... See full document
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