Determination of iron(III) and aluminum in solution with a piezoelectric quartz crystal coated with silicone oil

Nomura, Toshiaki; Ando, Mark A.

doi:10.1016/s0003-2670(00)82629-x

Cited by 10 publications

(6 citation statements)

References 5 publications

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“…After an allowance was made for solvent density effects, it was estimated that less than 0.005% of the available solute was absorbed by the coatings. Nomura et al (15)(16)(17) used coated quartz crystals for the selective sorption of ionic species from solution. In particular, copper oleate coating was used for the determination of 3-40 µ solutions of lead (15), poly(vinylpyridine) coating was used for the measurement of µ solutions of copper(II) (16), and silicone oil was used for the determination of 5-100 µ solutions of iron (III) (17).…”

Section: Introductionmentioning

confidence: 99%

Determination of organic acids in dilute hydrocarbon solution using poly(ethylenimine)-coated piezoelectric crystals

Charlesworth¹

1990

Anal. Chem.

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Some of the factors that Influence the resonant frequency of oscillating 10-MHz AT-cut quartz crystals In liquids are Investigated. The relationship between the measured frequency shifts and the physical properties of the liquids are examined, and reasons for departure from Ideal behavior are discussed. The sorption characteristics of crystals coated with a polymer film (poly(ethylenlmlne)) containing basic functional groups are reported. These coated crystals are shown to behave as selective detectors for a range of organic acids in dilute hydrocarbon solution. The lower limit for reliable measurement using a crystal coated with a 40-kHz load of poly(ethylen-Imlne) Is estimated to be approximately 25 ppm of phenol In n -heptane. Pick's law appears to govern the rate of uptake of mass by the polymer fKm; however some strong adds show Irreversible sorption. The crystals function reliably under solvent flow conditions, where the response time Is determined by the thickness of the coating and the flow cell volume. Sensors of this type may find application In areas such as high-performance liquid chromatography detection, Industrial process stream analysis, and fuel-quality monitoring.

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Section: Introductionmentioning

confidence: 99%

Determination of organic acids in dilute hydrocarbon solution using poly(ethylenimine)-coated piezoelectric crystals

Charlesworth¹

1990

Anal. Chem.

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“…Nomura et al. − has also demonstrated the utility of coated crystals for the selective sorption of ionic species from solution. In particular, copper oleate coating was used for the determination of 3−40 μM lead, poly(vinylpyridine) coating was used for the measurement of 5−35 μM copper (II), and silicone oil was used for the determination of 5−100 μM iron(III) …”

Section: Introductionmentioning

confidence: 99%

“… − has also demonstrated the utility of coated crystals for the selective sorption of ionic species from solution. In particular, copper oleate coating was used for the determination of 3−40 μM lead, poly(vinylpyridine) coating was used for the measurement of 5−35 μM copper (II), and silicone oil was used for the determination of 5−100 μM iron(III) was shown to exhibit increased specificity toward Cu 2+ and Ni 2+ ions over other first-row transition metal ions, and concentrations at 0.1 ppm were readily detectable.…”

Section: Introductionmentioning

confidence: 99%

“…Liquid phase measurements involving the use of a piezoelectric crystal coated with a reactive or absorbent layer were first reported by Konash and Bastiaans 4 as part of their attempts to develop a mass detector for liquid chromatography. Nomura et al [5][6][7] has also demonstrated the utility of coated crystals for the selective sorption of ionic species from solution. In particular, copper oleate coating was used for the determination of 3-40 µM lead, 5 poly(vinylpyridine) coating was used for the measurement of 5-35 µM copper (II), 6 and silicone oil was used for the determination of 5-100 µM iron(III).…”

Section: Introductionmentioning

confidence: 99%

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Quartz Crystal Microbalance Sensor Deposited with Langmuir−Blodgett Films of Functionalized Polythiophenes and Application to Heavy Metal Ions Analysis

Zhou

Chen

et al. 1998

Langmuir

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Two novel functionalized polythiophenes, poly[3-(6-hydroxyhexyl)thiophene] and poly(3-octanethio-2,2‘-bithiophene), were used as selective coating materials for quartz crystal microbalance (QCM) sensors. These conductive polymers on admixture with stearyl alcohol were deposited on QCM devices by the Langmuir−Blodgett (LB) technique. These LB films exhibited a selective adsorption for the first-row transitions ions in the Irving-Williams order due to the complexation of metal ions with sulfur atoms in the polymers. These LB film coated QCM sensors were found applicable in detecting heavy metal ions in aqueous solution, which are major pollutants in wastewater. The coated QCM sensors can selectively adsorb heavy metal ions (Hg2+) from solution over a wide range from 0.1 to 100 ppm concentration by complexation with sulfur atoms in the polymers. The bound mercury could be removed by ethylenediaminetetraacetic acid (EDTA) solution. The presence of ferrous, lead, cobalt, and chromium cations in the solution did not interfere with the detection of mercury ions.

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“…Nomura et al applied a functional film to the surface of the quartz crystal for a selective concentration and determination of the metal ion simultaneously. Silicon oil was coated onto a quartz crystal for iron(III) and aluminum(III), 16 and poly(vinylpyridine) for copper(II). 17 Chitosan has been widely used for the concentration and separation of metal ions as an absorption reagent, [19][20][21] and a quantitative analysis of metal ions has been developed by coating chitosan onto a quartz crystal as a functional film.…”

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confidence: 99%

Silver-selective Sensor Using an Electrode-separated Piezoelectric Quartz Crystal Modified with a Chitosan Derivative

Bao

Nomura

2002

ANAL. SCI.

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The determinations of metal ions in solutions using a piezoelectric quartz crystal (PQC) were performed with electrodeposition 1 until 1980. In this method, after the analyte in a solution was electrodeposited onto the electrode of the quartz crystal for several minutes, the different frequencies of the quartz crystal before and after the deposition were measured under a dried condition. It was an inevitable fact that the precision of the analysis was poor because of the complicated operations, such as the reproducibility of setting the crystal to the oscillator and depositing the metal ions on the electrode. After the quartz crystal immersed in a solution oscillated, 2,3 direct electrodepositing determinations of metal ions in solutions such as copper(II), 4 silver(I), 5,6 lead(II), 7 gold(III) 8 or anions such as cyanide, 2,9 iodide, 10 and bromide 11 were reported. Although the quantitative analysis of the various ions using the quartz crystal became more sensitive and simple, it was still inconvenient to use the electrode of the quartz crystal as a working electrode because of exfoliation and the short life of the electrode. Another determination method of metal ions at the µM level has been developed by a precipitation reaction, [12][13][14] or ion-pair complexation 15 to deposit directly onto the quartz crystal. These methods need a pretreatment to separate the analytes, or to choose a highly selective precipitant. Nomura et al. applied a functional film to the surface of the quartz crystal for a selective concentration and determination of the metal ion simultaneously. Silicon oil was coated onto a quartz crystal for iron(III) and aluminum(III), 16 and poly(vinylpyridine) for copper(II). 17 Chitosan has been widely used for the concentration and separation of metal ions as an absorption reagent, [19][20][21] and a quantitative analysis of metal ions has been developed by coating chitosan onto a quartz crystal as a functional film. 18 Especially, metal-complexed chitosan and a chitosan derivative are useful for a peculiar selective separation of some metal ions.The chitosan film, however, can be used only in a basic solution because of dissolution in acidic. To conquer this weak point, the chitosan was combined chemically onto a quartz crystal plate with silane and glutaraldehyde, and then the frequency behavior and the adsorption characteristics of metal ions in solution were examined for N-(2-pyridylmethyl) chitosan (PMC) 23 modified on the quartz crystal plate. The chitosan derivative (PMC) film selectively adsorbed silver(I) in an ammonium chloride buffer solution containing EDTA, and could be applied to the determination of a trace amount of silver(I). Experimental ReagentsAll of the chemicals were bought from Wako Pure Chemical Industries, Ltd. The reagents for the film, {chitosan1000, (3-aminopropyl)triethoxylsilane (APTES), glutaraldehyde, and 2-pyridinecarbaldehyde} were used without further purification. The standard storage solutions of metal ions were prepared with analytical reagent-grade ch...

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Determination of iron(III) and aluminum in solution with a piezoelectric quartz crystal coated with silicone oil

Cited by 10 publications

References 5 publications

Determination of organic acids in dilute hydrocarbon solution using poly(ethylenimine)-coated piezoelectric crystals

Determination of organic acids in dilute hydrocarbon solution using poly(ethylenimine)-coated piezoelectric crystals

Quartz Crystal Microbalance Sensor Deposited with Langmuir−Blodgett Films of Functionalized Polythiophenes and Application to Heavy Metal Ions Analysis

Silver-selective Sensor Using an Electrode-separated Piezoelectric Quartz Crystal Modified with a Chitosan Derivative

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