Determination of a trace amount of beryllium in water samples by graphite furnace atomic absorption spectrometry after preconcentration and separation as a beryllium-acetylacetonate complex on activated carbon

Okutani, Takashi; Tsuruta, Yasuhiro.; Sakuragawa, Akio

doi:10.1021/ac00057a026

Cited by 68 publications

(36 citation statements)

References 7 publications

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“…The dissolved Be(II) in the sample was reacted with acetylacetone (acac) [12][13][14][15][16] in the presence of ammonium acetate buffer (pH = 6.0) to form the chelate of beryllium acetylacetonate [Be(acac)2]. 17 The chelate was preconcentrated on a home-made C18 cartridge, and then eluted with methanol (0.50 ml).…”

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confidence: 99%

Application of Acetylacetone Chelation Solid-Phase Extraction to GFAAS Measurements of Trace Amounts of Beryllium in Marine Organisms

et al. 2004

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Application of Acetylacetone Chelation Solid-Phase Extraction to GFAAS Measurements of Trace Amounts of Beryllium in Marine Organisms

et al. 2004

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“…Among several complexing agents, acetylacetone has been commonly used in the preconcentration procedure because the overall formation constant of Be acetylacetonate, Be(acac)2, is sufficiently high (about 2 × 10 22 ). [14][15][16] On the other hand, chromazurol B (CAB) and chromazurol S (CAS), 17,18 eriochrome cyanine R (ECR), 19 arsenazo I 20 and morin 8 were also used for the determination of Be by spectrophotometry or fluorescence methods. In our laboratory, FAAS has been used succesfully for the determination of very low levels of various metals in different matrices after enrichment methods.…”

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Determination of Beryllium in Solid Samples by Flame Atomic Absorption Spectrometry after Preconcentration on Activated Carbon

Yaman

Avci

2006

ANAL. SCI.

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It is generally supposed that the preconcentration procedure is used for the determination of metal concentrations under the sensitivity of the measurement method. This study showed that preconcentration is also need for the beryllium (Be) concentration over the sensitivity of atomic absorption spectrometry. For this purpose, a simple and selective method for the determination of Be in solid samples is modified. The method is based on the preconcentration of the complexes of beryllium-acetylacetone plus morin, oxine, PAN and PAR on activated carbon at different pH values. The adsorbed beryllium was eluted with aqua regia and measured by flame atomic absorption spectrometry (FAAS). Recoveries of up to 85% were achieved. For removing chemical interferences and applying the method to Be determination in solid samples, the masking studies and reproducibility were examined. The detection limit was found to be 0.12 ng mL -1 . The relative sandard deviations (RSD) were found to be 8% for 60 mL of 10.0 ng mL -1 using 10 replicate enrichment procedures. Beryllium concentrations in the studied solid samples were found in the range of 0.28 -3.95 mg kg -1 .

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“…1,2 Beryllium is one of the most toxic non-radioactive elements to be found at ultra-trace levels (ng L -1 -sub ng L -1 ) in natural water sources. [3][4][5] However, some acidic river water or hotspring water samples have a high beryllium concentration at trace levels (μg L -1 -sub μg L -1 ). 4,6 Beryllium is an insidious poison with a latent toxicity and prolonged excretion in urine for 10 years of exposure.…”

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Cloud-Point Formation Based on Mixed Micelles for the Extraction, Preconcentration and Spectrophotometric Determination of Trace Amounts of Beryllium in Water Samples

Beiraghi¹,

Zarei

Babaee³

2007

ANAL. SCI.

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The use of beryllium metal, alloys and its compounds in metallurgy, aerospace, and nuclear installations as well as their emission during the combustion of coal and oil, and the toxicity makes this element a serious environmental hazard. 1,2 Beryllium is one of the most toxic non-radioactive elements to be found at ultra-trace levels (ng L -1 -sub ng L -1 ) in natural water sources. [3][4][5] However, some acidic river water or hotspring water samples have a high beryllium concentration at trace levels (μg L -1 -sub μg L -1 ). 4,6 Beryllium is an insidious poison with a latent toxicity and prolonged excretion in urine for 10 years of exposure. 7 Although acute and chronic beryllium disease (CBD) occurs mainly by the inhalation of industrial gases and dust, the determination of trace amounts of beryllium in natural water samples is of interest, because it can indicate environmental pollution, and could provide information about the metal uptake through these sources. EPA drinkingwater regulations require that the beryllium levels be maintained below 4 μg L -1 . 8 Chronic beryllium diseases produce scarring of lung tissue. The lung condition may take years (average 10 -15 years) to develop symptoms. 9,10 Because of the seriousness of CBD, the United State Department of Energy (DOE) promulgated in 1999 the CBD preventation program, 10CFR part 850, to protect DOE workers. It requires frequent monitoring of air and possible contaminated surfaces to identify potential health risk;11 there is an increased need for beryllium analysis in DOE facilities.Therefore, highly sensitive analytical methods are necessary for the preconcentration and determination of beryllium.Several instrumental methods for the determination of beryllium by spectrophotometry, 12-15 spectrofluorometry, 16-18 atomic absorption spectrometry (AAS), 19 graphite furnace atomic absorption spectrometry (GFAAS), 20 and inductively coupled plasma atomic emission spectrometry (ICP-AES) 21 have been reported. In contrast to the majority of these expensive and sophisticated analysis systems, absorption spectrophotometric methods offer many appealing characteristics, including simple instrumentation, rapid response times and easy operation. These properties are highly desirable to the future design and development of portable analytical devices capable of quickly responding to trace levels of hazardous beryllium content in the field.Recently, cloud-point extraction (CPE) based on the clouding phenomenon of surfactants over a certain temperature, has become increasingly attractive. As a new separation technique, CPE offers many advantages over traditional liquid-liquid extraction. 22,23 In addition, CPE can lead to a higher recovery efficiency and a large preconcentration factor because the presence of a surfactant can minimize the losses of analytes due to their adsorption onto the container. The small volume of the surfactant-rich phase obtained with this methodology permits the design of extraction schemes that are simple and cheap, and have lower toxicity...

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Determination of a trace amount of beryllium in water samples by graphite furnace atomic absorption spectrometry after preconcentration and separation as a beryllium-acetylacetonate complex on activated carbon

Cited by 68 publications

References 7 publications

Application of Acetylacetone Chelation Solid-Phase Extraction to GFAAS Measurements of Trace Amounts of Beryllium in Marine Organisms

Application of Acetylacetone Chelation Solid-Phase Extraction to GFAAS Measurements of Trace Amounts of Beryllium in Marine Organisms

Determination of Beryllium in Solid Samples by Flame Atomic Absorption Spectrometry after Preconcentration on Activated Carbon

Cloud-Point Formation Based on Mixed Micelles for the Extraction, Preconcentration and Spectrophotometric Determination of Trace Amounts of Beryllium in Water Samples

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