Determination of cadmium, copper, lead and zinc in water samples by flame atomic absorption spectrometry after cloud point extraction

Chen, Jianrong; Teo, Khay Chuan

doi:10.1016/s0003-2670(01)01367-8

Cited by 335 publications

(145 citation statements)

References 42 publications

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“…Therefore, the credible detection of environmental copper ion is very necessary. To date, inductively coupled plasma-mass spectrometry (ICP-MS) and atomic absorption spectrometry (AAS) are the most widely used methods for copper ion determination [6,7]. In spite of the advantage of high-efficiency, these methods possess some inevitable shortcomings, such as long determination time and requirement of expensive and sophisticated equipment.…”

Section: Introductionmentioning

confidence: 99%

A sensitive fluorescent biosensor for the detection of copper ion inspired by biological recognition element pyoverdine

Yin

Wang

et al. 2016

Sensors and Actuators B: Chemical

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a b s t r a c tThe environmental copper pollution seriously threatens the health of organisms and the safety of ecosystem. Therefore, the development of a simple and sensitive method to detect copper ion is very important. In this study, we have developed a fluorescent biosensor based on biological recognition element pyoverdine to selectively detect copper ion. The fluorescence of pyoverdine is quenched obviously after binding with copper ion. A good linearity within the range of 0.2-10 M (R = 0.997) is attained and the detection limit is 50 nM. The biosensor has been successfully utilized for the detection of copper ion in drinking water, seawater and bio-samples and the results agree well with those obtained by the inductively coupled plasma mass spectrometry. Therefore, the established biosensor is a creditable method to detect copper ion with high sensitivity and selectivity, which can be utilized as a powerful tool to monitor copper pollution in the environment.

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Section: Introductionmentioning

confidence: 99%

A sensitive fluorescent biosensor for the detection of copper ion inspired by biological recognition element pyoverdine

Yin

Wang

et al. 2016

Sensors and Actuators B: Chemical

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“…A comparison of the present method with the other reported preconcentration methods [28][29][30][31][32][33] for the cadmium and zinc extraction from water samples was given in Table 4. The obtained detection limits by the proposed procedure is less than some the other methods.…”

Section: Discussionmentioning

confidence: 99%

“…28,30,31,33 Finally, the necessary sample volume is lower than the other methods. [28][29][30][31][32][33] …”

Section: Discussionmentioning

confidence: 99%

Dispersive liquid-liquid microextraction for the simultaneous separation of trace amounts of zinc and cadmium ions in water samples prior to flame atomic absorption spectrometry determination

et al. 2012

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Recebido em 9/2/11; aceito em 11/6/11; publicado na web em 8/8/11In the proposed method, carbon tetrachloride and ethanol were used as extraction and dispersive solvents. Several factors that may be affected on the extraction process, such as extraction solvent, disperser solvent, the volume of extraction and disperser solvent, pH of the aqueous solution and extraction time were optimized. Under the optimal conditions, linearity was maintained between 1.0 ng mL -1 to 1.5 mg mL -1 for zinc and 1.0 ng mL -1 to 0.4 mg mL -1 for cadmium. The proposed method has been applied for determination of trace amount of zinc and cadmium in standard and water samples with satisfactory results

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“…Compared with the recent developments in preconcentration and determination of Cu, the proposed method is simple and sensitive. 17,18 The phase separation phenomenon has also been used for the extraction and preconcentration of metal ions after the formation of sparingly water-soluble complexes. 19,20 CPE as a preconcentration step in conjunction with spectrophotometry, FIA-spectrofluorimetry, FAAS, ETAAS, ICP-AES, and HPLC for the determination of various metal ions have been widely studied.…”

Section: Introductionmentioning

confidence: 99%

“…19,20 CPE as a preconcentration step in conjunction with spectrophotometry, FIA-spectrofluorimetry, FAAS, ETAAS, ICP-AES, and HPLC for the determination of various metal ions have been widely studied. [21][22][23][24][25][26][27][28] CPE combination with FAAS for determination of manganese and iron has also been reported. [29][30][31][32][33][34] In the present work we report the results obtained from studying the CPE to determine the Cu content of sea and river waters by using Cupron as a complexing agent and Triton X-114 as a surfactant.…”

Section: Introductionmentioning

confidence: 99%

Determination of trace amounts of copper in river and sea water samples by flame atomic absorption spectrometry (FAAS) after cloud-point preconcentration

Goudarzi

2007

J. Braz. Chem. Soc.

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Este trabalho propõe um novo método de pré-concentração baseado em ponto nuvem para a determinação de cobre. O reagente 1,5-difenil-benzoína (Cupron) foi usado como complexante e Triton X-114 foi adicionado como surfactante. Após a separação das fases e diluição da fase rica em surfactante com metanol em meio acidificado foi feita a determinação do cobre por espectrometria de absorção atômica com chama (FAAS). O fator de enriquecimento do cobre, após a otimização das condições de complexação e otimização, foi igual a 88. O procedimento proposto possibilitou a determinação de cobre com limite de detecção igual a 0,04 μg L -1 . O procedimento foi aplicado com sucesso na determinação de cobre em amostras de água de rio e de mar. O desvio padrão relativo foi de 1,9 % para o Cu. Também foram investigados efeitos de interferência de alguns ânions e cátions.A new preconcentration method was proposed using the cloud point approach for copper determination. The reagent 1,5-diphenyl-benzoin (Cupron) was used as a complexing agent and Triton X-114 was added as a surfactant. After phase separation, dilution of the surfactantrich phase was carried out using acidified methanol and the copper content was subsequently measured by flame atomic absorption spectrometry. After optimization of the complexation and extraction conditions, the enrichment factor for Cu was found to be 88. The proposed procedure allowed determination of the copper content with the detection limit of 0.04 μg L -1 . The method was successfully applied to copper determination in river and sea water samples. The relative standard deviation for the method was found to be 1.9 % for Cu. The interference effects of some anions and cations were also investigated.

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Determination of cadmium, copper, lead and zinc in water samples by flame atomic absorption spectrometry after cloud point extraction

Cited by 335 publications

References 42 publications

A sensitive fluorescent biosensor for the detection of copper ion inspired by biological recognition element pyoverdine

A sensitive fluorescent biosensor for the detection of copper ion inspired by biological recognition element pyoverdine

Dispersive liquid-liquid microextraction for the simultaneous separation of trace amounts of zinc and cadmium ions in water samples prior to flame atomic absorption spectrometry determination

Determination of trace amounts of copper in river and sea water samples by flame atomic absorption spectrometry (FAAS) after cloud-point preconcentration

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