Magnetic solid-phase extraction combined with graphite furnace atomic absorption spectrometry for speciation of Cr(III) and Cr(VI) in environmental waters

Jiang, Hongmei; Yang, Ting; Wang, Yanhong; Lian, Hong-zhen; Hu, Xin

doi:10.1016/j.talanta.2013.05.008

Cited by 117 publications

(36 citation statements)

References 37 publications

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“…The 6 was higher, the extraction was exothermic when temperature increases, the analytes will be desorbed [23]. the highest extraction efficiency was found at 40°C.…”

Section: Extraction Temperaturementioning

confidence: 98%

“…A standard stock solution was prepared by dissolving 10.0 mg of each standard in 100 mL of ethanol and stored in dark at 4°C. N-methylimidazole (Darui Fine Chemicals, Shanghai, China), tetraethyl orthosilicate (TEOS), KPF 6 , FeCl 3 , (NH 4 ) 2 Fe (SO 4 ) 2 , ethanol, acetone, methylene chloride (Sinopharm Chemical Reagent Co., Ltd., Shanghai, China).…”

Section: Chemicals and Reagentsmentioning

confidence: 99%

“…The efficiency of extraction for ST (E safranine %) 6 showed the best efficiency of extraction, so, this compound was applied in the current work.…”

Section: Efficiency Of Extraction Of Various Mnpsmentioning

confidence: 99%

“…MSPE has been used in widely in many analysis fields such as food, environmental and biological analysis [6,7] Nowadays, scientists are focusing on the use of Fe 3 O 4 nanoparticles (NPs) as MSPE absorbent with special functional groups change to measure the amount of the target analytes. Various materials were applied in Fe 3 [9].…”

Section: Introductionmentioning

confidence: 99%

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Magnetic Solid Phase Extraction Using Ionic Liquid Coated Magnetic Core Fe3O4@SiO2 Nanoparticles Followed by UV Spectrophotometry for Separation/Analysis of Safranine T in Food

Bakheet¹

2017

AJHC

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Hydrophobic ionic liquids (IL) 1-octyl-3-methylimidazole hexafluorophosphate ([OMIM] PF 6 ) coatedFe 3 O 4 @SiO 2 nanoparticles was employed in magnetic solid phase extraction (MSPE) method coupled with ultraviolet visible spectrophotometry for the analysis of safranineT (ST). The results showed that safranineT was adsorbed fast by Fe 3 O 4 @SiO 2 @[OMIM] PF 6 and eluted by ethanol. Different parameters, such as; pH, temperature, ionic strength, eluent type, volume and temperature were studied. This method introduced wide linear range of 15-350 ng mL -1 , the correlation coefficient was 0.9991, the equations of calibration graph was A (absorbance) = 0.04+0.13c (µg mL -1 ), the detection limit was 0.37 ng mL -1 (RSD = 5.1%). The current method could be applied for the analysis of ST in food samples with satisfactory results.

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“…The 6 was higher, the extraction was exothermic when temperature increases, the analytes will be desorbed [23]. the highest extraction efficiency was found at 40°C.…”

Section: Extraction Temperaturementioning

confidence: 98%

Section: Chemicals and Reagentsmentioning

confidence: 99%

“…The efficiency of extraction for ST (E safranine %) 6 showed the best efficiency of extraction, so, this compound was applied in the current work.…”

Section: Efficiency Of Extraction Of Various Mnpsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Magnetic Solid Phase Extraction Using Ionic Liquid Coated Magnetic Core Fe3O4@SiO2 Nanoparticles Followed by UV Spectrophotometry for Separation/Analysis of Safranine T in Food

Bakheet¹

2017

AJHC

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“…The permissible limit for chromium given by WHO is 0.05 mg L -1 . 3 Several spectro-analytical methods, such as graphite furnace atomic absorption spectrometry (GFAAS), 4 flame atomic absorption spectrometry (FAAS), 5 UV-visible (UV-Vis) spectrophotometry, 6 inductively coupled plasma optical emission spectrometry (ICP-OES), 7 inductively coupled plasma mass spectrometry (ICP-MS) 8 , have been used to determine chromium species in different samples. FAAS has become one of the popular techniques because of its low cost and easy operation.…”

Section: Introductionmentioning

confidence: 99%

Online Preconcentration Procedure for Chromium Speciation and Determination in Industrial Water Samples Using Flame Atomic Absorption Spectrometry

2016

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An online preconcentration system based on solid-phase extraction was developed for speciation and determinations of Cr in industrial water samples using flame atomic absorption spectrometry. A minicolumn packed with Amberlite XAD-16 loaded with salicylic acid was used to preconcentrate chromium species. All flow and chemical parameters that influence sorption were studied. The preconcentration factor and detection limit for the preconcentration time of 120 s were 79 and 0.10 μg L -1 , respectively. The concentration of Cr(VI) species was calculated by the difference of the total Cr and Cr(III). The relative standard deviation (RSD) (five replicate of measurements) for 50 and 100 μg L -1 Cr(III) solution was 1.2 and 1.0% respectively. The accuracy of the method was verified by analyzing a standard reference material (NIST SRM 1640a, trace elements in natural water). The proposed preconcentration method was successfully applied to the determination of Cr species in industrial water samples with satisfactory results.

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Smart Materials in Speciation Analysis

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Handbook of Smart Materials in Analytical Chemistry

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Magnetic solid-phase extraction combined with graphite furnace atomic absorption spectrometry for speciation of Cr(III) and Cr(VI) in environmental waters

Cited by 117 publications

References 37 publications

Magnetic Solid Phase Extraction Using Ionic Liquid Coated Magnetic Core Fe<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub> Nanoparticles Followed by UV Spectrophotometry for Separation/Analysis of Safranine T in Food

Magnetic Solid Phase Extraction Using Ionic Liquid Coated Magnetic Core Fe<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub> Nanoparticles Followed by UV Spectrophotometry for Separation/Analysis of Safranine T in Food

Online Preconcentration Procedure for Chromium Speciation and Determination in Industrial Water Samples Using Flame Atomic Absorption Spectrometry

Smart Materials in Speciation Analysis

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Magnetic solid-phase extraction combined with graphite furnace atomic absorption spectrometry for speciation of Cr(III) and Cr(VI) in environmental waters

Cited by 117 publications

References 37 publications

Magnetic Solid Phase Extraction Using Ionic Liquid Coated Magnetic Core Fe&lt;sub&gt;3&lt;/sub&gt;O&lt;sub&gt;4&lt;/sub&gt;@SiO&lt;sub&gt;2&lt;/sub&gt; Nanoparticles Followed by UV Spectrophotometry for Separation/Analysis of Safranine T in Food

Magnetic Solid Phase Extraction Using Ionic Liquid Coated Magnetic Core Fe&lt;sub&gt;3&lt;/sub&gt;O&lt;sub&gt;4&lt;/sub&gt;@SiO&lt;sub&gt;2&lt;/sub&gt; Nanoparticles Followed by UV Spectrophotometry for Separation/Analysis of Safranine T in Food

Online Preconcentration Procedure for Chromium Speciation and Determination in Industrial Water Samples Using Flame Atomic Absorption Spectrometry

Smart Materials in Speciation Analysis

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Product

Resources

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Magnetic Solid Phase Extraction Using Ionic Liquid Coated Magnetic Core Fe<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub> Nanoparticles Followed by UV Spectrophotometry for Separation/Analysis of Safranine T in Food

Magnetic Solid Phase Extraction Using Ionic Liquid Coated Magnetic Core Fe<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub> Nanoparticles Followed by UV Spectrophotometry for Separation/Analysis of Safranine T in Food