A Genuine Combination of Solvent‐free Sample Preparation Technique and Molecularly Imprinted Nanomaterials

Patra, Santanu; Roy, Ekta; Madhuri, Rashmi; Sharma, Prashant K.

doi:10.1002/9781119336181.ch2

Cited by 2 publications

(1 citation statement)

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“…Nowadays, microsolid phase extraction (μ-SPE) and solid phase microextraction (SPME) techniques have become very popular in the field of separation science, due to their low analysis time, low required volume of organic solvents for the analytical protocol, easy setup and easy automation, i.e., able to connect any analytical instruments in a simple but effective way. 17 These techniques have integrated two different processes in one, i.e., sampling and sample pretreatment. In addition, it is easy to operate and show high enrichment factors.…”

Section: ■ Introductionmentioning

confidence: 99%

Removal and Recycling of Precious Rare Earth Element from Wastewater Samples Using Imprinted Magnetic Ordered Mesoporous Carbon

Patra

Roy

Madhuri

et al. 2017

ACS Sustainable Chem. Eng.

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The present work is devoted toward the development of a highly efficient, low cost, selective and sensitive technique for the detection, removal and recovery of a popular rare earth element, i.e., gadolinium [Gd]. Herein, the magnetic ordered mesoporous carbon (OMMC) is prepared by a green synthesis approach and used as a core for the preparation of imprinted-OMMC using Gd(III) as a template. The prepared material has been used as a coating sorbent for solid phase microextraction (SPME) fiber as well as filled in a small sized micropipette tip to perform the microsolid phase extraction (μ-SPE) based study. The techniques have been explored for different purposes, i.e., preconcentration and trace level detection of Gd(III) has been done by SPME; however, μ-SPE is used for removal as well as recycling of Gd(III) from wastewater samples. The SPME fiber shows a higher preconcentration factor 1400 for Gd(III) with a limit of detection = 2.34 ng L–1, whereas the μ-SPE cartridge shows a higher adsorption capacity (30.2 μg g–1) and removal efficiency (90%) toward Gd(III). Both the techniques have been successfully applied to the preconcentration, detection and removal of Gd(III) from pathological laboratory wastewater, drinking water, sewage sludge, tap water, pond water, river water, human sera, fruits and vegetables and soil and water samples collected from the local coal mines. In addition, the μ-SPE cartridge was successfully applied for recycling of Gd(III) (in solid form) from both pathological laboratory wastewater and coal soil samples.

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Section: ■ Introductionmentioning

confidence: 99%