A porous carbon absorbent based on high internal phase emulsion for separation and enrichment of trifluralin from soil
- PDF / 1,264,153 Bytes
- 8 Pages / 595.276 x 790.866 pts Page_size
- 86 Downloads / 155 Views
ORIGINAL PAPER
A porous carbon absorbent based on high internal phase emulsion for separation and enrichment of trifluralin from soil Huamei Yuan 1 & Guihua Ruan 1
&
Zhengyi Chen 2 & Wenjuan Zhang 1 & Xiangqiong Jiang 1 & Fuyou Du 1
Received: 5 August 2019 / Accepted: 13 December 2019 # Springer-Verlag GmbH Austria, part of Springer Nature 2020
Abstract A porous carbon absorbent was obtained by using high internal phase emulsions (HIPEs) polymerization followed by high temperature carbonization under nitrogen protection. Graphene oxide (GO) and silica nanoparticles were doped into the HIPEs to enhance the adsorption ability and reusability. Fourier infrared spectroscopy, X-ray photoelectron spectroscopy and scanning electron microscopy were used for characterization and several parameters of separation and enrichment of trifluralin. The results showed that a hyper-crosslink framework material was obtained with abundant porous (pore size of about 30 μm) and a good adsorption and separation efficiency. The adsorption rate was up to 100% and trifluralin was completely eluted from the absorbent by 2.0 mL of an acetic acid-acetonitrile mixture. Keywords Porous carbon absorbent . High internal phase emulsions . Hyper-crosslinked framework . Sample preparation
Introduction Trifluralin (2,6-dinitro-N,N-dipropyl-4-trifluoro-methylaniline), a selective dinitroaniline pre-emergence herbicide, prevents various weeds growing before sowing [1–3]. Because of its stable structure, trifluralin can remain in the soil for more than 200 days [4], which makes it enter environmental water, thereby harm the health of aquatic life especially the fishes, other organisms and even human beings [5] and cause diseases to humans, livestock and wild animals [6, 7]. Many countries have defined its safety limits. Environment Protection Agency (EPA) lists trifluralin as a possible human carcinogen and endocrine disruptor [6]. To eliminate Electronic supplementary material The online version of this article (https://doi.org/10.1007/s00604-019-4086-1) contains supplementary material, which is available to authorized users. * Guihua Ruan [email protected] * Zhengyi Chen [email protected] 1
Guangxi Colleges and Universities Key Laboratory of Food Safety and Detection, College of Chemistry and Bioengineering, Guilin University of Technology, Guangxi 541004, China
2
Pharmacy School, Guilin Medical University, Guangxi 541004, China
trifluralin from environment soil and water, physical, photodegradation [8, 9], chemical [10] and biological [11, 12] methods including activated carbon adsorption, advanced oxidation were developed on the basis of ultraviolet, ozone and biofilm process. To enrich trace trifluralin from soil and water, sample preparation is necessary but sometimes it is hard to separate trace trifluralin by conventional materials because of the strong electronegativity. Granular activated carbon was reported being used for the effective adsorption of pendimethalin, a dinitroaniline herbicide with similar structure of triflura
Data Loading...
