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Micelle-based restricted access ion-pair microextraction of phosphate at trace levels in water samples for separation, preconcentration and determination Cover

Micelle-based restricted access ion-pair microextraction of phosphate at trace levels in water samples for separation, preconcentration and determination

The EuroBiotech Journal
Volume 4 (2020): Issue 2 (April 2020)
By: ,   and    
Open Access
|Apr 2020
Figures & tables

Figures & Tables

Figure 1

Graphical presentation of the presented RA-SUPRASs-LPME method.

Figure 2

The effect of the concentration of H2SO4 on the recovery of phosphate ions in the presented study (N=3).

Figure 3

The effect of the volume of ion pair forming auxiliary solution on the recovery of phosphate ions (N=3).

Figure 4

The effect of amount of decanoic acid on the recoveries of phosphate ions in the presented microextraction study (N=3).

Figure 5

The effect of tetrahydrofuran volume on the recoveries of phosphate ions in the presented microextraction study (N=3).

Table 1

The effect of alkali, alkaline earth metals and some selected anions on the RA-SUPRASs-LPME method (N =3)

IonAdded SaltStudied concentration, mg·L-1Recovery, %
Na+NaNO32500102±0
K+KCl100097±1
Mg2+Mg(NO3)2.6H2O25098±3
Ca2+Ca(NO3)2.4H2O500100±2
Cl-KCl100097±1
SO42-Na2SO41000102±0
Figure 6

The calibration curve (A) and UV-Vis spectrum belong to increasing phosphate concentration (B).

Table 2

Application of the RA-SUPRASs-LPME method for determination of phosphate in real water samples (N=3).

SampleAdded, μg·L-1Found, μg·L-1Recovery, %
Lake water-I0264±2a-
66334±8101
132402±14102
Spring water0260±4-
100358±299
200450±298
Lake water-II0276±4-
66326±295
132432±294

a : mean ±SD.

Table 3

Comparison of the RA-SUPRAs-LPME method with other phosphate determination methods in literature studies

Extraction
method		Analysis
instrument 		SamplesLOD, μg L−1RSD, %PF or EFExtraction
time, min		Ref
DSDME UV-Vis
spectrophotometer		Mineral
waters		0.192.73257.53
- Online UV-Vis
spectrophotometer		Natural
waters		1.30.8-5.6--5
DLLME-SFO UV-Vis
spectrophotometer		Tap and river
waters		0.71.23-6.1550106
SPEUV-Vis
spectrophotometer		Fruit leaves
and natural
waters		2.232-308
CPEUV-Vis
spectrophotometer		 Tap, well
and mineral
waters		0.51.4202031
SPE UV-Vis
spectrophotometer		-0.040.38147.96035
On-line SPEflow-injection
amperometry		Fresh and
Marine
waters 		0.185.2-5.918-36
RA-SUPRAs-
LPME		UV-Vis
spectrophotometer		Lake and
spring
water		9.620.44-3.51510This
study

[i] DSDME: Directly suspended droplet microextraction, DLLME-SFO: Dispersive liquid–liquid microextraction based on solidification of a floating organic drop, SPE: Solid phase extraction, CPE: Cloud point extraction.

DOI: https://doi.org/10.2478/ebtj-2020-0010 | Journal eISSN: 2564-615X
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Language: English
Page range: 89 - 96
Published on: Apr 30, 2020
Published by: European Biotechnology Thematic Network Association
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year
Keywords:
Microextraction,
restricted access supramolecular solvent,
UV-Vis spectrophotometer,
phosphate,
ammonium heptamolybdate,
malachite green
Related subjects:
Life sciences,
Genetics,
Biotechnology,
Bioinformatics,
Life sciences, other

© 2020 Mustafa Soylak, Haldun Hilmi Gorucu, Erkan Yilmaz, published by European Biotechnology Thematic Network Association
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Volume 4 (2020): Issue 2 (April 2020)
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