<abstract xmlns="http://www.w3.org/1999/xhtml">A new and simple micelles-rich restricted access supramolecular solvent-based liquid phase microextraction method (RASUPRASs-LPME) based on the ion-pair complex formation of phosphate (PO43-) ions with ammonium heptamolybdate and malachite green in acidic medium was developed. The phosphate ion concentration after microextraction of the ion-pair complex to the hexagonal aggregates of decanoic acid (DA) was measured with micro-volume UV-Vis spectrophotometer at 625 nm. All analytical parameters which are effective on the method such as acid type and concentration, supramolecular solvent volume, amount of the components forming the complex, sample volume, were optimized. The preconcentration factor (PF), limit of detection (LOD) and limit of quantification (LOQ) for the developed method was found to be 15, 9.6 and 32.1, respectively. The RA-SUPRAs-LPME method was finally applied for the analysis of the phosphate content of different types of water samples.</abstract>

A new and simple micelles-rich restricted access supramolecular solvent-based liquid phase microextraction method (RASUPRASs-LPME) based on the ion-pair complex formation of phosphate (PO43-) ions with ammonium heptamolybdate and malachite green in acidic medium was developed. The phosphate ion concentration after microextraction of the ion-pair complex to the hexagonal aggregates of decanoic acid (DA) was measured with micro-volume UV-Vis spectrophotometer at 625 nm. All analytical parameters which are effective on the method such as acid type and concentration, supramolecular solvent volume, amount of the components forming the complex, sample volume, were optimized. The preconcentration factor (PF), limit of detection (LOD) and limit of quantification (LOQ) for the developed method was found to be 15, 9.6 and 32.1, respectively. The RA-SUPRAs-LPME method was finally applied for the analysis of the phosphate content of different types of water samples.

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

The EuroBiotech Journal

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

A new and simple micelles-rich restricted access supramolecular solvent-based liquid phase microextraction method (RASUPRASs-LPME) based on the ion-pair...

Extractionmethod	Analysisinstrument	Samples	LOD, μg L⁻¹	RSD, %	PF or EF	Extractiontime, min	Ref
DSDME	UV-Visspectrophotometer	Mineralwaters	0.19	2.7	325	7.5	3
-	Online UV-Visspectrophotometer	Naturalwaters	1.3	0.8-5.6	-	-	5
DLLME-SFO	UV-Visspectrophotometer	Tap and riverwaters	0.7	1.23-6.15	50	10	6
SPE	UV-Visspectrophotometer	Fruit leavesand naturalwaters	2.23	2	-	30	8
CPE	UV-Visspectrophotometer	Tap, welland mineralwaters	0.5	1.4	20	20	31
SPE	UV-Visspectrophotometer	-	0.04	0.38	147.9	60	35
On-line SPE	flow-injectionamperometry	Fresh andMarinewaters	0.18	5.2-5.9	18	-	36
RA-SUPRAs-LPME	UV-Visspectrophotometer	Lake andspringwater	9.62	0.44-3.5	15	10	Thisstudy

Ion	Added Salt	Studied concentration, mg·L^-1	Recovery, %
Na⁺	NaNO₃	2500	102±0
K⁺	KCl	1000	97±1
Mg²⁺	Mg(NO₃)₂.6H₂O	250	98±3
Ca²⁺	Ca(NO₃)₂.4H₂O	500	100±2
Cl^-	KCl	1000	97±1
SO₄^2-	Na₂SO₄	1000	102±0

Sample	Added, μg·L^-1	Found, μg·L^-1	Recovery, %
Lake water-I	0	264±2 : mean ±SD.	-
	66	334±8	101
	132	402±14	102
Spring water	0	260±4	-
	100	358±2	99
	200	450±2	98
Lake water-II	0	276±4	-
	66	326±2	95
	132	432±2	94

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

Article Category: Research Article

Online veröffentlicht: 30. Apr. 2020

Seitenbereich: 89 - 96

DOI: https://doi.org/10.2478/ebtj-2020-0010

Schlüsselwörter
Microextraction, restricted access supramolecular solvent, UV-Vis spectrophotometer, phosphate, ammonium heptamolybdate, malachite green

© 2020 Mustafa Soylak, Haldun Hilmi Gorucu and Erkan Yilmaz, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Figure 1

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Figure 6

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

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

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

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

Article Category: Research Article

Online veröffentlicht: 30. Apr. 2020

Seitenbereich: 89 - 96

DOI: https://doi.org/10.2478/ebtj-2020-0010

SchlüsselwörterMicroextraction, restricted access supramolecular solvent, UV-Vis spectrophotometer, phosphate, ammonium heptamolybdate, malachite green

© 2020 Mustafa Soylak, Haldun Hilmi Gorucu and Erkan Yilmaz, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

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

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

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

Schlüsselwörter
Microextraction, restricted access supramolecular solvent, UV-Vis spectrophotometer, phosphate, ammonium heptamolybdate, malachite green