Development of an extraction procedure and analysis of electrostatically stabilized silanates from aqueous solutions Cover

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Development of an extraction procedure and analysis of electrostatically stabilized silanates from aqueous solutions

Oceanological and Hydrobiological Studies

Volume 49 (2020): Issue 3 (September 2020)

By: Joanna Jabłońska, Mariusz Kluska, Nikolai Erchak and Stanisław Popiel

Open Access

|Sep 2020

Figures & Tables

Structures of analyzed compounds: a) 1-(N-morpholiniomethyl)spirobi(1-sila-2,5-dioxacyclopentan-3-on)at (72), b) 1-(N-morpholiniomethyl)spirobi(1-sila-2,5-dioxa-4-methylcyclopentan-3-on)at (73), c) 1-(N-morpholiniomethyl) spirobi(1-sila-2,5-dioxa-4-(i-propyl)cyclopentan-3-on)at (79)

Structure of a compound used in terminating electrolyte 4,4’-bis[(1-morpholiniomethyl)spirobi(1-sila-2,5-dioxacyclopentan-3-on)at]

Chemical structures of bonded stationary phases used in the study: a) octadecyl, b) octyl, c) phenylpropyl stationary phases

Isotachophoregram of the mixture of 1-(N-morpholiniomethyl)spirobi(1-sila-2,5-dioxacyclopentan-3-on)at (72), 1-(N-morpholiniomethyl)spirobi(1-sila-2,5-dioxa-4-methylcyclopentan-3-on)at (73), 1-(N-morpholiniomethyl) spirobi(1-sila-2,5-dioxa-4-(i-propyl)cyclopentan-3-on)at (79)

Optimum conditions for isotachophoretic separation of a mixture 1-(N-morpholiniomethyl)spirobi(1-sila-2,5-dioxacyclopentan-3-on)at (72), 1-(N-morpholiniomethyl)spirobi(1-sila-2,5-dioxa-4-methylcyclopentan-3-on)at (73), 1-(N-morpholiniomethyl)spirobi(1-sila-2,5-dioxa-4-(i-propyl)cyclopentan-3-on)at (79)

Considered parameters
Stage	Time (s)	Intensity (μA)	Comp (10 mV)	Conductometric detector
1	50	80	0
2	70	120	50
3	20	90	0	X
4	250	50	50
5	325	120	0	X

Characteristic of the applied analytical method

Analyte	Linearity determination coefficient above 0.9987 (μg l⁻¹)	Coefficient of variation n = 6, the samples were analyzed twice (%)	Limit of detection calculated from the limit of identification and coefficients of the calibration curve (LOD) (μg l⁻¹)	Limit of quantification LOQ = 3.3 x LOD (LOQ) (μg l⁻¹)	Recovery the sample was enriched with 4 ml of a solution containing 2 μg fil-1 of the examined ion, n = 6 (%)
(72)	3.1–50.4	3.0–4.2	2.2	7.3	91 ± 5
(73)	2.8–49.6	3.2–4.5	2.1	6.9	92 ± 3
(79)	2.9–51.3	2.8–4.1	2.3	7.6	92 ± 4

Mean recovery values [1-(N-morpholiniomethyl)spirobi(1-sila-2,5-dioxacyclopentan-3-on)at (72), 1-(N-morpho liniomethyl)spirobi(1-sila-2,5-dioxa-4-methylcyclopentan-3-on)at (73), 1-(N-morpholiniomethyl)spirobi(1-sila-2,5-dioxa-4-(i-propyl)cyclopentan-3-on)at (79)] obtained on the columns used in the study (n = 5)

Type of extraction column	Mean recovery values and SD (%)
Type of extraction column	(72)	(73)	(79)
RP Si–C₁₈	85.3 ± 4.2	84.7 ± 3.9	85.1 ± 3.5
RP Si–C₈	82.2 ± 4.3	82.9 ± 4.9	83.7 ± 4.6
RP Si–FP	89.3 ± 3.9	91.3 ± 3.6	93.9 ± 4.1

Common parameters of optimal (72), (73) and (79) separation and determination by the isotachophoresis method

Parameters of the method
UV filter (nm)	200
High Voltage Limit (kV)	12
Sample rate (smp s⁻¹)	50
Polarity	+ cations

DOI: https://doi.org/10.1515/ohs-2020-0022 | Journal eISSN: 1897-3191 | Journal ISSN: 1730-413X

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Language: English

Page range: 247 - 254

Submitted on: Feb 21, 2020

Accepted on: Apr 9, 2020

Published on: Sep 25, 2020

Published by: University of Gdańsk

In partnership with: Paradigm Publishing Services

Publication frequency: 4 issues per year

Keywords:

aqueous solutions,

Related subjects:

Chemistry, other,

Geosciences, other,

Life sciences, other

© 2020 Joanna Jabłońska, Mariusz Kluska, Nikolai Erchak, Stanisław Popiel, published by University of Gdańsk
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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