_1671519862
1671519862
Hamid Shirkhanloo
sahar.zi67@gmail.com
Hamid Shirkhanloo
Analytical Methods in Environmental Chemistry Journal
AMECJournal
2645-5382
2645-5552
12
30
2022
5
04
10.24200/amecj.v5.i04
http://journal.amecj.com/index.php/AMECJ-01/issue/view/24
Determination of tetrafluoroborate in wastewaters by ion chromatography after ion pair liquid-liquid dispersive microextraction
Roman G.
Sirotkin
https://orcid.org/0000-0003-3021-9110
Elena V.
Elipasheva
https://orcid.org/0000-0003-4669-7184
Alexander V.
Knyazev
https://orcid.org/0000-0002-2880-3484
Viktoria A.
Bobrova
The ion chromatographic method was developed to determine tetrafluoroborate ion (BF4-) in different types of water using ion pair liquid-liquid dispersive microextraction. Tetrafluoroborate was extracted into an organic phase (1,2-dichloroethane) as an ion pair with a tetrabutylammonium cation (TBA+). The most complete formation of [(ТBА+)(BF4-)] was observed at ion-pair reagent concentration of at least 5 mmol L-1 (C(BF4-) ≤ 1mg L-1). Ultrasonic irradiation was used to disperse the extractant. The achieved concentration factor (K) was 29±3, and the degree of extraction (R) was 50±5%. The limit of detection of tetrafluoroborate using the microextraction technique was 7×10-3 mg L-1. The method applies to the analysis of different water origins. The presence of the main contained anions does not interfere with the microextraction and chromatographic determination of tetrafluoroborate. The maximum molar ratio of BF4- to diverse ions is 1:104 for fluoride, chloride, bromide, nitrate ions, and 1:102 for sulfate and perchlorate ions.
12
29
2022
77
86
http://creativecommons.org/licenses/by/4.0
10.24200/amecj.v5.i04.214
http://journal.amecj.com/index.php/AMECJ-01/article/view/214
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http://journal.amecj.com/index.php/AMECJ-01/article/download/214/460
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http://journal.amecj.com/index.php/AMECJ-01/article/download/214/460
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http://journal.amecj.com/index.php/AMECJ-01/article/download/214/461