Difluoroboron Curcumin Complex: A Study on Determination of Acidity Constants and Quantitative Analysis of Arsenic(III)

Difluoroboron Curcumin Complex: A Study on Determination of Acidity Constants and Quantitative Analysis of Arsenic(III)

In this study, the complex of difluoroboron curcumin (BF2-Cur) has been synthesized and characterized via the combination of Boron trifluoride-diethyl etherate ((C2H5)2OBF3) and curcumin. However, the new dissociation constants, pKa1 and pKa2 of the BF2-Cur complex, have been indicted by the v...

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Những tác giả chính: Lê, Thị Thanh Trân, Nguyen Quoc Thang, Tran Nguyen Minh An, Do Tam Nhan, Mai Ngoc Tan, Le Van Tan
Định dạng: Journal article
Ngôn ngữ:English
Được phát hành: Indonesia 2022
Những chủ đề:
BF2-Cur; total arsenic; UV-Vis spectrophotometry; the conformation of complex; UFF
Truy cập trực tuyến:http://scholar.dlu.edu.vn/handle/123456789/760
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Thư viện lưu trữ: Thư viện Trường Đại học Đà Lạt
id oai:scholar.dlu.edu.vn:123456789-760
record_format dspace
institution Thư viện Trường Đại học Đà Lạt
collection Thư viện số
language English
topic BF2-Cur; total arsenic; UV-Vis spectrophotometry; the conformation of complex; UFF
spellingShingle BF2-Cur; total arsenic; UV-Vis spectrophotometry; the conformation of complex; UFF
Lê, Thị Thanh Trân
Nguyen Quoc Thang
Tran Nguyen Minh An
Do Tam Nhan
Mai Ngoc Tan
Le Van Tan
Difluoroboron Curcumin Complex: A Study on Determination of Acidity Constants and Quantitative Analysis of Arsenic(III)
description In this study, the complex of difluoroboron curcumin (BF2-Cur) has been synthesized and characterized via the combination of Boron trifluoride-diethyl etherate ((C2H5)2OBF3) and curcumin. However, the new dissociation constants, pKa1 and pKa2 of the BF2-Cur complex, have been indicted by the values of 8.44 ± 0.16 and 9.76 ± 0.13, respectively. On the other hand, the reagent was also used to determine As(III) in aqueous solutions by UV–Vis spectrophotometry. As a result, the method was validated for accuracy, precision, linearity, and sensitivity, and the linear range was from 1.0 to 25.0 µmol/L, with the linear regression, A = 0.0027 C + 0.0106, correlation coefficient R2 = 0.9969. Besides, the limit of detection (LoD) and limit of quantification (LoQ) were determined as 0.83 and 2.10 µmol/L, respectively. Thus, the developed method is successfully used for quantitative analysis of total arsenic in wastewater by reducing As(V) to As(III), then determining As(III) with high accuracy results.
format Journal article
author Lê, Thị Thanh Trân
Nguyen Quoc Thang
Tran Nguyen Minh An
Do Tam Nhan
Mai Ngoc Tan
Le Van Tan
author_facet Lê, Thị Thanh Trân
Nguyen Quoc Thang
Tran Nguyen Minh An
Do Tam Nhan
Mai Ngoc Tan
Le Van Tan
author_sort Lê, Thị Thanh Trân
title Difluoroboron Curcumin Complex: A Study on Determination of Acidity Constants and Quantitative Analysis of Arsenic(III)
title_short Difluoroboron Curcumin Complex: A Study on Determination of Acidity Constants and Quantitative Analysis of Arsenic(III)
title_full Difluoroboron Curcumin Complex: A Study on Determination of Acidity Constants and Quantitative Analysis of Arsenic(III)
title_fullStr Difluoroboron Curcumin Complex: A Study on Determination of Acidity Constants and Quantitative Analysis of Arsenic(III)
title_full_unstemmed Difluoroboron Curcumin Complex: A Study on Determination of Acidity Constants and Quantitative Analysis of Arsenic(III)
title_sort difluoroboron curcumin complex: a study on determination of acidity constants and quantitative analysis of arsenic(iii)
publisher Indonesia
publishDate 2022
url http://scholar.dlu.edu.vn/handle/123456789/760
_version_ 1768305839452454912
spelling oai:scholar.dlu.edu.vn:123456789-7602022-08-04T08:46:57Z Difluoroboron Curcumin Complex: A Study on Determination of Acidity Constants and Quantitative Analysis of Arsenic(III) Lê, Thị Thanh Trân Nguyen Quoc Thang Tran Nguyen Minh An Do Tam Nhan Mai Ngoc Tan Le Van Tan BF2-Cur; total arsenic; UV-Vis spectrophotometry; the conformation of complex; UFF In this study, the complex of difluoroboron curcumin (BF2-Cur) has been synthesized and characterized via the combination of Boron trifluoride-diethyl etherate ((C2H5)2OBF3) and curcumin. However, the new dissociation constants, pKa1 and pKa2 of the BF2-Cur complex, have been indicted by the values of 8.44 ± 0.16 and 9.76 ± 0.13, respectively. On the other hand, the reagent was also used to determine As(III) in aqueous solutions by UV–Vis spectrophotometry. As a result, the method was validated for accuracy, precision, linearity, and sensitivity, and the linear range was from 1.0 to 25.0 µmol/L, with the linear regression, A = 0.0027 C + 0.0106, correlation coefficient R2 = 0.9969. Besides, the limit of detection (LoD) and limit of quantification (LoQ) were determined as 0.83 and 2.10 µmol/L, respectively. Thus, the developed method is successfully used for quantitative analysis of total arsenic in wastewater by reducing As(V) to As(III), then determining As(III) with high accuracy results. 21 5 1271 - 1280 2022-08-04T08:46:52Z 2022-08-04T08:46:52Z 2021-05 Journal article Bài báo đăng trên tạp chí quốc tế (có ISSN), bao gồm book chapter http://scholar.dlu.edu.vn/handle/123456789/760 10.22146/ijc.66990 en Indones. J. Chem. [1] Saxena, G., and Bharagava, R.N., 2017, “Organic and Inorganic Pollutants in Industrial Wastes, Their Ecotoxicological Effects” in Environmental Pollutants and Their Bioremediation Approaches, 1st Ed., Eds. 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