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Nakano, Sumika*; Marumo, Kazuki*; Kazami, Rintaro*; Saito, Takumi*; Haraga, Tomoko; Tasaki-Handa, Yuiko*; Saito, Shingo*
Environmental Science & Technology, 55(22), p.15172 - 15180, 2021/11
Times Cited Count:5 Percentile:27.35(Engineering, Environmental)Humic acid (HA) can strongly complex with metal ions to form a supramolecular assembly via coordination binding. However, determining the supramolecular size distribution and stoichiometry between small HA unit molecules constituting HA supramolecule and metal ions has proven to be challenging. Here, we investigated the changes in the size distributions of HAs induced by Cu and Tb ions using a unique polyacrylamide gel electrophoresis (PAGE) for the separation and quantification of HA complexes and metal ions bound, followed by UV-Vis spectroscopy and EEM-PARAFAC. It was found that the supramolecular behaviors of Cu and Tb complexes with HA collected from peat and deep groundwater (HHA) differed. Our results suggest that this supramolecular stoichiometry is related to the abundance of sulfur atoms in the elemental composition of HHA. Our results provide new insights into HA supramolecules formed via metal complexation.
Kudo, Hisaaki; Sasuga, Tsuneo; Seguchi, Tadao
JAERI-Conf 97-003, p.273 - 276, 1997/03
no abstracts in English
; Ikeda, Shigetoshi*; Kudo, Hisaaki; Seguchi, Tadao; Tabata, Yoneho*
Radiation Physics and Chemistry, 50(6), p.611 - 615, 1997/00
Times Cited Count:61 Percentile:95.93(Chemistry, Physical)no abstracts in English
Nagao, Seiya;
Humic Substances and Organic Matter in soil and Water Environments: Characterization,Transformations, 0, p.71 - 79, 1996/00
no abstracts in English
; Nishii, Masanobu; Seguchi, Tadao; ;
Radiation Physics and Chemistry, 37(2), p.213 - 216, 1991/00
no abstracts in English
;
Radiation Physics and Chemistry, 33(6), p.567 - 572, 1989/00
no abstracts in English
; ;
J.Chem.Soc.,Faraday Trans.,I, 79, p.1973 - 1986, 1983/00
no abstracts in English
; ; ; Machi, Sueo
J.Appl.Polym.Sci., 23(4), p.967 - 983, 1979/00
Times Cited Count:4no abstracts in English
; Takehisa, Masaaki; Machi, Sueo
Kobunshi Rombunshu, 36(6), p.393 - 399, 1979/00
Times Cited Count:0no abstracts in English
Machi, Sueo; Yoshida, Kenzo
Genshiryoku Kogyo, 24(10), p.72 - 77, 1978/00
no abstracts in English
; ; Machi, Sueo
J.Appl.Polym.Sci., 20(12), p.3233 - 3240, 1976/12
Times Cited Count:39no abstracts in English
Sasuga, Tsuneo; Takehisa, Masaaki
J.Polym.Sci.,Polym.Phys.Ed., 12(12), p.2577 - 2578, 1974/12
no abstracts in English
; Seguchi, Tadao; Takehisa, Masaaki; Machi, Sueo
Reports on Progress in Polymer Physics in Japan, 17, p.213 - 216, 1974/00
no abstracts in English
; Takehisa, Masaaki; Machi, Sueo
J.Appl.Polym.Sci., 17(11), p.3253 - 3257, 1973/11
Times Cited Count:156no abstracts in English
Yamaguchi, Koichi; ; ; Takehisa, Masaaki
J.Polym.Sci.,Polym.Phys.Ed., 11(8), p.1573 - 1584, 1973/08
no abstracts in English
; Machi, Sueo
Journal of Polymer Science; Polymer Letters Edition, 11(2), p.115 - 120, 1973/02
no abstracts in English