Measurements and future projections of Gd-based contrast agents for MRI exams in wastewater treatment plants in the Tokyo metropolitan area

被引：11

作者：

Inoue, Kazumasa ^{[1
]}

Fukushi, Masahiro ^{[1
]}

Sahoo, Sarata Kumar ^{[2
]}

Veerasamy, Nimelan ^{[1
,2
]}

Furukawa, Akira ^{[1
]}

Soyama, Sho ^{[1
]}

Sakata, Ami ^{[1
]}

Isoda, Ryo ^{[1
]}

Taguchi, Yoshiaki ^{[1
]}

Hosokawa, Shota ^{[3
]}

Sagara, Hiroaki ^{[1
]}

Natarajan, Thennaarassan ^{[1
]}

机构：

[1] Tokyo Metropolitan Univ, Grad Sch Human Hlth Sci, Dept Radiol Sci, Arakawa Ku, 7-2-10 Higashiogu, Tokyo 1168551, Japan

[2] Natl Inst Quantum & Radiol Sci & Technol, Environm Radionuclides Res Grp, Inage Ku, 4-9-1 Anagawa, Chiba 2638555, Japan

[3] Hirosaki Univ, Grad Sch Hlth Sci, Dept Radiat Sci, 66-1 Hon Cho, Hirosaki, Aomori 0368564, Japan

来源：

MARINE POLLUTION BULLETIN | 2022年 / 174卷

关键词：

Anthropogenic gadolinium; Gd-based contrast agent; Wastewater; MRI; Rare earth element; RARE-EARTH-ELEMENTS; ANTHROPOGENIC GADOLINIUM; SURFACE-WATER; RIVER WATERS; HOSPITAL EFFLUENTS; DRINKING-WATER; RHINE RIVER; TAP WATER; SPECIATION; SEWAGE;

D O I：

10.1016/j.marpolbul.2021.113259

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Large amounts of Gd-based contrast agents are used in magnetic resonance imaging (MRI) that are then excreted in urine. These agents are subsequently discharged into the environment because they are difficult to remove by usual sewage treatment techniques. In this study, changes of the Gd anomaly during wastewater treatment processes were determined by analyzing wastewater samples and the possibility for future prediction of the changes was evaluated based on the relationship between the Gd anomaly and the number of MRI devices in use. After the wastewater treatment processes, the values of final effluent were increased 1.8 times compared to those of influent, and the Gd anomaly of effluent had a positive correlation to the number of MRI devices. The finding suggested that the changes of environmental impact were predictable based on the number of MRI devices.

引用

页数：8

共 51 条

[1]

2020b Tokyo Metropolitan Government, OV BUR SEW

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