Development and application of diffusive gradients in thin films for in situ sampling of the organic UV filter 4-methylbenzylidene camphor (4-MBC) in waters

被引：1

作者：

Ren, Suyu ^{[1
]}

Jin, Xiaojie ^{[2
]}

Bekele, Tadiyose Girma ^{[3
]}

Lv, Min ^{[4
]}

Ding, Jing ^{[1
]}

Tan, Feng ^{[3
]}

Chen, Lingxin ^{[4
]}

机构：

[1] Yantai Univ, Sch Environm & Mat Engn, Yantai 264005, Peoples R China

[2] Shandong Marine Resource & Environm Res Inst, Yantai 264006, Peoples R China

[3] Dalian Univ Technol, Sch Environm Sci & Technol, Key Lab Ind Ecol & Environm Engn MOE, Dalian 116024, Peoples R China

[4] Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China

来源：

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH | 2023年 / 30卷 / 40期

基金：

中国国家自然科学基金;

关键词：

Organic UV filters; Diffusive gradients in thin films (DGT); Passive sampling; Coastal waters; ENDOCRINE DISRUPTING CHEMICALS; PERSONAL CARE PRODUCTS; WASTE-WATER; ENVIRONMENTAL RISK; SURFACE WATERS; ANTIBIOTICS; CALIBRATION; GROWTH; DGT;

D O I：

10.1007/s11356-023-28844-8

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

4-Methylbenzylidene camphor (4-MBC), a typical organic UV filter (OUVF) in personal care products, is considered to be a potential endocrine disruptor due to its estrogenic activity and bioaccumulation. Although 4-MBC residues have been extensively identified in aquatic waters, little is known about their occurrence, levels, and potential risk in coastal waters. This study developed a reliable sampling approach, based on diffusive gradients in thin films (DGT) with XAD-2 as the binding agent, for monitoring 4-MBC in coastal waters. The diffusion coefficients of 4-MBC in freshwater and artificial seawater were 3.65 x 10(-6) cm(2)/s and 3.83 x 10(-6) cm(2)/s, respectively. XAD-2 binding gel showed rapid adsorption to 4-MBC. The accumulated masses of 4-MBC in XAD-2 DGT increased linearly with deployed time for 7 days in freshwater and seawater, which agreed well with theoretical predictions. The sampling performance was independent of ionic strength (0.0001-0.5 M), pH (4.0-8.5), and dissolved organic matter (0-20 mg/L). Field deployment in the river estuary and bathing beach showed that DGT-measured 4-MBC concentrations were consistent in comparison with grab sampling. Environmental risk assessment showed that 4-MBC may pose a medium risk to aquatic organisms based on computed risk quotient (RQ) values. Sewage discharge is the main source of 4-MBC risk, while the residue in recreation beaches contributes more significantly in summer. The established DGT sampling is suitable for seasonal monitoring, source identification, and risk assessment of 4-MBC in coastal waters.

引用

页码：92651 / 92661

页数：11