Changes in the aquatic ecotoxicological effects of Triton X-100 after UV photodegradation

被引:0
作者
Eun Hea Jho
Seong Ho Yun
Punam Thapa
Joo-Won Nam
机构
[1] Chonnam National University,Department of Agricultural and Biological Chemistry
[2] Hankuk University of Foreign Studies,Department of Environmental Science
[3] Yeungnam University,College of Pharmacy
来源
Environmental Science and Pollution Research | 2021年 / 28卷
关键词
Pesticides; Spray adjuvants; Triton X-100; Photolysis; Toxicity;
D O I
暂无
中图分类号
学科分类号
摘要
Various spray adjuvants including surfactants are widely used in agricultural pesticide formulations, and some of them may remain in soils and waters and impose more adverse effects than active pesticide ingredients on organisms. However, previous studies are more focused on the active pesticide ingredients than the adjuvants. Thus, this study investigates the changes in toxic effects of surfactants during photodegradation, which is one way of naturally degrading contaminants in natural waters. Triton X-100, a water-soluble non-ionic surfactant, was degraded using different types of UV radiation (UVA, UVB, and UVC), and the changes in the toxic effects were determined using bioluminescent bacteria and water flea. The Triton X-100 removals were negligible with UVA within 24 h, while its removal was 81% with UVB and almost complete with UVC. The NMR spectra indicated possible molecule rearrangement after photolysis. On the other hand, the toxic effects based on the mortality of Daphnia magna and the bioluminescence of Aliivibrio fischeri increased (i.e., lower EC50 values) after photodegradation, suggesting the generation of photoproducts that are likely to have higher toxic effects or higher bioavailability. Furthermore, the sensitivities of D. magna and A. fischeri for Triton X-100 and the photodegraded Triton X-100 were different. This study suggests that the changes in the chemical composition of the Triton X-100 containing water with photodegradation can lead to changes in the relative toxic effects on different aquatic organisms. Therefore, not only the management of parent compound (i.e., Triton X-100) but also the photoproducts generated from the parent compound need to be considered when managing water environment subject to photodegradation.
引用
收藏
页码:11224 / 11232
页数:8
相关论文
共 125 条
[11]  
Weinberger P(2020)Morphological and physiological changes in Sci Total Environ 732 139247-901
[12]  
Carlisle DB(2010) for the in vitro cytotoxicity assessment of Triton X-100 Bioresour Technol 101 92-2872
[13]  
Ciarlo TJ(2003)Towards the development of an embryotoxicity bioassay with terrestrial snails: screening approach for cadmium and pesticides Chemosphere 50 871-1803
[14]  
Mullin CA(2013)Effect of nitrate on the phototreatment of Triton X-100 simulated washing waste containing 4, 4′-dibromodiphenyl ether: kinetics, products and toxicity assessment Water Res 47 2863-J257
[15]  
Frazier JL(2008)Inhibition effect of linear alkylbenzene sulphonates on the biodegradation mechanisms of activated sludge Chemosphere 70 1796-352
[16]  
Schmehl DR(2010)Environmental properties and effects of nonionic surfactant adjuvants in pesticides: a review J Autoimmun 34 J247-5064
[17]  
Contardo-Jara V(2007)Ozonation of trimethoprim in aqueous solution: identification of reaction products and their toxicity Toxicol Environ Chem 89 347-787
[18]  
Klingelmann E(2013)Effects of nonionic and ionic surfactants on survival, oxidative stress, and cholinesterase activity of planarian Water Res 47 5052-16762
[19]  
Wiegand C(2019)Light, including ultraviolet Sci Total Environ 652 780-575
[20]  
Cortés JA(2020)Comparative sensitivities of the tropical cladoceran, Environ Sci Pollut Res 27 16754-1620