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Original research — experimental, observational, or case-control study. Direct primary evidence.
Human Health Effects
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Leaching behavior of fluorescent additives from microplastics and the toxicity of leachate to Chlorella vulgaris
The Science of The Total Environment2019
324 citations
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Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Score: 55
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0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Xiangliang Pan
Xiangliang Pan
Hongwei Luo,
Dongqin He,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Dongqin He,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Hongwei Luo,
Yahui Xiang,
Yahui Xiang,
Yaoyao Zhao,
Yu Li,
Yahui Xiang,
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Yahui Xiang,
Dongqin He,
Dongqin He,
Dongqin He,
Dongqin He,
Dongqin He,
Dongqin He,
Dongqin He,
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Yu Li,
Yu Li,
Yu Li,
Yaoyao Zhao,
Yaoyao Zhao,
Yaoyao Zhao,
Dongqin He,
Dongqin He,
Dongqin He,
Dongqin He,
Dongqin He,
Yaoyao Zhao,
Xiangliang Pan
Yahui Xiang,
Yahui Xiang,
Yahui Xiang,
Yahui Xiang,
Hongwei Luo,
Hongwei Luo,
Xiangliang Pan
Dongqin He,
Xiangliang Pan
Dongqin He,
Yu Li,
Yu Li,
Dongqin He,
Yaoyao Zhao,
Dongqin He,
Dongqin He,
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Dongqin He,
Dongqin He,
Dongqin He,
Xiangliang Pan
Shuo Wang,
Xiangliang Pan
Dongqin He,
Xiangliang Pan
Dongqin He,
Yaoyao Zhao,
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Dongqin He,
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Yu Li,
Hongwei Luo,
Xiangliang Pan
Xiangliang Pan
Shuo Wang,
Hongwei Luo,
Xiangliang Pan
Dongqin He,
Hongwei Luo,
Xiangliang Pan
Xiangliang Pan
Hongwei Luo,
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Hongwei Luo,
Xiangliang Pan
Hongwei Luo,
Xiangliang Pan
Hongwei Luo,
Xiangliang Pan
Hongwei Luo,
Shuo Wang,
Xiangliang Pan
Hongwei Luo,
Xiangliang Pan
Xiangliang Pan
Hongwei Luo,
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Yu Li,
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Xiangliang Pan
Summary
Researchers studied how fluorescent chemical additives leach from polyurethane sponge microplastics into different water environments. They found that the amount of additives released increased with higher pH and longer leaching times, with basic and saline waters extracting the most chemicals. The leachate reduced photosynthetic efficiency in the green alga Chlorella vulgaris, suggesting that chemicals leaching from microplastics may pose ecological risks to aquatic organisms.
Chemical additives leaching from microplastics and their effects on physiology of microalgae are of environmental significance. So far, these issues remain unclear. Here, the leaching behavior of fluorescent additives from polyurethane sponge microplastics in simulated (acidic, saline, and basic water) and natural waters (river, lake, wetland, and sea water) was investigated. Release amount of additives increased with increasing solution pH and leaching time. The maximum release amount was reached at the leaching time of 12-24 h and the 3,3'-diaminobenzidine-like substances were identified in the leachate. The leached concentrations of fluorescent additives in simulated and natural waters followed the order of basic water > saline water > seawater > West Lake > River > Wetland. Effects of leachate and microplastics on growth and photosynthesis of Chlorella vulgaris were further evaluated. The maximum quantum efficiency of photosystem II (F/F) decreased with increasing leachate concentrations. Only high content (1.6 g L) of microplastics exerted significant inhibitory influence on cell photosynthesis when microalgae were exposed to microplastics alone. Retention of algal cells inside the porous sponge microplastics did not change their photosynthetic efficiency. These findings indicate that leaching process of additives from microplastics depends mainly on water environments and the leached chemicals may pose ecological risks to aquatic organisms.