微塑料进入人体后，目前科学界能确认的危害边界在哪？
Once microplastics enter the body, where does the confirmed harm boundary currently stand?
已在血液、胎盘、粪便中检出微塑料，但在人体的明确致病证据仍有限；主要担忧是作为载体吸附持久污染物、引发慢性炎症。结论共识是“需要警惕、但危害剂量与机制尚未完全定论”。
Microplastics are found in blood, placenta and stool, but clear human disease proof is still limited; the worry is as carriers of persistent pollutants and chronic inflammation. The consensus: be alert, but dose and mechanism are not yet settled.
难度 专业 · 适合 初中(12-15)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：本题原挂出处与答案内容不符，已撤回；具体书目待补，暂不展示来源。
本题原挂出处与答案内容不符，已撤回；具体书目待补。
Previous citation withdrawn as unsupported for this answer; a specific source is pending.
#微塑料 #人体 #危害边界
洗衣会产生微塑料吗？怎么减少？
Does laundry release microplastics, and how to reduce it?
合成纤维衣物机洗时会脱落微纤维进入废水。可用洗衣袋或过滤器拦截、选天然纤维、低温轻柔洗、减少洗涤频次来降低。
Synthetic garments shed microfibers into wastewater during machine washing. Use a filter bag, choose natural fibers, wash cold and gentle, and wash less often to cut it.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#微塑料 #洗衣 #拦截
污水处理厂能拦住微塑料吗？
Can wastewater treatment plants capture microplastics?
能拦下大部分（常>90%），主要靠初级沉淀和活性污泥的絮体吸附，但最终有少量随出水或污泥进入环境。污泥农用可能成为微塑料回归土壤的渠道。
They capture most (often >90%), mainly via primary settling and floc adsorption in activated sludge, but a fraction escapes in effluent or sludge. Sludge used as fertilizer can return microplastics to soil.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#微塑料 #水处理 #污泥
什么是“次生微塑料”与“初生微塑料”的区别？
What distinguishes secondary from primary microplastics?
初生微塑料是出厂即为小颗粒（如磨砂 microbeads、塑料颗粒）；次生微塑料是大塑料在光照、机械、生物作用下破碎降解形成的碎片。后者占环境中微塑料主体。
Primary microplastics are tiny from manufacture (exfoliating beads, pellets); secondary ones form when larger plastics fragment under UV, mechanical and biological forces. The latter dominate environmental microplastics.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
左玉辉 主编,《环境学》第2版,高等教育出版社,2009
Zuo Yuhui ed., Environmental Science, 2nd ed., Higher Education Press, 2009
独立核验依据 · Independent verification: 核验依据 2 DOUBAN ISBN 标识 9787040283327（按标识回读: 环境学）
#微塑料 #来源 #塑料