什么是海洋“死区（dead zone）”，它是如何形成的？
What is a marine 'dead zone,' and how does it form?
死区是水体中溶解氧极低（缺氧）以致大多数海洋生物无法生存的区域，常与陆源营养盐输入引发的富营养化和藻类分解耗氧有关。全球已记录的海岸带死区超过400处，密西西比河口的墨西哥湾死区是其中最大之一。
A dead zone is an area of water with such low dissolved oxygen (hypoxia) that most marine life cannot survive, usually tied to eutrophication from land-based nutrient inputs and the oxygen consumed as algae decompose. More than 400 coastal dead zones have been documented worldwide, with the Gulf of Mexico hypoxic zone near the Mississippi Delta among the largest.
难度 专业 · 适合 高中(15-18)
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）
#死区 #缺氧 #墨西哥湾 #营养盐 #溶解氧
《斯德哥尔摩公约》和《水俣公约》分别管控哪类污染物？
What classes of pollutants do the Stockholm and Minamata Conventions control, respectively?
《斯德哥尔摩公约》（2004生效）管控持久性有机污染物（POPs），如滴滴涕、多氯联苯和二噁英，这类物质难降解、可远距离迁移并在食物链富集。《水俣公约》（2017生效）则专门针对汞及其化合物，限制其开采、使用和排放，以保护神经健康和生态系统。
The Stockholm Convention (entered into force 2004) controls persistent organic pollutants (POPs) such as DDT, PCBs, and dioxins—substances that resist degradation, travel long distances, and bioaccumulate in food chains. The Minamata Convention (2017) targets mercury and its compounds, restricting their mining, use, and emissions to protect neurological health and ecosystems.
难度 专业 · 适合 高中(15-18)
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Previous citation withdrawn as unsupported for this answer; a specific source is pending.
#斯德哥尔摩公约 #持久性有机污染物 #水俣公约 #汞 #二噁英
全氟化合物（PFAS）为何被称为'永久化学品'且难以从水中去除？
Why are PFAS called 'forever chemicals' and hard to remove from water?
PFAS含极稳定的碳-氟键，几乎不被生物或化学降解，可在人体与环境中累积数十年。其溶于水且沸点高，常规水处理的混凝、氯消毒无效，须用活性炭吸附或反渗透，成本高且产生含氟污泥难题。
PFAS contain extremely stable carbon-fluorine bonds that resist biodegradation and persist for decades in bodies and ecosystems. They dissolve in water and resist coagulation or chlorination; only activated carbon or reverse osmosis works, at high cost and with fluorinated-sludge disposal problems.
难度 专业 · 适合 高中(15-18)
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）
#PFAS #永久化学品
制药与个人护理品（PPCPs）作为新兴污染物有何独特风险？
What unique risks do PPCPs pose as emerging contaminants?
PPCPs包括抗生素、激素、防晒剂等，污水处理厂难以完全去除，即使浓度极低也可能干扰野生动物内分泌、促进抗性基因传播，并通过饮水长期低剂量暴露，其混合物效应的毒理学证据仍不足。
PPCPs—antibiotics, hormones, sunscreens—pass through sewage treatment incompletely; even trace levels can disrupt wildlife endocrine systems and spread resistance genes, with long-term low-dose drinking-water exposure whose mixture toxicity is still poorly characterized.
难度 专业 · 适合 高中(15-18)
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）
#PPCP #内分泌干扰
微塑料进入水体后，会通过食物链回到人体吗？
Once microplastics enter water, can they return to humans via the food chain?
微塑料会被浮游生物和滤食性动物摄入，并可能沿食物链传递；已在鱼贝、食盐甚至饮用水中检出。虽然对人体的确切危害仍在研究，但其广泛存在已引起全球监测和管控关注。
Microplastics are ingested by plankton and filter-feeders and may pass up the food chain; they have been found in fish, shellfish, salt and even tap water. Exact harm to humans is still studied, but their ubiquity has prompted global monitoring and control efforts.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source
A. L. Andrady，《海洋环境中的微塑料》，《Marine Pollution Bulletin》第62卷（2011）：1596–1605，DOI: 10.1016/j.marpolbul.2011.05.030
A. L. Andrady, 'Microplastics in the marine environment', Marine Pollution Bulletin 62 (2011): 1596-1605, DOI: 10.1016/j.marpolbul.2011.05.030
独立核验依据 · Independent verification: 核验依据 1 CROSSREF 标识 10.1016/j.marpolbul.2011.05.030：Microplastic
#微塑料 #食物链 #人体暴露
水俣病与哪种重金属污染有关？
Which heavy-metal pollution is linked to Minamata disease?
水俣病是日本水俣湾因工厂排放含甲基汞废水、经鱼类富集后被人食用而引发的中毒事件。甲基汞会严重损伤神经系统，尤其危害胎儿和婴幼儿。
Minamata disease was caused by methylmercury discharged from a factory into Japan's Minamata Bay, where it built up in fish eaten by local people. Methylmercury severely damages the nervous system, especially in fetuses and infants.
难度 进阶 · 适合 小学高段(9-12)
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）
#水俣病 #甲基汞 #重金属
BOD 和 COD 分别衡量什么？
What do BOD and COD each measure?
BOD（生化需氧量）是微生物分解水中有机物所消耗的溶解氧，反映可被生物降解的污染程度。COD（化学需氧量）是用化学氧化剂测出的总耗氧量，包含难生物降解的部分，二者都用来判断水质污染程度。
BOD (biochemical oxygen demand) is the dissolved oxygen microbes use to break down organic matter, showing how much biodegradable pollution is present. COD (chemical oxygen demand) measures total oxidizable matter including harder-to-degrade substances; both indicate water pollution.
难度 进阶 · 适合 初中(12-15)
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）
#BOD #COD #水质指标
微塑料是怎么进入饮用水和食盐的？
How do microplastics get into drinking water and salt?
塑料垃圾在环境中破碎成小于5毫米的碎片，经河流汇入海洋，被贝类、鱼类摄入后进入食物链；海盐由海水蒸发制得，自然富集微塑料，自来水则来自受污染的江河湖泊，故二者均可检出。
Plastic waste fragments below 5 mm, flows to the sea via rivers, and enters the food chain through shellfish and fish; sea salt is made by evaporating seawater that concentrates microplastics, and tap water draws from contaminated lakes and rivers—so both can contain them.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source
A. L. Andrady，《海洋环境中的微塑料》，《Marine Pollution Bulletin》第62卷（2011）：1596–1605，DOI: 10.1016/j.marpolbul.2011.05.030
A. L. Andrady, 'Microplastics in the marine environment', Marine Pollution Bulletin 62 (2011): 1596-1605, DOI: 10.1016/j.marpolbul.2011.05.030
独立核验依据 · Independent verification: 核验依据 1 CROSSREF 标识 10.1016/j.marpolbul.2011.05.030：Microplastic
#微塑料 #食物链
什么是地下水污染，它为什么特别难治理？
What is groundwater pollution and why is it hard to fix?
污染物渗入含水层后随缓慢流动扩散，而地下水替换周期长达数十年到上千年。一旦污染，抽水处理或原位修复都极其缓慢昂贵，因此预防远胜于治理。
Once contaminants seep into aquifers they spread with slow flow, and groundwater turnover takes decades to millennia. Cleanup by pumping or in-situ remediation is extremely slow and costly, so prevention far outweighs treatment.
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）
#地下水 #含水层
什么是“富营养化”，它通常由哪些人类活动引起？
What is eutrophication, and what human activities typically cause it?
富营养化是水体因氮、磷等营养盐过量而藻类大量繁殖、随后耗氧分解导致水质恶化的过程。主要人为来源包括农业化肥径流、畜禽养殖废水和城市生活污水，它会使水体变绿、发臭并威胁水生生物。
Eutrophication is the degradation of water quality when excess nutrients—mainly nitrogen and phosphorus—trigger algal blooms that later decompose and consume oxygen. Major human sources include agricultural fertilizer runoff, livestock wastewater, and municipal sewage, which turn waters green, foul-smelling, and hostile to aquatic life.
难度 进阶 · 适合 初中(12-15)
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）
#富营养化 #氮磷 #藻类水华 #农业径流 #缺氧
重金属污染的水能用烧开解决吗？
Does boiling fix heavy-metal water pollution?
不能。煮沸只能杀灭微生物，无法去除铅、砷、镉等重金属，反而因蒸发使浓度略升。去重金属需反渗透、离子交换或专门滤料。
No. Boiling kills microbes but cannot remove lead, arsenic or cadmium—and can even concentrate them as water evaporates. Removing metals needs reverse osmosis, ion exchange or special media.
难度 进阶 · 适合 小学低段(6-8)
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）
#重金属 #饮水安全
地下水硝酸盐超标为什么危险？
Why is excess nitrate in groundwater dangerous?
过量施用的氮肥经雨水下渗会污染地下水，使井水中硝酸盐浓度升高。婴儿饮用后可能引发“蓝婴综合征”（高铁血红蛋白血症），成年人长期高暴露也与健康风险相关。
Excess nitrogen fertilizer seeps through rain into groundwater, raising nitrate levels in wells. In infants it can cause 'blue baby syndrome' (methemoglobinemia), and long-term adult exposure is also linked to health risks.
难度 进阶 · 适合 小学低段(6-8)
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）
#硝酸盐 #地下水 #蓝婴综合征
水里避孕药残留会让鱼变性?环境激素的争议在哪里?
Can birth-control residues in water feminize fish? Where does the endocrine-disruptor debate stand?
合成雌激素(如避孕药中的乙炔雌二醇)随尿液进入污水,常规处理难以完全去除。英国实验把雄性虹鳟养在污水处理厂排口下游,检出了卵黄蛋白原——本该只在雌鱼产卵期出现的蛋白;高浓度下雄鱼甚至长出卵巢组织。人体影响更难断言:干扰甲状腺与性激素通路的物质(邻苯二甲酸酯、双酚A等)暴露普遍,观察研究提示与生殖指标相关,但剂量-反应关系与因果链仍有争议。监管思路因此转向混合物整体评估与源头减量——药房回收过期药、无双酚A收据纸,都是这条链上的小闸门。
Synthetic estrogens like ethinyl estradiol slip through conventional sewage treatment. British experiments caging male rainbow trout below treatment works found vitellogenin — an egg-yolk protein females produce — in male blood; at high exposures males even grew ovarian tissue. Human effects are harder to assert: endocrine-active chemicals (phthalates, bisphenol A) are ubiquitous, observational studies hint at reproductive endpoints, but dose-response and causation remain contested. Regulation shifts toward mixture-level assessment plus source control — pharmacy take-backs and BPA-free receipt paper are small valves on this pipe.
难度 进阶 · 适合 高中(15-18)
CC BY 4.0 · 已核验 · Verified 2026-11-02结论有争议 · Contested
来源 · Source
Kidd 等,《Collapse of a fish population after exposure to a synthetic estrogen»,PNAS 第104卷,2007
K. A. Kidd et al., Collapse of a fish population after exposure to a synthetic estrogen, PNAS 104, 2007
独立核验依据 · Independent verification: 核验依据 1 CROSSREF 标识 10.1073/pnas.0609568104：Collapse of a fish p
#内分泌干扰物 #乙炔雌二醇 #水质安全
家用含磷洗衣粉和河水变绿有关系吗？
Do phosphorus detergents relate to green rivers?
有关系。含磷洗涤废水进入河流湖泊提供营养，促使蓝绿藻大量繁殖使水面发绿发臭。许多地区已限磷或无磷化以缓解该问题。
Yes. Phosphorus-rich wastewater feeds algae, turning rivers and lakes green and smelly with blooms. Many regions have restricted or banned phosphate detergents to curb this.
难度 入门 · 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）
#磷 #藻类
什么是“微塑料”，它们如何进入自然环境？
What are microplastics, and how do they enter the natural environment?
微塑料是直径小于5毫米的塑料碎片，分为生产时就很小的一次微塑料（如磨砂颗粒）和由大塑料破损产生的二次微塑料。它们随污水、垃圾和大气沉降进入河流、海洋乃至土壤，已被在深海、极地和人体中检出。
Microplastics are plastic fragments smaller than 5 millimeters, divided into primary microplastics made small on purpose (such as scrub beads) and secondary ones formed when larger plastics break apart. They enter rivers, oceans, and even soils via wastewater, litter, and atmospheric deposition, and have been found in the deep sea, polar regions, and the human body.
难度 入门 · 适合 小学低段(6-8)
CC BY 4.0 · 已核验 · Verified 2026-11-03
来源 · Source
A. L. Andrady，《海洋环境中的微塑料》，《Marine Pollution Bulletin》第62卷（2011）：1596–1605，DOI: 10.1016/j.marpolbul.2011.05.030
A. L. Andrady, 'Microplastics in the marine environment', Marine Pollution Bulletin 62 (2011): 1596-1605, DOI: 10.1016/j.marpolbul.2011.05.030
独立核验依据 · Independent verification: 核验依据 1 CROSSREF 标识 10.1016/j.marpolbul.2011.05.030：Microplastic
#微塑料 #5毫米 #一次微塑料 #二次微塑料 #海洋污染