AI 建议用纸巾或水清理实验室中的浓硫酸泄漏，忽略中和和个人防护装备要求
AI advises using paper towels or water to clean up a concentrated sulfuric acid spill in a laboratory, ignoring neutralization and PPE requirements
ID: safety/chemical-spill-lab-protocol
版本兼容性
| 版本 | 状态 | 引入 | 弃用 | 备注 |
|---|---|---|---|---|
| OSHA 29 CFR 1910.1450 (Laboratory Standard) | active | — | — | — |
| ACS Safety Guidelines for Chemical Spills | active | — | — | — |
| NFPA 45 (Standard on Fire Protection for Laboratories Using Chemicals) | active | — | — | — |
根因分析
浓硫酸（H2SO4）是一种强脱水剂，与水发生放热反应（可能沸腾和飞溅）。纸巾吸收酸液，扩散并产生热量，可能引燃有机材料。正确规程：用碳酸氢钠（小苏打）或碳酸钙中和，然后用惰性材料（蛭石、沙子）吸收。必须穿戴PPE（耐酸手套、护目镜、实验服）。AI可能混淆弱酸泄漏（如乙酸）或一般清洁建议。
English
Concentrated sulfuric acid (H2SO4) is a strong dehydrating agent and causes exothermic reactions with water (can boil and splash). Paper towels absorb acid, spreading it and generating heat, potentially igniting organic materials. Proper protocol: neutralize with sodium bicarbonate (baking soda) or calcium carbonate, then absorb with inert material (vermiculite, sand). PPE (acid-resistant gloves, goggles, lab coat) is mandatory. AI may confuse with weak acid spills (e.g., acetic acid) or general cleaning advice.
官方文档
https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.1450解决方案
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Evacuate the area, ventilate, and don acid-resistant PPE (nitrile gloves, chemical splash goggles, lab coat). For small spills (<1 L), carefully cover with sodium bicarbonate (baking soda) until fizzing stops. Use a plastic scoop to transfer neutralized residue to a chemical waste container. For large spills, use a spill pillow or vermiculite to contain, then neutralize.
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If sodium bicarbonate is unavailable, use calcium carbonate (limestone powder) or soda ash (sodium carbonate). For extremely concentrated acid (>95%), consider using sand or diatomaceous earth first to absorb, then neutralize the absorbed material. Never add water directly to the spill.
无效尝试
常见但无效的做法:
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90% 失败
Water reacts with concentrated H2SO4 exothermically (temperature can exceed 100°C), causing splashing and potential burns. The heat can also damage lab surfaces or ignite nearby combustibles.
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70% 失败
Universal absorbents may not neutralize acid; they only soak it up, leaving corrosive residue. Some pads are hydrophobic and won't absorb concentrated acid effectively.
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85% 失败
Concentrated H2SO4 degrades latex rapidly (within seconds). Use nitrile or neoprene gloves; safety glasses do not protect against splashes (goggles required).