ããæ°´éç
ï¼åå«ç½æ¯ç
æç½ç¹ç
ï¼ç
åä½ä¸»è¦æ¯æ°´éèåéèï¼å¯çå¨é±¼ä½ç伤å£åé±¼åµä¸ï¼æ¯è¾å¸¸è§çé±¼ç
ãç
å 主è¦æ¯é±¼ä½å伤ï¼é³çè±è½çï¼å¯¼è´ç
èä¾µå
¥ä¼¤å£ã
ããç
å ï¼å¨ææãè¿è¾æ¶é±¼ä½åå°å¤ä¼¤æå¯çè«ä½¿é±¼çç®è¤å伤å被éèå¢åä¾µå
¥ä»èææã
ããç
åä½ï¼æ°´éå±ã绵éå±çæ°´çéèã çç¶åç
å é±¼åæä¸ç
æ¶çä¸åºä»ä¹çç¶ãä¸æ¦åç°é±¼ä½é¿âç½æ¯âæ¶ï¼èä¸å·²ä¾µå
¥é±¼ä½ä¼¤å£ï¼è延å°èèç»ç»é´éä¹ä¸ãéçç
æ
åå±ï¼æ£å¤èèè
çï¼é£æ¬²åéï¼æç»æ»äº¡ãè¿ç§ç¾ç
å¨ä¸å¹´åå£å
é½å¯åçã
ãã为äºé²æ¢æ°´éç
çåçï¼é¤åºæ³¨æ*ä½æ¶å°½éé²æ¢æ伤鱼ä½å被å¯çè«å¬ä¼¤ä¹å¤ï¼è¿å¯ä»¥å¨æ°´ä¸æ¾å
¥å°éé£çï¼ä»¥æå¶æ°´éç
çåçãé±¼ä½é¿åºâç½æ¯âï¼åç°ç½è²ï¼èä¸ä¸ä¼¤å£çç»èç»ç»ç¼ ç»ç²éï¼ä½¿ç»ç»åæ»ãåæ¶ç
é±¼é£æ¬²åéï¼æåæ»äº¡ã
ããé²æ²»æ¹æ³] å¤éç¨æ°´éèåéèä¸èé«æ¸©çå¼±ç¹ï¼æé«æ°´æ¸©ï¼åé
å¤è¯ç©æ²»çï¼é常治æçå¯è¾¾90ï¼
以ä¸ãè¥æ²»çåæ¶ï¼æ²»æçå¯è¾¾100ï¼
ã
ãã1ãç¨ç¾ä¸åä¹é¶ç¹é¶äº(0.05ppm)çåéç³ç»¿åç¾ä¸åä¹äºåäº(25ppm)çç²é溶液混åå¤çï¼çæè¾å¥½ï¼
ãã2ãä¹å¯ç¨1ï¼
ç水浸泡æ°å¤©ï¼æç¨ç¾ä¸åä¹äº(2ppm)çç²åºè溶液ï¼æ¯å¤©æµ¸æ³¡6å°æ¶ï¼
ãã3ãæç¨28ï½30âçç¾ä¸åä¹äº(2ppm)ççé
¸å¥å®è¯æ¶²æµ¸æ³¡3ï½5天ï¼æç¨ç¾ä¸åä¹äº(2ppm)çç¡é
¸äºæ±è¯æ¶²æµ¸æ³¡30åéï¼
ãã4ãæç¨ç¾ä¸åä¹äºåè³ä¸å(50ï½70ppm)æµåº¦ç红æ±æº¶æ¶²æµ¸æ³¡5ï½15åéï¼
ãã5ãæç¨ç¾ä¸åä¹é¶ç¹ä¸è³é¶ç¹äº(0.1ï½0.2ppm)çç¡é
¸æ±æº¶æ¶²æ³¼æ´ï¼åå¯åå¾è¯å¥½ææã
温馨提示:答案为网友推荐,仅供参考