é£åä¸äºç¡é ¸çè¿éä¼å¼èµ·äºç¡é ¸çä¸æ¯ã
é«åéçäºç¡é ¸çä¼äº§çå¾å¤§æ¯æ§ã误é£äºäºç¡é ¸çä¼å¯¼è´äºç¡é ¸çç±»é£ç©ä¸æ¯ã
äºç¡é ¸çè½ä½¿è¡æ¶²ä¸æ£å¸¸æºæ°§çä½éè¡çº¢èç½æ°§åæé«éè¡çº¢èç½ï¼å è失å»æºæ°§è½åèå¼èµ·ç»ç»ç¼ºæ°§ã
äºç¡é ¸çæ¯å§æ¯ç©è´¨ï¼æ人æå ¥0.2ä¸0.5å å³å¯å¼èµ·ä¸æ¯ï¼3å å³å¯è´æ»ãäºç¡é ¸çåæ¶è¿æ¯ä¸ç§è´çç©è´¨ã
æ®ç 究ï¼é£éçä¸æ£è æå ¥çäºç¡é ¸çéåæ£ç¸å ³æ§ï¼äºç¡é ¸ççè´çæºçæ¯:å¨èé ¸çç¯å¢ä¸äºç¡é ¸çä¸é£ç©ä¸ç仲èºãåèºåé °èºçååºçæ强è´çç©Nä¸äºç¡èºãäºç¡èºè¿è½å¤éè¿èçè¿å ¥èå¿ä½å ï¼å¯¹èå¿æè´ç¸ä½ç¨ã
æ©å±èµæï¼
æ£æµäºç¡é ¸ççæ¹æ³ï¼
1.é£çä¸äºç¡é ¸ççå¿«éæ£æµåé£çä¸äºç¡é ¸ççå¿«éé´å«
ç¨è¢å é带å°åºåé£ç1å¹³åºï¼å å ¥å°æ£æµç®¡ä¸ï¼å å ¥è¸é¦æ°´æ纯åæ°´è³1mlå»åº¦å¤ï¼çä¸çï¼å°åºä½é¨åæ溶ï¼10åéåä¸æ åè²æ¿å¯¹æ¯ï¼è¯¥è²æ¿ä¸çæ°å¼ä¹ä¸10å³ä¸ºé£çä¸äºç¡é ¸ççå«émg/kgï¼ï¼å½æ è§å®é£çï¼ç²¾çï¼ä¸äºç¡é ¸ççééå«çæ ååºâ¤2mg/kgï¼ã
å½æ ·ååºç°è¡çº¢è²ä¸ææ²æ·äº§çæå¾å¿«è¤ªè²åæé»è²æ¶ï¼å¯å¤å®äºç¡é ¸çå«éç¸å½é«ï¼ææ ·åæ¬èº«å°±æ¯äºç¡é ¸çã
2.液ä½æ ·åæ£æµï¼ç´æ¥åæ¾æ¸ 液ä½æ ·å1mlå å ¥å°æ£æµç®¡ä¸ï¼çä¸çï¼å°è¯åæ溶ï¼10åéåä¸æ åè²æ¿å¯¹æ¯ï¼æ¾åºä¸æ£æµç®¡ä¸æº¶æ¶²é¢è²ç¸åçè²é¶ï¼è¯¥è²é¶ä¸çæ°å¼å³ä¸ºæ ·åä¸äºç¡é ¸ççå«émg/Lï¼ä»¥NaNO2计ï¼ãçä¹³åè±æµä¹å¯ç´æ¥æ£æµï¼ç»æä¸å¾è¶ è¿0.25mg/Lï¼æé¢è²ç液ä½æ ·åå¯å å ¥ä¸äºæ´»æ§çè±è²è¿æ»¤åæµå®ï¼ã
3.åºä½æååºä½æ ·åæ£æµï¼åç²ç¢ååçæ ·å1.0gæ1.0mlè³10mlæ¯è²ç®¡ä¸ï¼å è¸é¦æ°´æå»ç¦»åæ°´ï¼çº¯åæ°´ï¼è³å»åº¦ï¼å åéæåæ¾ç½®ï¼åä¸æ¸ 液ï¼æè¿æ»¤æ离å¿å¾å°çä¸æ¸ 液ï¼1.0mlå å ¥å°æ£æµç®¡ä¸ï¼çä¸çï¼å°è¯åæ溶ï¼10åéåä¸æ åè²æ¿å¯¹æ¯ï¼è¯¥è²æ¿ä¸çæ°å¼ä¹ä¸10å³ä¸ºæ ·åä¸äºç¡é ¸ççå«émg/kgï¼Lï¼ä»¥NaNO2计ï¼ã
å¦ææµè¯ç»æè¶ åºè²æ¿ä¸çæé«å¼ï¼å¯å®éç¨éåæµå®ï¼å¹¶å¨è®¡ç®ç»ææ¶ä¹ä¸ç¨éåæ°ï¼å¦ä»10mlæ¯è²ç®¡ä¸ååº1.0mLè½¬å ¥å¦ä¸æ¯10mlæ¯è²ç®¡ä¸ï¼å æ°´è³å»åº¦ï¼ä»ä¸å1.0mLå å ¥å°æ£æµç®¡ä¸æµå®ï¼æµè¯ç»æä¹ä¸100ï¼åç¨éï¼å³ä¸ºæ ·åä¸äºç¡é ¸ççå«éã