ÈËÉú¾ÍÊDz©

EN/PT/ES

ÖØ½ðÊôµÄΣº¦¼°¶¾ÐÔ


Ò»¡¢Ç¦µÄΣº¦¼°Öж¾ÌåÏÖ


1¡¢Î£º¦

£¨1£©¶ÔÉñ¾­ÏµÍ³Æð×÷Óà £¬£¬£¬·ºÆðÉñ¾­ÐéÈõ¼°Öж¾ÐÔ¶à·¢Éñ¾­Ñס£¡£

£¨2£©ÒÖÖÆÑªºìÂÑ°×µÄºÏ³É £¬£¬£¬²¢ÓÐÈÜѪ×÷Óà £¬£¬£¬¶¯ÎïÌåÏÖΪѪÐé £¬£¬£¬²¢Ó°ÏìÄýѪÀú³Ì £¬£¬£¬Ëðº¦ÉöÔà¡£¡££¨3£©Ëðº¦ÃâÒß¹¦Ð§ £¬£¬£¬Ò×±§²¡¡£¡£

£¨4£©Ö»û £¬£¬£¬ÖÂÍ»¼°Ö°©×÷Óᣡ£


2¡¢Öж¾ÌåÏÖ

   ËÇÁÏÒýÆðµÄǦÖж¾ £¬£¬£¬¶àΪÂýÐÔÀú³Ì¡£¡£ÌåÏÖΪÏû»¯ÐÔÄÜÔÓÂÒ¼°Éñ¾­×´ £¬£¬£¬ÈçÑáʳ¡¢±ãÃØ»ò±ãÃØÓ븹й½»Ìæ·ºÆð £¬£¬£¬¸¹Í´¡¢ÄýÖÍ¡¢ËÄÖ«ÌÛÍ´¡¢ÏûÊÝ¡¢ÑªÐéµÈ £¬£¬£¬³Ýö¸±ßÑØ¿É¼ûǦÏß¡£¡£


¶þ¡¢ÉéµÄΣº¦


1¡¢Î£º¦

£¨1£©µ¼ÖÂϸ°û´úлÕϰ­ £¬£¬£¬Òý·¢Éñ¾­¹¦Ð§ÔÓÂÒ¡£¡£

£¨2£©µ¼ÖÂѪ¹Ü¹Ü±ÚÉøÍ¸ÐÔ±¬·¢×ª±ä £¬£¬£¬Òý·¢ÔàÆ÷³äѪ £¬£¬£¬µ¼ÖÂÔàÆ÷ÊÜË𡣡£

£¨3£©µ¼ÖÂÇÝÐóÆ·ÖÊϽµ £¬£¬£¬ÑÏÖØÓ°ÏìÇÝÐóÉú²ú¡£¡£


2¡¢Öж¾ÌåÏÖ

   ÉéµÄ¼±ÐÔÖж¾¶àÒòÎóʳÆð £¬£¬£¬ÈôÊÇͨ¹ýËÇÁϺã¾ÃÉÙÁ¿ÉãÈë £¬£¬£¬»áÔÚÌåÄÚÐ¶øÒýÆðÂýÐÔÖж¾ £¬£¬£¬Öж¾Àú³Ì»ºÂý¡¢²»Òײì¾õ¡£¡£Ö÷ÒªÌåÏÖÊÇÉñ¾­ºÍÏû»¯ÐÔÄÜÔÓÂÒ £¬£¬£¬¾«Éñ³ÁÓô £¬£¬£¬Æ¤·ôÍ´¸Ð £¬£¬£¬´¥¾õ¼õÍË £¬£¬£¬ËÄÖ«¼¡ÈâÎÞÁ¦ÓëÂéľ¡¢ÏûÊÝ¡¢Æ¤Ã«´Ö²ÚÎÞ¹âÔó¡¢ÍÑëÍÑÌ㡢ʳÓû²»Õñ¡¢Ïû»¯²»Á¼¡¢¸¹Í´¡¢Ò»Á¬À­Ï¡ £¬£¬£¬Ä¸Ðó²»ÔлòÁ÷²ú¡£¡£


Èý¡¢ïÓµÄΣº¦¼°Öж¾ÌåÏÖ


1¡¢Î£º¦

   ïÓ¿ÉÒÔÐî»ý¡¢ÉøÍ¸ºÜÂý £¬£¬£¬Ëðº¦ÉöС¹Ü¼°ÉöСÇò £¬£¬£¬·ºÆðÂѰ×Äò¡¢ÌÇÄò¡¢¸ÆÁ×Äò £¬£¬£¬´Ó¶ø¹ÇÖÊËÉÉ¢¡¢¹ÇÍ´²¡¡£¡£»£»£»£»£»£»¹ÄÜÒýÆðѪÐé £¬£¬£¬¶Ô¶¯ÎïÉúֳϵͳË𺦺ÜÊǴ󡣡£ïÓ×ÌÈÅZn¡¢Cu¡¢FeµÄÎüÊÕ £¬£¬£¬ïÓ»¹¾ßÓÐÖ°©ÐÔ¡£¡£ïÓ¶Ô¼¦µÄLD50Ϊ165~188 mg/kgÌåÖØ¡£¡£ÔÚµ°¼¦ÈÕÁ¸ÖÐÌí¼Ó30~60mg/kg Cd¿É½µµÍÌåÖØ¡¢²ÉʳÁ¿¡¢ÁÏÈâ±È¡¢²úµ°Á¿¼°µ°¿Çºñ¶È¡£¡£


2¡¢Öж¾ÌåÏÖ

    ѪÐéÊÇïÓÖж¾ÒýÆðµÄÒ»ÖÖÂýÐÔ²¡ £¬£¬£¬¶¯ÎïÒ»Ñùƽ³£ÌåÏÖΪ±»Ã«´Ö²Ú¡¢ÓðëÅîÂÒ¡¢Ã»ÓйâÔó £¬£¬£¬¶¯ÎïʳÓû½µµÍ¡¢¾«ÉñήÃÒ £¬£¬£¬³¤Ê±¼ä¸¹Ðº £¬£¬£¬ÌåÖØ¼õÇá £¬£¬£¬Éú³¤±äÂý £¬£¬£¬µ°¼¦²úµ°Ï½µ £¬£¬£¬µ°ÖرäÇá¡£¡£µ°¿ÇÖÊÁ¿Ï½µ £¬£¬£¬ÖíÔöÖØ±äÂý¡£¡£¶¯ÎïÉú²úˮƽϽµ £¬£¬£¬¿É¼ûճĤ²Ò°× £¬£¬£¬Ò×»¼²¡ £¬£¬£¬²»Ã÷Ôµ¹ÊÔ­ÓÉéæÃü¡£¡£


ËÄ¡¢¸õµÄΣº¦¼°¶¾ÐÔ


1¡¢¶Ô¸ÎÔàµÄ¶¾ÐÔЧӦ

Ðí¶àÑо¿Åú×¢ £¬£¬£¬¸ÎÔàÊǸõ¶¾ÐÔ×÷ÓõÄÖ÷Òª°ÐÆ÷¹Ù¡£¡£½Ó´¥Cr£¨¢ö£©»áÒýÆð¶¯Îï¸ÎÔàËðÉË £¬£¬£¬¸õ½øÈë»úÌåºó»á±»Ê³ÎïÖеĻ¹Ô­ÎïÖÊ»¹Ô­ £¬£¬£¬Î´±»»¹Ô­µÄ¸õ¾­³¦µÀÎüÊÕ½øÈëѪҺ £¬£¬£¬Á÷¾­¸ÎÔàʱ¿É±»¸ÎÔàϵͳÄÚµÄѪҺ»¹Ô­ £¬£¬£¬Ëæºó¸õ½øÈë¸ÎÔà £¬£¬£¬¶Ô¸ÎÔàϸ°û±¬·¢¶¾ÐÔ·´Ó¦¡£¡£


2¡¢¶ÔÉöÔàµÄ¶¾ÐÔЧӦ

ÉöÔàÊǸõ½øÈëÌåÄÚºóµÄÖ÷ÒªÉøÍ¸Æ÷¹Ù £¬£¬£¬ÒÔÊÇ˵¸õ¿ÉÒÔµ¼ÖÂÉöÔàµÄË𺦡£¡£ÓÐÑо¿±¨µÀ £¬£¬£¬½üÇúС¹ÜÊÇÉöÔàµÄÔçÆÚËðÉËÖ÷Òª²¿Î» £¬£¬£¬ËðÉËʱ»áµ¼ÖÂÄòÖÐÂѰ×Á¿Ôö¸ß £¬£¬£¬±¬·¢ÂѰ×Äò £¬£¬£¬ÒýÆðÉö¹¦Ð§¸Ä±ä¡£¡£Ò²ÓÐÑо¿Åú×¢ £¬£¬£¬¸õ»¹¿ÉÒÔͨ¹ýÖÂʹ»úÌåÑõ»¯ËðÉ˺ÍÉúÎïĤËðÉËÀ´±¬·¢ÉöÔà¶¾ÐÔ¡£¡£´ÓÏÖÓеĹØÓÚCr£¨¢ö£©ÉöÔà¶¾×÷ÓûúÖÆ±¨µÀÀ´¿´ £¬£¬£¬ÎÞÂÛÔÚ¶¯ÎïÌåÄÚÕÕ¾ÉÌåÍâʵÑéϵͳÖж¼·¢Ã÷ÁËÉúÎïĤËðÉ˺ÍÑõ»¯ËðÉË £¬£¬£¬ÒÔÊÇÕâºÜ¿ÉÄÜÊÇCr£¨¢ö£©µ¼ÖÂÉöÔàËðÉ˵ÄÖ÷ÒªÔµ¹ÊÔ­ÓÉ¡£¡£


3¡¢¶Ô·ÎÔàµÄ¶¾ÐÔЧӦ

¸õµÄ½Ó´¥Í¾¾¶³ýÏû»¯ÏµÍ³Íâ £¬£¬£¬ºôÎüϵͳҲÊÇÒ»¸öÖ÷Ҫ;¾¶¡£¡£Cr£¨¢ö£©¶Ô·ÎÔà¿ÉÔì³ÉÇ¿ÁҵĺôÎü´Ì¼¤ºÍÇÖÊ´ºôÎüµÀµÈΣº¦ £¬£¬£¬ÓÈÆä×÷ÓÃÓÚ±ÇÇ»ºÍÑʲ¿ £¬£¬£¬¿ÉÒýÆð±ÇÖиô´©¿×ºÍÏø´­µÈ¼²²¡¡£¡£


4¡¢¶ÔÉúÖ³Æ÷¹ÙµÄ¶¾ÐÔЧӦ

ÓÐÑо¿ÏÔʾ £¬£¬£¬´óÊó×÷ΪʵÑ鶯Îï £¬£¬£¬¾­¸¹Ç»Ò»Á¬5d×¢É䏸ÓèÖØ¸õËá¼Øºó £¬£¬£¬ÐÛÐÔ´óÊóغÍè60dºó·ºÆðήËõ £¬£¬£¬¾«×ÓÊýïÔÌ­ £¬£¬£¬´ÆÐÔ´óÊó·ºÆð¸¹ÄÚÅßÌ¥ÑéÖ¤µÄ·¢Óý²»Á¼ºÍÌ¥¶ùÌåÖØ¼õÇá £¬£¬£¬ÉõÖÁÁ÷²ú¡£¡££¨Ernst £¬£¬£¬1990£©Ò²ÓÐÑо¿·¢Ã÷ £¬£¬£¬Èý¼Û¸õÒ²¿ÉÒÔÆÆËðÂÑĸϸ°ûµÄ³ÉÊì²¢ÇÒ½µµÍСÊó³¬ÅÅÂÑÊýºÍÂÑĸϸ°ûµÄ´æ»îÂʼ°ÌåÍâÊܾ«ÂÊ £¬£¬£¬ËµÃ÷Èý¼Û¸õÒ²¾ßÓÐÏÔ×ŵÄÉúÖ³¶¾ÐÔ£¨Shen et al.,1999£©¡£¡£


¡¾ÍøÕ¾µØÍ¼¡¿¡¾sitemap¡¿