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However, the compositions of sewage and sludge samples are more complex than those of samples above because of high content of organic matter. Hence, there is a need for suitable sample pretreatment schemes, which is in good agreement with those for determination of total As by HG-AFS methods. On the other hand, the procedure aiming at the optimization of complete sample digestion leading to reliable and rapid methods without loss of analyte should be considered. Till now there were no relevant reports on the determinations of total As in sewage and sludge samples by using the same method of complete digestion. ´óÖÂÒâ˼ÊÇ£ºÈ»¶ø£¬ÎÛË®¡¢ÎÛÄàÑùÆ·ÖÐÓÉÓÚº¬ÓиßŨ¶ÈÓлúÖÊ£¬±ÈǰÊöÑùÆ·³É·Ö¸ü¼Ó¸´ÔÓ£¬Òò´Ë£¬ÐèÒª²ÉÓÃÒ»¸öºÏÊʵÄÑùƷǰ´¦Àí·½·¨ÒÔÈ·±£¿ÉÒÔ²ÉÓÃHG-AFS·½·¨²â¶¨ÆäÖÐ×ÜÉé¡£´ËÍ⣬»¹Ð迼ÂÇÓÅ»¯µÄ¡¢ÍêÉÆµÄÑùÆ·Ô¤´¦Àí·½·¨µÄ¿ìËÙ¡¢¿É¿¿ºÍµÍËðʧ¡£½ØÖÁĿǰ£¬»¹Î´¼û²ÉÓÃͬһÏû½â·½·¨¶ÔÎÛË®¡¢ÎÛÄàÖÐTAs½øÐвⶨ¡£ |
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sltmac(½ð±Ò+1): лл½»Á÷~ 2011-08-08 11:51:29
qhd511(½ð±Ò+10, ·ÒëEPI+1): ¸Ðл°æÖ÷µÄ¼°Ê±°ïÖú¡£ 2011-08-08 12:30:39
sltmac(½ð±Ò+1): лл½»Á÷~ 2011-08-08 11:51:29
qhd511(½ð±Ò+10, ·ÒëEPI+1): ¸Ðл°æÖ÷µÄ¼°Ê±°ïÖú¡£ 2011-08-08 12:30:39
| However, the compositions of sewage and sludge samples are more complicated than those of the former samples due to the high concentration organic matters.Thus,an appropriate pretreatment scheme is needed to ensure that HG-AFS method can be applied to determine the total arsenic. In addition, the speediness, reliablity and low loss of the optimized and perfect sample pretreatment method should be considered. Up to now, there have been no relevant reports on the determinations of total As in sewage and sludge samples by using the same method of complete digestion. |
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