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| The effect of initial density on the removal of dichlorvos was shown in Fig.5. When the initial density of dichlorvos is increased, the removal efficiency decreased. This may be due to the hydroxyl radical scavengers CO32-, HCO3- generated in the reaction. The removal efficiency decreased from20% to 80% when the initial density of dichlorvos increased from 2 to10 μg•cm-1 which the spraying density is 1 μg•cm-1. But the removal efficiency decreased from 90% to 39.16% when the initial density of dichlorvos increased from 2 to10 μg•cm-1 which the spraying density is 2 μg•cm-1.This may be large amount of intermediates may be formed with high initial density of dichlorvos, which can consume •OH in turn, resulting in the deficiency of hydroxyl radicals. Therefore, as the density of parent compounds increased, the removal efficiency of dichlorvos decreased. |
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yxl1218(金币+1,VIP+0): 8-28 20:04
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| The effect of initial density on the removal of dichlorvos was is shown in Fig.空格5. When the initial density of dichlorvos is increased, the removal efficiency decreased. The removal efficiency decreases as the initial density of dichlorvos increases. This may be due to the hydroxyl radical scavengers CO32-, HCO3- generated in the reaction. The removal efficiency decreased decreases from空格20% to 80% when the initial density of dichlorvos increased increases from 2 to10 μg•cm-1 which where the spraying density is 1 μg•cm-1. But the removal efficiency decreased decreases from 90% to 39.16% when the initial density of dichlorvos increased increases from 2 to10 μg•cm-1 which where the spraying density is 2 μg•cm-1.This may be because of the large amount of intermediates may be 去掉may be formed with high initial density of dichlorvos, which can 去掉can consume •OH in turn in turn改consequently, resulting in the deficiency of hydroxyl radicals. Therefore, as the density of parent compounds increased increases, the removal efficiency of dichlorvos decreased increases. |
2楼2009-08-28 18:17:50
4楼2009-08-29 09:35:19
5楼2009-08-30 15:03:38