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首页> 外文期刊>Environmental toxicology and chemistry >FATE OF TRICLOSAN AND TRICLOCARBAN IN SOIL COLUMNS WITH AND WITHOUT BIOSOLIDS SURFACE APPLICATION
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FATE OF TRICLOSAN AND TRICLOCARBAN IN SOIL COLUMNS WITH AND WITHOUT BIOSOLIDS SURFACE APPLICATION

机译：施用和不施用表面生物素的土壤柱中三氯乙烯和三碳碳的命运

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The leaching and transformation behaviors of triclosan (TCS) and triclocarban (TCC) in soil columns (20 cm high, 4 cm in diameter) packed with ah agricultural soil (Roxana very fine sandy loam) with and without biosolids surface application were investigated. The column leachates and soil samples were analyzed for TCS, TCC, and their transformation products. Significantly more TCS was transformed compared with TCC. Surface application of biosolids significantly retarded their transformation. Downward movement of TCS and TCC occurred within a 10-cm soil depth. Methyl-TCS was not detectable in the leachates but was detected in the top 5-cm soil layer, with more appearing in the biosolids-applied soil. At the end of the column study, carbanilide (CBA) was the only detectable TCC reductive dechlorination product in the soil. No TCC reductive dechlorination products were detectable in the leachates. Detection of 3,4-dichloroaniline (3,4-DCA) and 4-chloroaniline (4-CA) suggested the occurrence of TCC hydrolysis. Rapid leaching of 4-CA through the noil column was observed. The 3,4-DCA was detected throughout the entire 20-cm depth of the soil column but not in the leachates. The fact that only small percentages of the transformed TCS and TCC appeared, after a 101-d column study, in the forms of the products analyzed suggested that either the investigated transformation pathways were minor pathways or further rapid transformation of those products had occurred. Environ.
机译：研究了三氯生（TCS）和三氯卡班（TCC）在装有和不带有生物固体表面的一种农业土壤（Roxana细砂壤土）填充的土壤柱（高20 cm，直径4 cm）中的淋溶和转化行为。分析了柱渗滤液和土壤样品的TCS，TCC及其转化产物。与TCC相比，TCS的转化量明显更多。生物固体的表面施用显着阻碍了它们的转化。 TCS和TCC的向下运动发生在10厘米的土壤深度内。在渗滤液中未检测到甲基-TCS，但在5 cm土层中检测到了甲基-TCS，在使用生物固体的土壤中出现了更多。在本专栏研究结束时，尿素（CBA）是土壤中唯一可检测到的TCC还原性脱氯产物。在渗滤液中未检测到TCC还原性脱氯产物。检测3,4-二氯苯胺（3,4-DCA）和4-氯苯胺（4-CA）表明发生了TCC水解。观察到4-CA通过精馏塔的快速浸出。在土壤柱的整个20厘米深度处都检测到3,4-DCA，但在渗滤液中未检测到。在101天的色谱柱研究后，只有少量转化的TCS和TCC以所分析产物的形式出现的事实表明，所研究的转化途径为次要途径，或者这些产物发生了进一步的快速转化。环境。

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