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Sludge Amendment Affect the Persistence, Carbon Mineralization and Enzyme Activity of Atrazine and Bifenthrin.
Bulletin of Environmental Contamination and Toxicology ( IF 2.7 ) Pub Date : 2020-06-24 , DOI: 10.1007/s00128-020-02917-7
Irani Mukherjee 1 , Shaon Kumar Das 2 , Aman Kumar 1 , Livleen Shukla 3
Affiliation  

Atrazine and bifenthrin persistence study was carried out in three sludge amended soil under laboratory condition. Atrazine persisted shorter in sludge amended soil sludge-3 (half-life 23.4 days) followed by sludge-2 (half-life 30.1 days) and sludge-1 (half-life 37.1 days) than unamended control (half-life 150.5 days). Bifenthrin followed the similar pattern with sludge-3 (half-life 43.1 days) which increased to 50.3, 60.2 and 75.2 days, respectively in sludge-2, sludge-1 and unamended control representing an immense influence of sludges on degradation. Duncan’s Multiple Range Test revealed that carbon mineralization process was significantly influenced by all the sludges (p < 0.0001). Sludge-3 indicated highest Cmin (initial 118.16 to final 133.64 mg CO2–C/kg) in bifenthrin and 129.91 mg CO2–C/kg in atrazine. The relatively high Cmin rate in sludge amended soil than unamended control suggested a lower persistency of both the pesticides and thus decreasing its potential ecological risk. Sludge-3 sludge amended soil increased the dehydrogenase enzyme activity as compared to sludge-1 and sludge-2 sludge in atrazine.

中文翻译:

污泥修正影响fect去津和联苯菊酯的持久性,碳矿化和酶活性。

在实验室条件下,在三种污泥改良土壤中进行了r去津和联苯菊酯的持久性研究。与未改良的对照(半衰期150.5天)相比,阿特拉津在污泥改良后的土壤污泥3(半衰期23.4天),其次是污泥2(半衰期30.1天)和污泥1(半衰期37.1天)中持续时间短。 。联苯菊酯的污泥3(半衰期43.1天)遵循类似的模式,在污泥2,污泥1和未修正的对照中分别增加到50.3、60.2和75.2天,代表了污泥对降解的巨大影响。邓肯的多范围试验表明,碳的矿化过程受到所有污泥的显着影响(p <0.0001)。污泥3指示最高C min(初始118.16至最终133.64 mg CO 2联苯菊酯中的–C / kg)和阿特拉津中的129.91 mg CO 2 –C / kg。污泥改良土壤中的C min速率高于未改良对照,表明这两种农药的持久性较低,因此降低了其潜在的生态风险。与阿特拉津的污泥1和污泥2污泥相比,污泥3污泥改良土壤增加了脱氢酶活性。
更新日期:2020-06-24
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