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首页> 外文期刊>Water, Air, and Soil Pollution >ACCELERATED DEGRADATION OF METHYL ISOTHIOCYANATE IN SOIL
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ACCELERATED DEGRADATION OF METHYL ISOTHIOCYANATE IN SOIL

机译：土壤中异硫氰酸甲酯的快速降解

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摘要

Methyl isothiocyanate (MITC, CH_3NCS) is the primary breakdown product of metam-sodium, and a potential replacement fumigant pesticide for methyl bromide. Methyl isothiocyanate is toxic and has a high potential for volatilization, therefore, minimizing its atmospheric emission is of the utmost importance. One method to reduce fumigant emissions is to enhance their degradation by incorporating organic amendments into the soil surface. In this study we determined the combined effect of temperature and chicken manure application rate on the degradation of MITC. The degradation of MITC was significantly accelerated by both increasing temperature and amendment rate. Differences between sterile and nonsterile degradation kinetics in unamended and organically amended soil indicate that MITC degradation is equally controlled by chemical and biological processes. The amelioration of soil with organic amendments should be further considered when designing fumigation practices that allow for reduced emissions.
机译：异硫氰酸甲酯（MITC，CH_3NCS）是间位钠的主要分解产物，是甲基溴的潜在替代熏蒸剂。异硫氰酸甲酯有毒，极有可能挥发，因此，最大程度地减少其大气排放至关重要。减少熏蒸剂排放的一种方法是通过将有机改良剂掺入土壤表面来提高其降解程度。在这项研究中，我们确定了温度和鸡粪施用量对MITC降解的综合影响。温度和改性率的提高均显着加速了MITC的降解。在未改良土壤和有机改良土壤中，无菌和非无菌降解动力学之间的差异表明，MITC降解受化学和生物过程的控制相同。在设计允许减少排放的熏蒸方法时，应进一步考虑用有机改良剂改善土壤。

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