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首页> 外文期刊>Environmental toxicology and chemistry >Effect Of Triclosan On Microbial Activity In Australian Soils
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Effect Of Triclosan On Microbial Activity In Australian Soils

机译：三氯生对澳大利亚土壤微生物活性的影响

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Triclosan (TCS) antimicrobial compound is used in personal care products such as shampoos and soaps. The TCS compound can survive the treatment process and is often present in the sewage effluent and biosolids. We investigated the impact of TCS upon selected microbiological and biochemical parameters in two contrasting Australian soils. Substrate-induced respiration and nitrification, plus activities of four enzymes (relevant for carbon and nitrogen turnover), were measured using Organisation for Economic Co-operation and Development protocols after exposing soils to TCS at concentrations of 0, 1,5, 10. 50, and 100 mg/ kg of soil. Respiration in the sandy soil was not affected by the addition of TCS, but in clay soil it decreased to TCS at 50 mg/ kg of soil. The nitrification process was affected in both soils. In the sandy soil, TCS showed a negative effect on the nitrate and nitrite production at 5 mg/kg. In contrast, in the clay soil, the effect was noticeable only at concentrations greater than 50 mg/kg. The response of four enzymes (acid and alkali phosphatase, β-glucosidase, and chitinase) in the two soils was variable, and only β-giucosidase showed some response to TCS addition. The study demonstrated that TCS at concentrations below 10 mg/kg can disturb the nitrogen cycle in some soils. A first-tier hazard assessment highlighted the need for further work on TCS impact on soil microorganisms.
机译：三氯生（TCS）抗菌化合物用于个人护理产品，如洗发水和肥皂。 TCS化合物可以在处理过程中幸存下来，并且经常存在于污水和生物固体中。我们调查了两种不同的澳大利亚土壤中TCS对选定的微生物和生化参数的影响。在将土壤暴露于浓度为0、1.5、10、10的TCS中后，使用经济合作与发展组织的协议测量了基质诱导的呼吸和硝化作用以及四种酶的活性（与碳和氮的转化相关）。和100 mg / kg土壤。沙土中的呼吸作用不受TCS的影响，但在黏土中，以50 mg / kg的土壤呼吸速率下降为TCS。两种土壤的硝化过程均受到影响。在沙质土壤中，TCS对5 mg / kg的硝酸盐和亚硝酸盐产生负面影响。相反，在粘土中，仅在浓度大于50 mg / kg时，效果才明显。在两种土壤中，四种酶（酸和碱性磷酸酶，β-葡萄糖苷酶和几丁质酶）的响应是可变的，只有β-糖苷酶对TCS的添加有一定的响应。研究表明，低于10 mg / kg的TCS可能会扰乱某些土壤的氮循环。一级危害评估强调，需要进一步研究TCS对土壤微生物的影响。

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