摘要
分别采用振荡平衡法、土壤薄层层析法和土柱淋溶法研究了甲萘威在不同土壤中的吸附和淋溶特性。结果表明,甲萘威在红土、黄土、水稻土、黑土4种土壤中的吸附和淋溶性均存在差异。土壤吸附常数K d值分别为0.127、0.381、9.652、15.54,吸附能力强弱顺序为黑土>水稻土>黄土>红土。甲萘威在红土中属于易淋溶、可移动,在黄土中属于可淋溶、中等移动,在水稻土和黑土中属于难淋溶、不易移动。影响甲萘威在土壤中吸附和淋溶的主要因素是土壤有机质含量,土壤有机质含量越高,对甲萘威的吸附性越强,淋溶性越弱。
The adsorption and leaching of carbaryl in different soils in China were studied by oscillation equilibrium experiment, soil TLC and column leaching. Results showed the characters of carbaryl in the red soil, yellow soil, paddy soil and black soil were different, with adsorption coefficients Ka of these 4 kinds of soil as 0.127, 0.381, 9.652, 15.54, indicating that the adsorption capacity was ranked from strong to weak as black soil, paddy soil, yellow soil, red soil. Carbaryl showed high leaching and mobility degree in red soil, medium leaching and mobility degree in yellow soil, and comparatively low leaching and mobility degree in paddy soil and black soil. Organic matter content played main influence on the adsorption and leaching capacity of carbaryl in the soils, the higher the soil＇s organic matter content, the stronger the adsorption and weaker the leaching.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2013年第9期96-99,共4页
Environmental Science & Technology
关键词
甲萘威
吸附
淋溶
carbaryl
adsorption
leaching
