CAJ | 학술논문

目的研究模拟池塘水生态系统中阿散酸在水体与底泥中的降解规律及对水生态功能的影响．方法设立空白猪粪添加50、150和500 mg／L阿散酸的试验池，采集不同时间池中水及2 cm深处底泥样品，采用HPLC法测定阿散酸质量浓度，HG-AFS法测定总砷含量．结果和结论阿散酸在水体和底泥中的降解时间随药物质量浓度的增大而延长，降解半衰期分别为3.73～16.04和35.17～61.27 d，而总砷在底泥中呈现由浅入深的沉降趋势且消减缓慢．各生态池用药后对其溶解氧（DO）、pH和初级生产力（P／R）、底泥碱性磷酸酶、过氧化氢酶以及全氮和全磷含量等指标进行定期检测．结果表明：阿散酸质量浓度≥150 mg／L对水生态系统可造成不可逆转的影响，高质量浓度阿散酸对过氧化氢酶活性产生明显的抑制作用，底泥全氮含量呈现“抑制－促进”变化过程，各质量浓度下全磷含量均出现下降且呈现浓度依赖性关系．
목적연구모의지당수생태계통중아산산재수체여저니중적강해규률급대수생태공능적영향．방법설립공백저분첨가50、150화500 mg／L아산산적시험지，채집불동시간지중수급2 cm심처저니양품，채용HPLC법측정아산산질량농도，HG-AFS법측정총신함량．결과화결론아산산재수체화저니중적강해시간수약물질량농도적증대이연장，강해반쇠기분별위3.73～16.04화35.17～61.27 d，이총신재저니중정현유천입심적침강추세차소감완만．각생태지용약후대기용해양（DO）、pH화초급생산력（P／R）、저니감성린산매、과양화경매이급전담화전린함량등지표진행정기검측．결과표명：아산산질량농도≥150 mg／L대수생태계통가조성불가역전적영향，고질량농도아산산대과양화경매활성산생명현적억제작용，저니전담함량정현“억제－촉진”변화과정，각질량농도하전린함량균출현하강차정현농도의뢰성관계．
[Objective]In this paper , by simulating the pond water ecosystem , degradation rule in water and sediment and the impact on aquatic ecosystem of arsanilic acid were studied .[Method] Four mini-aquatic pond ecosystems were established;the control was added 100 g pig manure and treated with dif-ferent mass concentrations of 50, 150 and 500 mg/L of arsanilic acid.Samples of water and 2 cm-depth-sediment were taken .Arsanilic acid was determined by HPLC and the total arsenic contents were deter-mined by HG-AFS.[Result and conclusion] The half-life of arsanilic acid increased with the extension of the delivery drug concentration in pond water and surface sediment , which was 3.73 to 16.04 d and 35.17 to 61.27 d, respectively , and the total arsenic showed a distinguished subsidence trend in sedi-ment and degraded slowly.The values of dissolved oxygen(DO), pH, primary productivity(P/R), ac-tivities of sediment alkaline phosphatase and catalase , and the content of total nitrogen and phosphorus indicators were regularly detected .The results showed that 500 , and 150 mg/L arsanilic acid could cause irreversibly detectable effects on the ponds .High mass concentration of arsanilic acid obviously inhibited catalase activities.The total nitrogen content of sediment showed an inhibition-promotion-change process , and all mass concentrations of the total phosphorus content declined and presented a concentration depend -ent relationship .