DDT和六六六(BHC)一类有机氯农药脂溶性强且不易分解,因而具有残效长、易在生物有机体内累积的特点。随着近代工业的高度发展和农业生产的需要,这类农药的踪迹已遍布地理环境的每一个角落。因此,研究 DDT 和 BHC 在地理环境中的迁移、转化过程和残留累积规律,对有效地控制利用这类有机氯农药和保护环境具有很重要的意义。
The present article is the result of the investigation in the lower reaches ofthe Jiyun River,which flows through the industrial area that produces organo-chlorine insecticides,and primarily discusses the problem about the distribution,transportation and transformation of DDT and BHC in the lower reaches.According to the result fo the investigation,we hold that:(1) Primarycause for DDT and BHC pollution in local occurrence is the discharge of the pe-sticide factory;(2) Remain ratio of DDT is ten times higher than BHC undersame condition;(3) According to calculation,it shows that DDT is the moststable accumulation pollutant in water body,and yet there is still 35% DDT that maybe transformed into DDD or DDE in the sediment.As far as β-BHC is the moststable BHC isomer in water body,and α-BHC is the easisest to be degradated.
[1] Edwards.C.A.Ed: Environmental pollution by pesticides.plenum press. London and New York.1973
[2] 川原哲诚.有机盐素杀虫剂の残效と环境内循环,《遗传》第27卷第五期,1973
[3] Pionke.H.B,Chesters.G,杀虫荆-沉积物-水的相互作用,《地理环境污染与保护译文集》科学技术文欲出版社,1977
[4] Spencer.W.F,Farmer.W.7,CIiath.M.M,Pesticide valatilization in Gunther. F. A. Ed: Residue reviews.vo1.49 Springer-Yerlsy.New.Youk.1973
[5] Hague.R,Freed.Y.H: Behavior of pesticides is the environment. “Environmental Chemodynamics” in Gunther.F.A.Ed: Residue Reviews.vol.52.New York. 1974
[6] 张甬元等:水环境中六六六的转化和归趋,《环境科学学报》第1卷第8期,1981
[7] Sethunathan.N} Microbial degradation of insecticides in flooded soil and in anaerohic enltares. in Gunther.F.A.Ed,Residue Reviews.vol.47 Spriager-Yerlay.New York.1973
[8] Newland.L. W,Gordon Chesters,Gerhard.B.L} Degradation of BHC in simulated lake impoundments as affectedby aeratioa.lournal WPCF.vo1.41 No.5 part 2, 1969
