DDTS

DDTs and HCHs serum level were detected by EC-ECD .

运用GC -ECD 方法检测血清中有机氯农药DDTs和HCHs水平.

The residual levels of DDTs, HCHs in soil were different with different utilization types.

土壤中DDTs 、 HCHs残留在不同土壤利用方式下有所不同.

DDTs was the primary compound in soil samples, accounting for 98.9% of the pesticides POPs. The source of DDTs was garden soils in city parks.

其中滴滴涕占总有机氯农药类POPs物质的98.9%，是北京地区土壤中残留有机氯农药类POPs物质的主要成分，城市公园、园林土壤是城市滴滴涕的主要污染源。

TheHCHs and DDTs in the Liao River originate mainly from the use of pesticides inagriculture.

六六六和滴滴涕是主要污染物,它们主要来源于农药的使用.

The � �-HCH and p, p-DDE were the characteristic residues isomerof HCHs and DDTs in yogurt, respectively.

其中β -HCH 和p, p-DDE分别是HCHs和DDTs的特征残留单体.

In DDTs the residual level of p, p?

DDTs中p, p?

DDTs and BHCs in surface waters did not exceed the standard of surface water environment quality.

表层水体中DDTs和BHCs均未超过地表水环境质量标准；

DDTs Transport Between Sediment and Water in the Mainstream of Haihe River in the Urban Area

DDTs在海河干流市区段沉积物/水间迁移行为研究

DDT is one of the first control POPs mentioned in Stockholm Convention. The large scale contaminated sites formed due to the production of DDT pesticides in the past. The high concentration DDTs should be removed as soon as possible, to prevent the hazards caused by them.

滴滴涕（DDT）是斯德哥尔摩公约中首批控制的12种POPs之一，由于过去大规模的生产造成了大面积的污染场地，残留有高浓度的DDTs其修复问题亟待解决。

The distributions of DDTs and PCBs is very similiar, but HCHs is different.

DDTs和PCBs有极为相似的分布特征, 而HCHs的 分布特征则不尽相同.

Content and changing character of HCHs and DDTs in water of estuaries in Jiaozhou Bay

胶州湾河流入海口水中HCHs、DDTs含量水平及变化特征

Sino Thai Relations: Ever increasingly Close In DDTs the residual level of p, p?

日益密切的中泰关系DDTs中p，p？

The concentrations of HCHs , DDTs and PCBs were determined by gas chromatography ( GC ).

HCHs 、 DDTs及PCBs含量用GC法测定.

Organic chlorinated pesticide such as DDTs is one kind of typical global environmental pollutant.

有机氯农药DDTs是全球性环境污染物,对生态环境有严重影响.