CAJ | 학술논문

有机氯农药（OCPs）是一类重要的持久性有机污染物（POPs），具有半挥发性、持久性和高毒性，并能通过食物链富集，危害生态系统和人体健康。有机氯农药可以在不同的环境介质间迁移，并能在大气环境中进行远程输送，导致大范围乃至全球性的环境污染。最近的研究发现太湖地区的有机氯农药含量仍然非常高，为了了解太湖有机氯农药的来源以及环境行为，采用气相色谱质谱法对太湖竺山湾水体和沉积物样品中有机氯农药（OCPs）含量进行了测定，探讨了太湖水体和沉积物中有机氯农药的可能来源以及水体-沉积物之间的交换通量。研究结果表明：沉积物样品中的六氯苯的含量最高，为2.33 ng·g-1（干质量，下同），其次为p,p’-DDT、p,p’-DDE和β-HCH，含量分别为0.67、0.64和0.37 ng·g-1。从水体中OCPs的组成来看，p,p’-DDT的含量最高为426.26 pg·L-1，其次是α-HCH和硫丹Ⅰ，含量分别为289.99和215.20 pg·L-1。采用α-HCH/γ-HCH比值对HCHs的来源进行分析，发现太湖水体中的γ-HCH污染来源于工业品六六六和林丹的使用，由交换模型得出HCHs的净交换通量为释放通量，表明HCHs的迁移方向是由沉积物到水中，沉积物的释放已成为太湖水体中HCHs的主要来源之一。水体中的p,p’-DDT/p,p’-DDE比值远大于1，而且由交换模型得出p,p’-DDT的净交换通量为沉降通量，说明了近期可能有新的污染源的输入。值得注意的是，硫丹Ⅰ的净交换通量同样为沉降通量，反映出太湖水体中硫丹Ⅰ可能存在新源的输入。
유궤록농약（OCPs）시일류중요적지구성유궤오염물（POPs），구유반휘발성、지구성화고독성，병능통과식물련부집，위해생태계통화인체건강。유궤록농약가이재불동적배경개질간천이，병능재대기배경중진행원정수송，도치대범위내지전구성적배경오염。최근적연구발현태호지구적유궤록농약함량잉연비상고，위료료해태호유궤록농약적래원이급배경행위，채용기상색보질보법대태호축산만수체화침적물양품중유궤록농약（OCPs）함량진행료측정，탐토료태호수체화침적물중유궤록농약적가능래원이급수체-침적물지간적교환통량。연구결과표명：침적물양품중적륙록분적함량최고，위2.33 ng·g-1（간질량，하동），기차위p,p’-DDT、p,p’-DDE화β-HCH，함량분별위0.67、0.64화0.37 ng·g-1。종수체중OCPs적조성래간，p,p’-DDT적함량최고위426.26 pg·L-1，기차시α-HCH화류단Ⅰ，함량분별위289.99화215.20 pg·L-1。채용α-HCH/γ-HCH비치대HCHs적래원진행분석，발현태호수체중적γ-HCH오염래원우공업품륙륙륙화림단적사용，유교환모형득출HCHs적정교환통량위석방통량，표명HCHs적천이방향시유침적물도수중，침적물적석방이성위태호수체중HCHs적주요래원지일。수체중적p,p’-DDT/p,p’-DDE비치원대우1，이차유교환모형득출p,p’-DDT적정교환통량위침강통량，설명료근기가능유신적오염원적수입。치득주의적시，류단Ⅰ적정교환통량동양위침강통량，반영출태호수체중류단Ⅰ가능존재신원적수입。
Organochlorine pesticides (OCPs) are important persistent organic pollutants (POPs), Because of their half-volatility, persistence, and high toxicity in the environment and biological accumulation through the food web, OCPs have done great harm to the environment and human health. OCPs are able to migrate between the different environmental media, proceed to long-range transport in the air, and lead to global environmental problems. High level of OCPs in the Taihu Lake Region was reported by the latest research. In order to understand the sources and the environmental behaviors of these OCPs in the Taihu Lake, the contents of OCPs in both water and sediment samples from Zhushan Bay of Taihu Lake were determined by GC-MS. The potential sources and water-sediment exchange flux of OCPs was discussed. The results indicated that HCB were the most dominant compounds in the sediment, and the content was 2.33 ng·g-1 (DW). Relative higher contents of OCPs werep,p’-DDT,p,p’-DDE andβ-HCH, the contents were 0.67 ng·g-1, 0.64 ng·g-1 and 0.37 ng·g-1, respectively. It can be seen from the OCPs in Taihu Lake water samples, the highest content ofp,p’-DDT was 426.26 pg·L-1, followed byα-HCH and endosulfan which contents were 289.99 pg·L-1 and 215.20 pg·L-1. According to ratio ofα-HCH/γ-HCH and HCHs source analysis, it can be found that HCHs pollution in Taihu Lake came from the use of industrial HCHs and lindane. The net exchange flux of HCHs were release fluxes, indicating the tendency to transfer these contaminants from sediment to water. This implies that the residue of HCHs in the lake sediment might have been an important source of HCHs to the water. The ratio ofp,p’-DDT/p,p’-DDE in water bodies is much larger than 1, and the net exchange flux of p,p’-DDT were deposition fluxes, indicating the new sources of input. It is notable that the fluxes for endosulfan I also followed the same pattern asp,p’-DDT, reflecting there were probably new sources to the Taihu Lake.