摘要
长江和嘉陵江作为重庆市主城区的饮用水水源,其有机污染物的定性分析尚未见报道。应用固相萃取-GC/MS技术对重庆市主城区饮用水源水有机污染物进行了分析,共检测出101种有机污染物,其中嘉陵江源水64种,长江源水46种。主要污染物包括:邻苯二甲酸酯、酯类、酮类、酚类、杂环和苯及其衍生物等。嘉陵江源水枯水期污染重于丰水期,有机污染物浓度明显高于长江源水;长江源水污染丰水期重于枯水期,并表现出中游污染轻,上游和下游污染重的特点。检出率较高的化合物有:邻苯二甲酸二(2-甲基丙基)酯、邻苯二甲酸二丁酯(100％),1-氯-4硝基-苯(60％),1,1,3,3,3-五氯丙烷(50％),2,6-二特丁基对甲酚(40％);此外,在枯水期B厂水样中检出多种硫代磷酸酯,其单种含量最高达到56.5μg/L。
The organic compounds in the Jialing River and the Yangtze River that are the source of drinking water for Chongqing City have not been found previously. The Solid Phase Extraction-GC/MS method was employed in this study. 100 or more organic compounds were identified in source water, 60 in the Jialing River and 50 in the Yangtze River, the most of which are phthalic acid, esters, keton, phenol, benzene and derivatives. The organic contamination character was different in the source water of the Jialing River and the Yangtze River. Organic contamination levels in Jialing River were much higher than in Yangtze River, and in spring were much higher than in summer in Jialing River, and vice verse in the Yangtze River. The compounds of higher rates detected were di-iso-butyl-phthalate( 100%), di-butyl-phthalate(100%),chloro-4-nitro-benzene(60%), 1,1,3,3,3-pentachloropropane (50%), butylated hydroxytoluene (40%). In addition, many metabolites on intermediate of methamidophos pesticide were detected in B water treatment, with the highest concentration of a single being 56.5μg/L.
出处
《长江流域资源与环境》
CAS
CSSCI
CSCD
北大核心
2003年第2期118-123,共6页
Resources and Environment in the Yangtze Basin
基金
国家教育部98‘春晖计划项目(编号1999-36)
重庆市科技攻关项目(编号1999-5772)
国家自然科学基金重点项目(编号59838300)资助
关键词
水源水
有机污染物
长江
嘉陵江
source water
organic pollutants
Yangtze River
Jialing River
