摘要
2011年6月至2012年5月在深圳河沿程采集水样,采用固相萃取—氮吹—衍生化的预处理方法和气相色谱/质谱联用法,对壬基酚(NP)、辛基酚(OP)、双酚A(BPA)、雌酮(E1)、雌二醇(E2)、17α-雌二醇(17α-E2)、雌三醇(E3)、雌炔醇(EE2)等8种内分泌干扰物(EDCs)在深圳河的浓度分布和时空变化规律进行了研究。同时通过主成分分析考察了EDCs与常规水质污染物的关系。结果表明,NP、BPA、E1、E3、EE2在深圳河各河段均有检出,而OP、17α-E2、E2的检出率均低于20%,EDCs主要来源是NP和BPA;深圳河旱季和雨季EDCs的浓度变化大,其中NP浓度表现出旱季高雨季低的规律,旱季浓度是雨季的1.74～5.63倍,但BPA和3种甾醇类雌激素的浓度呈现出了雨季高旱季低的相反变化规律,这应该与污水处理厂雨季污水溢流有关;通过主成分分析发现,BPA与DO存在明显的负相关关系,生物作用可能在BPA去除和甾醇类雌激素转化中起到了重要作用,具体机制还有待进一步研究。
Water samples along the Shenzhen River were collected from June 2011 to June 2012 to investigate the spatial and temporal distribution of endocrine disrupting chemicals （EDCs） in Shenzhen River. Solid phase extrac tion and GC-MS analysis was applied to determine the content of 8 EDCs in water samples, they were nonyphenols （NP）, octylphenol fOP）, bisphenol A （BPA）, estrone （El）, estrodiol （E2）, 17a-estrodiol （17a-E2）, estriol （E3） and ethinylestradiol fEE2）. The correlations between EDCs and conventional water quality index were studied base on the principal component analysis （PCA）. Results showed that NP, BPA, El, E3, EE2 were detected in all section of Shenzhen River while the detection rate of other 3 EDCs fOP, 17a-E2 and E2） were less than 20%. The main com ponents of EDCs were NP and BPA. The seasonal variation of EDCs was significant in Shenzhen River, NP was high er in dry season than in rainy season with NP fluctuation in two seasons ranged l. 74-5.63 times, while BPA and 3 sterol-type estrogen present different change rule, which might be related to the overflow of waste water from sewer system. Principal component analysis showed that BPA were significantly correlated with DO, suggesting that bio degradation might play an important role in BPA degradation and estrogen conversion.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2013年第9期9-13,18,共6页
Environmental Pollution & Control
基金
水利部公益性行业专项(No.201201033)
关键词
内分泌干扰物
雌激素
壬基酚
双酚A
endocrine disrupting chemicals estrogen nonyphenol bisphenol A
