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Journal Article 
Preliminary investigation on 13 endocrine disrupting chemicals in the Songhua river 
Shao, X; Ma, J 
Huanjing Kexue Xuebao / Acta Scientiae Circumstantiae
ISSN: 0253-2468 
Solid phase extn./high performance liq. chromatog. was used for simultaneous detn. of 13 representative endocrine disrupting chems. (EDCs) in Songhua River water. It was obsd. that the concns. of 5 estrogens: estriol (E3), 17?-estradiol (E2), estrone (E1), 17?-ethynylestradiol (EE2) and diethylstilbestrol (DES) were rather high over the Harbin reaches of the river, with the max. content reaching 66 ng/L-1. Di-Me phthalate (DMP), di-Et phthalate (DEP), di-Bu phthalate (DnBP) and di-(2-ethylhexyl) phthalate (DEHP) were more abundant than other EDCs, and DnBP had the highest concn. at 330 ?g/L-1. Contents of 3 alkylphenols: 4-n-nonylphenol (4-n-NP), branched p-nonylphenol (NP) and 4-tert-octylphenol (4-t-OP) were in the range of 25-1261 ng/L-1. The concns. of bisphenol A (BPA) were relatively stable, in the range of 20-50 ng/L-1. In comparison to the concns. of EDCs reported in the literature, these results demonstrate that the pollution of estrogens and phthalic acid esters (PAEs) is serious and needs special attention. 
Endocrine disrupting chemicals(EDCs); High performance liquid chromatography(HPLC); Solid phase extraction(SPE); Songhua River