Distribution patterns of PCDD/Fs in chlorinated chemicals.
The purpose of this research was to determine polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/F) in five chlorinated chemicals (phthalocyanine copper, phthalocyanine green, chloranil-1 and 2, and triclosan), and to compare their 2,3,7,8-tetrachlordibenzo-IpI-dioxin equivalents (TEQ). The distribution patterns of total PCDD/Fs and 2,3,7,8-substituted PCDD/Fs were elucidated in detail. The TEQ values of toxic PCDD/Fs in all chemicals were in the range of 5.03-1379.55 ng I-TEQ/kg. The contribution of OCDD and OCDF in phthalocyanine green was 75% of the total TEQ. For chloranils, the maximum contribution of toxic PCDD/Fs was from 2,3,7,8-substituted HxCDF and 2,3,7,8-substituted HpCDF. The TEQ of HxCDF and HpCDF in chloranil-1 was 90% and in chloranil-2 was 71%. And the toxic contribution increased with the degree of chlorination for PCDFs.
Ni
Yuwen
Y
Dalian Institute of Chemical Physics, CAS, Dalian 116011, China.
Zhang
Zhiping
Z
Zhang
Qing
Q
Chen
Jiping
J
Wu
Yongning
Y
Liang
Xinmiao
X
D000891:Anti-Infective Agents, Local / Q000737:chemistry; D001572:Benzofurans / Q000032:analysis*; D002681:China; D002703:Chloranil / Q000737:chemistry*; D000072338:Dibenzofurans, Polychlorinated; D004785:Environmental Pollutants / Q000032:analysis; D005659:Fungicides, Industrial / Q000737:chemistry; D007211:Indoles / Q000737:chemistry*; D009942:Organometallic Compounds / Q000737:chemistry*; D010860:Pigments, Biological / Q000737:chemistry; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives* / Q000032:analysis; D018570:Risk Assessment; D014260:Triclosan / Q000737:chemistry*
D000891:Anti-Infective Agents, Local; D001572:Benzofurans; D000072338:Dibenzofurans, Polychlorinated; D004785:Environmental Pollutants; D005659:Fungicides, Industrial; D007211:Indoles; D009942:Organometallic Compounds; D010860:Pigments, Biological; D000072317:Polychlorinated Dibenzodioxins; D002703:Chloranil; C015445:copper phthalocyanine; D014260:Triclosan; C505810:phthalocyanine green