“Shorthand” numbering of chlorinated dibenzodioxins (CDD) and dibenzofurans (CDF) |
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| Authors: | V Zitko |
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| Institution: | Fisheries and Environmental Sciences Department of Fisheries and Oceans Biological Station, St. Andrews, New Brunswick, EOG 2X0 Canada |
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| Abstract: | Numbers in base 16 (Hex) are used for an abbreviated designation of chlorine substitution in CDD and CDF. This “shorthand” requires two hexadecimal digits. A letter (“d” or “f”) may be used to distinguish between CDD and CDF. The digits describe the substitution patterns in positions 6,7,8,9, and 4,3,2,1, assigned values of 8,4,2, and 1, respectively. For example, 66d = 2,3,7,8-tetrachlorodibenzo-p-dioxin. |
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