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DEPURATION KINETICS OF HEXACHLOROBENZENE IN THE CLAM, MACOMA NASUTA
Citation:
Boese, B., M. Winsor, H. II, D. Specht, AND K. Rukavina. DEPURATION KINETICS OF HEXACHLOROBENZENE IN THE CLAM, MACOMA NASUTA. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-90/436 (NTIS PB91177170).
Description:
Hexachlorobenzene (HCB) is a persistent environmental pollutant that bioaccumulates in tissues of marine and fresh water fish (Young and Heesen, 1978; Niimi, 1979; Tsui and McCart, 1981). nce taken up by these tissues, biodegradation is very slow with pentachlorophenol (Sanborn et al., 1977) and polar conjugates (Metcalf et al., 1973) as possible metabolites in aquatic organisms. umerous studies have been done on HCB uptake and depuration in fish (Sanborn et al., 1977; Veith et al., 1979; Kosian et al., 1981; Niimi and Cho, 1981; Oliver and Niimi, 1983). n these studies the HCB bioconcentration factors (BCFs) varied from 5,000 to 40,000 (wet weight basis) with half-lives (t 1/2) from a few days to several years. lthough several studies have examined HCB uptake in invertebrates (Boese et al., 1988; Ekelund et al., 1987; Oliver, 1987; Knezovich and Harrison, 1988)< only Oliver's (1987) study estimates a BCF. liver (1987) found that the BCF of HCB in oligochaete worms was 3,120 when calculated on a wet weight basis, with a t 1/2 of 27 days. owever, in Oliver's study the worms were buried in the contaminated sediment and the BCF calculated using the interstitial water concentration. s a portion of the HCB body burden was likely due to the ingestion of particulates, the reported BCF value may be in error.