ing water (Giblin et al., 2000a,b; Herman and Frankenberger, 1999; Miller and Logan, 2000; Wallace et al., Perchlorate (ClO 4 ) contamination of ground water and surface 1998; Kim and Logan, 2000, 2001). Factors that affect the water is a widespread problem, particularly in the western United States. This study examined the effect of biodegradation on perchlofate and transport of perchlorate in...

In 1997, low-level perchlorate contamination (<50 ng mL–1 or parts per billion) was discovered in the western U.S. Since that time, it has been found in sites scattered around the nation. Although the Environmental Protection Agency has not established a regulation for perchlorate in drinking water, it has placed perchlorate on the contaminant candidate list (CCL) and the unregulated contaminan...

The asymmetric unit of the title complex, [Fe(C(5)H(5))(C(9)H(15)N)]ClO(4), contains one discrete (ferrocenylmeth-yl)trimethyl-ammonium cation and one perchlorate anion. The anion is disordered over two sets of sites, with refined occupancies of 0.776 (8) and 0.224 (8). The distances from the Fe atom to the centroids of the unsubstituted and substituted cyclo-penta-dienyl (Cp) rings are 1.650 (...

The reaction of 4-bromo-3-methyl-anilinium perchlorate and 18-crown-6 in methanol solution yielded the title compound, C(7)H(9)BrN(+)·ClO(4) (-)·C(12)H(24)O(6). The protonated 4-bromo-3-methyl-amine unit contains one -NH(3) (+) substituent, resulting in a 1:1 supra-molecular rotator-stator structure, (C(7)H(9)Br-NH(3) (+))(18-crown-6), through three bifurcated N-H⋯(O,O) hydrogen bonds between t...