Jacobs L W, Chou S F, Tiedje J M
Environ Health Perspect. 1978 Apr;23:1-8. doi: 10.1289/ehp.78231.
Soil samples were collected from 28 fields which had received manure from Michigan's most highly contaminated dairy herds. The number of fields in each concentration range of PBB in soil were: 2, not detectable; 15, 0.0 to 8.0 ppb; 6, 14-102 ppb, and 5, 153 to 371 ppb. Plant tissue sampled from the 10 most highly contaminated fields contained no detectable PBB. No evidence of significant degradation of PBB was noted after 1 year incubation in soil. When 14C hexabromobiphenyl and heptabromobiphenyl isomers were incubated in soil less than 0.2% of the 14C was volatilized. Also gas chromatographic analysis of soil extracts showed no difference in recovery of the six major PBB isomers between sterilized and nonsterilized soil. Analysis of these extracts by thin layer chromatography and autoradiography showed no 14C-PBB intermediates. Photodegradation products of the major hexa- and heptabromobiphenyl isomers showed more but still minor (approximately 3%) biodegradation in soil. Much of the photodegradation products appeared bound to soil, since these products could not be extracted from soil. Photodegradation does not appear to be a significant fate of PBB in manures spread on fields since no change was noted in the relative concentrations of isomers in soil samples from our field survey. Studies with distilled, tap, river, and soil waters showed that PBB solubility was markedly influenced by water composition.
从密歇根州污染最严重的奶牛场施用了粪肥的28块田地采集了土壤样本。土壤中多溴联苯各浓度范围内的田地数量分别为：2块，检测不到；15块，0.0至8.0 ppb；6块，14 - 102 ppb；5块，153至371 ppb。从10块污染最严重的田地采集的植物组织中未检测到多溴联苯。在土壤中培养1年后，未发现多溴联苯有明显降解的迹象。当14C六溴联苯和七溴联苯异构体在土壤中培养时，挥发的14C不到0.2%。此外，土壤提取物的气相色谱分析表明，灭菌土壤和未灭菌土壤中六种主要多溴联苯异构体的回收率没有差异。通过薄层色谱和放射自显影对这些提取物进行分析，未发现14C - 多溴联苯中间体。主要的六溴和七溴联苯异构体的光降解产物在土壤中显示出更多但仍然较少（约3%）的生物降解。许多光降解产物似乎与土壤结合，因为这些产物无法从土壤中提取出来。由于在我们的田间调查中土壤样本中异构体的相对浓度没有变化，光降解似乎不是施用于田间的粪肥中多溴联苯的主要归宿。对蒸馏水、自来水、河水和土壤水的研究表明，多溴联苯的溶解度受水的成分显著影响。
