School of the Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China.
Environ Pollut. 2012 Nov;170:183-9. doi: 10.1016/j.envpol.2012.07.011. Epub 2012 Jul 24.
Sixteen soil samples were collected from the central Tibetan Plateau (CTP). The soil concentrations of polybrominated diphenyl ethers (PBDEs) in CTP were analyzed. The detected 42 congeners were divided into light, intermediate and heavy fractions. In addition to the various minerals, other soil properties were also characterized, including the content of soil organic carbon (SOC) and the particle size distribution. The clay content is positively related to the intermediate fraction of the PBDEs and negatively related to the light and heavy fractions. Similar correlations were observed for SOC and the fine-particle fraction (size < 2 μm). The coefficient of determination (r(2)) associated with a linear regression indicated that the clays were more highly correlated with the fractional pattern of the PBDEs than with the other properties, such as SOC and the fine-particle fraction. The values of r(2) between clays and three fractions of PBDEs are 0.70, 0.69 and 0.58.
从青藏高原中部采集了 16 个土壤样本。分析了青藏高原土壤中多溴二苯醚（PBDEs）的浓度。检测到的 42 种同系物被分为轻、中、重馏分。除了各种矿物质外，还对其他土壤特性进行了表征，包括土壤有机碳（SOC）含量和颗粒大小分布。粘土含量与 PBDEs 的中间馏分呈正相关，与轻馏分和重馏分呈负相关。SOC 和细颗粒（<2 μm 大小）也观察到类似的相关性。线性回归的决定系数（r(2)）表明，粘土与 PBDEs 的馏分模式相关性更高，而与 SOC 和细颗粒等其他特性的相关性较低。粘土与 PBDEs 的三个馏分之间的 r(2) 值分别为 0.70、0.69 和 0.58。
