Soil-sebum partition coefficients for high molecular weight polycyclic aromatic hydrocarbons (HMW-PAH).

Soil-sebum partition coefficients for high molecular weight polycyclic aromatic hydrocarbons (HMW-PAH).
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高分子量多环芳烃 (HMW-PAH) 的土壤-皮脂分配系数。

DOI:
10.1016/j.jhazmat.2020.122633
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发表时间:
2020
影响因子:
13.6
通讯作者:
Beriro DJ
Beriro DJ
中科院分区:
环境科学与生态学1区
文献类型:
--
作者:
Beriro DJ

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在体外测定了12个英国天然气厂土壤中高分子量多环芳烃(HMW-PAH)的土壤-皮脂分配系数(KSS)。土壤中∑16美国环保局多环芳烃的浓度范围为51至1440毫克/千克。在皮肤温度(32 °C)下,对两个样品进行从皮脂到土壤的HMW-PAH的时间序列提取(0.5、1、2、4、8和24 h),以确定最大释放时间步长。最大HMW-PAH释放时间步长确定为4 h,随后将其用作剩余样品的提取时间。所有样本的4 h浸提显示HMW-PAH KSS范围为0.06 - 1.4(中位数= 0.59;平均值= 0.59;标准差= 0.27;绝对偏差中位数= 0.29)。4小时提取物的KSS数据的评价表明,土壤类型和选定的HMW-PAH属性(文献为基础的分子量和辛醇-碳分配系数)影响的量HMW-PAH从土壤中释放到皮脂。
In vitrohigh molecular weight polycyclic aromatic hydrocarbons (HMW-PAH) soil-sebum partition coefficients (KSS) were measured for twelve soils collected from former UK gasworks. Concentrations of ∑16 USEPA PAH in the soils ranged from 51 to 1440 mg/kg. Time series extractions (0.5, 1, 2, 4, 8 and 24 h) at skin temperature (32 °C) of HMW-PAH from sebum to soil for two samples were conducted to determine the maximum release time-step. The maximum HMW-PAH release time-step was determined as 4 h, which was subsequently used as the extraction time for the remaining samples. The 4 h extraction for all samples showed HMW-PAH KSSranging from 0.06 to 1.4 (median = 0.59; mean = 0.59; standard deviation = 0.27; median absolute deviation = 0.29). Evaluation of KSSdata for the 4 h extractions showed that soil type and selected HMW-PAH properties (literature based molecular weight and octanol-carbon partition coefficients) affect the amount of HMW-PAH released from soil into sebum.
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