Škrbić Biljana D, Đurišić-Mladenović Nataša, Tadić Đorđe J, Cvejanov Jelena Đ
University of Novi Sad, Faculty of Technology, Bulevar cara Lazara 1, Novi Sad, 21000, Serbia.
Environ Sci Pollut Res Int. 2017 Jul;24(19):16148-16159. doi: 10.1007/s11356-017-9194-z. Epub 2017 May 24.
Contents of 16 polycyclic aromatic hydrocarbons were analyzed in 30 soil samples from 15 locations in Novi Sad, Serbia, assessing for the first time the corresponding health risks in the Serbian urban zone. Total concentrations were in the range of 22-2247 μg kg, with a mean and median value of 363 and 200 μg kg, respectively. Comparison with the relevant maximum allowed contents proposed by the Serbian government and with the Dutch target values implied that soils from the urban area of Novi Sad were "suitable as residential soils" and that no intervention would be needed if the current levels were retained. Seven diagnostic ratios were calculated, indicating the pyrogenic sources of PAHs as the dominant. Cancer risks in humans via accidental ingestion, inhalation of soil particles, and dermal contact with soil were estimated. Cancer risk for soil ingestion by children was the highest. The total lifetime carcinogenic risk as sum of individual cancer risks for seven carcinogenic polycyclic aromatic hydrocarbons was within the range 10 to 10, indicating acceptable risks at 30 and 47% of sites for children and adults, respectively. However, for the rest of the samples, total lifetime cancer risk was >10 indicating over the acceptable risk, even though the contents in soil were not of concern as the comparison with the environmental guidance previously showed. This could be explained by (a) the dominant concentrations of higher molecular weight compounds with 4 to 6 rings, among which there are compounds with higher toxicity equivalents, but also with (b) the extreme conditions used for the conservative risk assessment under maximal exposure frequency, exposure time, and ingestion rates.
对塞尔维亚诺维萨德15个地点的30份土壤样本中的16种多环芳烃含量进行了分析，首次评估了塞尔维亚城市地区相应的健康风险。总浓度范围为22 - 2247μg/kg，平均值和中值分别为363和200μg/kg。与塞尔维亚政府提出的相关最大允许含量以及荷兰目标值进行比较表明，诺维萨德市区的土壤“适合作为居住土壤”，如果保持当前水平则无需干预。计算了七个诊断比率，表明多环芳烃的热解源占主导地位。估计了人类通过意外摄入、吸入土壤颗粒以及皮肤接触土壤而产生的癌症风险。儿童因摄入土壤而产生的癌症风险最高。七种致癌多环芳烃的个体癌症风险总和即终生致癌总风险在10至10范围内，分别表明儿童和成人在30%和47%的地点风险可接受。然而，对于其余样本，终生癌症总风险>10，表明风险超过可接受水平，尽管如先前与环境指南比较所示土壤中的含量并无问题。这可以通过以下两点来解释：(a) 具有4至6个环的较高分子量化合物占主导浓度，其中存在毒性当量较高的化合物，同时(b) 在最大暴露频率、暴露时间和摄入率下进行保守风险评估所采用的极端条件。
