Department of Life Sciences, Maharaja Krishnakumarsinhji Bhavnagar University, Bhavnagar, Gujarat, 364001, India.
Environ Geochem Health. 2018 Apr;40(2):653-665. doi: 10.1007/s10653-017-0011-x. Epub 2017 Aug 11.
A comprehensive investigation was conducted in order to assess the levels of PAHs, their input prediction and potential risks to bacterial abundance and human health along Gujarat coastline. A total of 40 sediment samples were collected at quarterly intervals within a year from two contaminated sites-Alang-Sosiya Shipbreaking Yard (ASSBRY) and Navlakhi Port (NAV), situated at Gulf of Khambhat and Gulf of Kutch, respectively. The concentration of ΣPAHs ranged from 408.00 to 54240.45 ng g dw, indicating heavy pollution of PAHs at both the contaminated sites. Furthermore, isomeric ratios and principal component analysis have revealed that inputs of PAHs at both contaminated sites were mixed-pyrogenic and petrogenic. Pearson co-relation test and regression analysis have disclosed Nap, Acel and Phe as major predictors for bacterial abundance at both contaminated sites. Significantly, cancer risk assessment of the PAHs has been exercised based on incremental lifetime cancer risks. Overall, index of cancer risk of PAHs for ASSBRY and NAV ranged from 4.11 × 10-2.11 × 10 and 9.08 × 10-4.50 × 10 indicating higher cancer risk at NAV compared to ASSBRY. The present findings provide baseline information that may help in developing advanced bioremediation and bioleaching strategies to minimize biological risk.
为了评估古吉拉特邦沿海地区多环芳烃的水平、其输入预测以及对细菌丰度和人类健康的潜在风险，进行了全面调查。在一年中，每隔一个季度从两个污染地点——阿兰格-索西亚船坞（ASSBRY）和纳瓦拉基港（NAV）收集了总共 40 个沉积物样本。ΣPAHs 的浓度范围为 408.00 至 54240.45ng g dw，表明这两个污染地点的多环芳烃污染严重。此外，同系物比值和主成分分析表明，这两个污染地点的多环芳烃输入既有混合热解源又有石油源。皮尔逊相关检验和回归分析表明，Nap、Acel 和 Phe 是这两个污染地点细菌丰度的主要预测因子。重要的是，根据增量终生癌症风险，对多环芳烃的癌症风险评估进行了评估。总体而言，ASSBRY 和 NAV 的多环芳烃癌症风险指数范围分别为 4.11×10-2至 1.1×10和 9.08×10-4至 4.50×10，表明 NAV 的癌症风险高于 ASSBRY。本研究结果提供了基线信息，可能有助于开发先进的生物修复和生物浸出策略，以最小化生物风险。
