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以青岛石老人海水浴场海水为对象,通过GC-MS分析方法和加油模拟实验,研究了海水本底油指纹特征参数变化和加油效应,分析比对了特征参数比值的适用情况和合理选择。结果表明:青岛石老人海水浴场正构烷烃含量范围为0.01～0.26μg/L,多环芳烃含量范围为1.71～96.7 ng/L,烷基化多环芳烃C1-N,C2-N,C3-N,C1-P的相对含量分别为52%,27%,15%和6%;海水本底特征参数比值的性质、本底与油品中特征参数比值的差距、海水中溶解油量的不同,都会降低特征比值的准确度和精密度,甚至产生误差,造成误判。溢油鉴定过程中选择本底中不存在的特征参数,或者油源中不存在的特征参数来缩小油源范围,提高准确度。
Taking the seawater of Shilao Bathing Beach in Qingdao as an example, the GC-MS analysis and simulation experiments were conducted to study the change of oil fingerprinting parameters and the oiling effect. The application and reasonable selection of the ratio of characteristic parameters were analyzed and compared. The results showed that the content of n-paraffin in Shilaorenhai Beach in Qingdao ranged from 0.01 to 0.26μg / L, the PAHs ranged from 1.71 to 96.7 ng / L, the alkylated PAHs C1-N, C2-N and C3- The relative contents of N and C1-P were 52%, 27%, 15% and 6% respectively. The nature of the ratio of the characteristic parameters of the seawater background, the difference between the background and the ratio of the characteristic parameters in the oil, , Will reduce the accuracy and precision of feature ratio, and even produce errors, resulting in miscarriage of justice. Select the characteristic parameters that do not exist in the background during oil spill appraisal or the characteristic parameters that do not exist in the oil source to narrow the oil source range and improve the accuracy.