Health risk assessment modeling of the oil spill emissions (due to airborne particulate matter)

The aim of this study was to estimate the dose of nanoparticles delivered to the human respiratory system when aerosolized from seawater polluted by a crude oil slick (with and without dispersant). The seawater is subject to pilot-scale breaking waves. The seawater is contaminated with slicks of crude oil only or slicks of crude oil and dispersant (Corexit 9500A) mixture. The dispersant to oil ratio (DOR) is 1:25. All calculations presented in the dataset are related to one breathing cycle. Emission measurements were obtained from a horizontal breaking wave simulator for the slick thickness of 0.5 mm. A scanning mobility particle sizer, SMPS model 3938 (TSI Inc.), with an electrostatic classifier model 3082 and a condensation particle counter model 3787 was used to detect sub-micron particles. An impactor with an orifice diameter of 0.071 cm installed at the inlet of the classifier removes super-micron particles. This system measures particles with electrical mobility-driven diameters ranging from 10 to 400 nm. The dose estimation of the deposited PM in different regions of the human respiratory system was facilitated using the multiple path particle dosimetry model (MPPD Ver. 3.04), which is originally developed by Applied Research Associates Inc., Raleigh, NC, USA.本研究旨在估算经受原油浮油（添加与未添加分散剂）污染的海水雾化后，输送至人体呼吸系统的纳米颗粒剂量。实验所用海水处于中试规模破波环境中。该海水仅受原油浮油污染，或受原油浮油与分散剂（Corexit 9500A）混合体系污染。分散剂与油的质量比（Dispersant to Oil Ratio, DOR）为1:25。本数据集收录的所有计算均以单次呼吸周期为基准。针对浮油厚度为0.5 mm的工况，通过水平破波模拟器获取了排放特性测量数据。采用型号为3938的扫描迁移率粒径谱仪（Scanning Mobility Particle Sizer, SMPS，TSI公司生产），搭配型号3082的静电分级器与型号3787的冷凝粒子计数器，用于检测亚微米级颗粒。在分级器入口处安装孔径为0.071 cm的撞击器，可去除超微米级颗粒。该系统可测量以电学迁移率表征、粒径范围为10 nm至400 nm的颗粒。借助由美国北卡罗来纳州罗利市应用研究联合公司（Applied Research Associates Inc.）研发的多路径粒子剂量学模型（Multiple Path Particle Dosimetry Model, MPPD 版本3.04），可完成人体呼吸系统不同区域沉积颗粒物（Particulate Matter, PM）的剂量估算。