Petroleum hydrocarbons, Kandelia candel, Fuel oil, UCM, Alkane, Hong Kong, Rhizophoraceae - drug effects, Terpenes - analysis, Rhizophoraceae - growth & development, Diterpenes - analysis, Analysis of Variance, Geologic Sediments - analysis, Petroleum - toxicity, Environmental Monitoring - statistics & numerical data, Environmental Pollutants - toxicity, Pet...