title: Environmental risk assessment on capsaicin used as active substance for antifouling system on ships.
abstract: Biodegradation experiments were carried out with capsaicin to evaluate its degradability. The results show that capsaicin was readily biodegradable under aerobic conditions. The values of Kow and the calculated bioconcentration factor indicate that capsaicin have a low potential for bioconcentration. The fish acute toxicity tests conducted with Brachydanio rerio show LC50 for capsaicin was 5.98 mg L(-1). The tests of alga growth inhibition conducted with Selenastrum capricornutum suggest EC50 for capsaicin was 114 mg L(-1). The calculated PNEC (Predicted No Effect Concentration) was 4.9×10(-4) mg L(-1). The average PEC (Predicted Environmental Concentration) for OECD-EU commercial harbor and marina were 3.99×10(-6) and 2.49×10(-5) mg L(-1), respectively. These indicate that the PEC was much less than the PNEC for capsaicin. The low Kp value of capsaicin suggests the data about the risk of capsaicin to sediment organisms can be waived. According to the results from the analysis of the degradation, bioaccumulation, toxicity and accumulation in sediment, it can be concluded that capsaicin used as active substance for antifouling system on ships poses relatively low risk to marine environment.
authors.affiliation: School of Chemical and Environmental Engineering, Beijing Campus, China University of Mining and Technology, Beijing 100083, China. Electronic address: wang-jb03@mails.tsinghua.edu.cn.
authors.forename: Jianbing
authors.initials: J
authors.lastname: Wang
authors.affiliation: School of Chemical and Environmental Engineering, Beijing Campus, China University of Mining and Technology, Beijing 100083, China. Electronic address: ycl199001@163.com.
authors.forename: Ting
authors.initials: T
authors.lastname: Shi
authors.affiliation: Chinese Ecological Civilization Research and Promotion Association, Beijing 100035, China; Foreign Economic Cooperation Office China State Environmental Protection Administration, Beijing 100035, China. Electronic address: wangjb@cumtb.edu.cn.
authors.forename: Xiaoling
authors.initials: X
authors.lastname: Yang
authors.affiliation: Chinese Ecological Civilization Research and Promotion Association, Beijing 100035, China; Foreign Economic Cooperation Office China State Environmental Protection Administration, Beijing 100035, China. Electronic address: han.wenya@mepfeco.org.cn.
authors.forename: Wenya
authors.initials: W
authors.lastname: Han
authors.affiliation: Foreign Economic Cooperation Office China State Environmental Protection Administration, Beijing 100035, China. Electronic address: joe.yunrui@gmail.com.
authors.forename: Yunrui
authors.initials: Y
authors.lastname: Zhou
mesh_terms: D000818:Animals; D001673:Biodegradation, Environmental; D002211:Capsaicin / Q000378:metabolism / Q000633:toxicity*; D000460:Chlorophyta / Q000187:drug effects* / Q000254:growth & development; D018570:Risk Assessment; D018689:Sensory System Agents / Q000378:metabolism / Q000633:toxicity*; D012767:Ships; D014874:Water Pollutants, Chemical / Q000378:metabolism / Q000633:toxicity*; D015027:Zebrafish / Q000502:physiology*
chemical_list: D018689:Sensory System Agents; D014874:Water Pollutants, Chemical; D002211:Capsaicin
keywords: Antifouling paint; Biodegradation; Capsaicin; Environmental risk assessment; Toxicity